146.0 (#447 )

Removed outdated VPN Promo & Quickactions lines (#442 )
install.py: add support for macOS (#434 )
2026-06-12 15:40:48 +05:30 · 2025-12-13 16:59:25 -05:00 · 2025-10-28 23:00:52 -04:00 · 2025-10-22 20:54:50 -04:00 · 2025-10-22 20:32:40 -04:00 · 2025-10-18 21:03:42 -04:00
11 changed files with 1056 additions and 482 deletions
@@ -1,43 +0,0 @@
---
-name: Something is not working!
-about: Use this form if you have an issue.
-title: ''
-labels: ''
-assignees: yokoffing
-
---
-
-## BEFORE YOU BEGIN
-I have attempted the following troubleshooting suggestions:
- [ ] The issue persists when using Firefox in [Troubleshoot Mode](https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode).
- [ ] Disabled DNS-level content blocking (AdGuard Home, NextDNS, Control D, RethinkDNS, PiHole, etc), [cleared my DNS cache](https://www.pcmag.com/how-to/how-to-flush-your-dns-cache), and used my ISP's DNS resolver (if applicable).
- [ ] [Cleared website data](https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox), restarted Firefox, and my issue persists.
- [ ] I have created a [new profile](https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles). The issue persists when using the current [user.js](https://github.com/yokoffing/Betterfox/blob/master/user.js) file on GitHub. (Must be in a new profile and a new user.js!)
-
-## REPORT
-**Describe the bug**
-*A clear and concise description of what the bug is.*
-
-**To Reproduce**
-*Steps to reproduce the behavior:*
-
-```
-1. Go to '...'
-2. Click on '....'
-3. Scroll down to '....'
-4. See error
-```
-
-**Expected behavior**
-*A clear and concise description of what you expected to happen.*
-
-**Screenshots**
-*If applicable, add screenshots to help explain your problem.*
-
-**Desktop (please complete the following information):**
- - OS:
- - Browser:
- - Version:
-
-**Additional context**
-*Add any other context about the problem here.*
@@ -0,0 +1,105 @@
+name: Bug Report
+description: File a bug report
+assignees: yokoffing
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+       Please confirm the issue relates to Betterfox user.js before submitting a report.
+
+        To troubleshoot your installation, try solutions below and test the issue after each step:
+        * Launch Firefox in [Troubleshoot Mode](https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode).
+        * Disable DNS-level content blocking (such ad AdGuard Home, NextDNS, Control D, PiHole, etc) and [clear the DNS cache](https://www.pcmag.com/how-to/how-to-flush-your-dns-cache) and use ISP's DNS resolver (if applicable).
+        * [Clear website data](https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox) and restart Firefox.
+        * Create a [new clean profile](https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles).
+
+  - type: checkboxes
+    attributes:
+      label: Prerequisites
+      options:
+        - label: The issue persists when using Firefox in Troubleshoot Mode.
+          required: true
+        - label: "The issue persists after I disabled DNS-level content blocking (PiHole, NextDNS, etc.), cleared DNS cache, and tried to use ISP's DNS resolver (if applicable)."
+          required: true
+        - label: The issue persists after I cleared website data and restarted Firefox.
+          required: true
+        - label: I have created a new, clean profile. The issue persists after adding the user.js, but it is not reproducible in a new, unedited Firefox profile.
+          required: true
+
+  - type: textarea
+    attributes:
+      label: Bug description
+      description: Describe the issue.
+      placeholder: A bug causes this and that...
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Steps to reproduce
+      description: Explain the steps required to reproduce the issue.
+      placeholder: |
+        1. Go to `...`
+        2. Click on `...`
+        3. Scroll down to `...`
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Expected behavior
+      description: What did you expect to happen instead?
+      placeholder: Firefox should do [this]. Instead, it did [that].
+    validations:
+      required: false
+
+  - type: textarea
+    attributes:
+      label: Screenshots
+      description: Add screenshots to help explain your problem (optional).
+    validations:
+      required: false
+
+  - type: dropdown
+    attributes:
+      label: Operating System (OS)
+      options:
+        - Windows (10 or later)
+        - macOS (ARM-based device)
+        - macOS (Intel-based device)
+        - Linux
+        - Other
+    validations:
+      required: true
+
+  - type: dropdown
+    attributes:
+      label: Browser
+      options:
+        - Firefox
+        - Firefox Beta
+        - Firefox Developer Edition
+        - Firefox Nightly
+        - Firefox ESR
+        - Floorp
+        - LibreWolf
+        - Zen Browser
+        - Waterfox
+        - Other
+    validations:
+      required: true
+
+  - type: input
+    attributes:
+      label: Version
+      placeholder: 136 stable
+    validations:
+      required: false
+
+  - type: textarea
+    attributes:
+      label: Additional information
+      description: Include any other information that may be helpful.
+    validations:
+      required: false
@@ -3,7 +3,7 @@
 * Fastfox                                                                              *
 * "Non ducor duco"                                                                     *
 * priority: speedy browsing                                                            *
- * version: 129                                                                         *
+ * version: 146                                                                         *
 * url: https://github.com/yokoffing/Betterfox                                          *
 ***************************************************************************************/

@@ -22,6 +22,12 @@
 //user_pref("nglayout.initialpaint.delay", 5); // DEFAULT; formerly 250
    //user_pref("nglayout.initialpaint.delay_in_oopif", 5); // DEFAULT

+// PREF: Font rendering cache in Skia (32MB)
+// Increases font cache size to improve performance on text-heavy websites.
+// Especially beneficial for sites with many font faces or complex typography.
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1239151#c2
+user_pref("gfx.content.skia-font-cache-size", 32); // 32 MB; default=5; Chrome=20
+
 // PREF: page reflow timer
 // Rather than wait until a page has completely downloaded to display it to the user,
 // web browsers will periodically render what has been received to that point.
@@ -33,7 +39,7 @@
 // false = reflow pages whenever new data is received
 //user_pref("content.notify.ontimer", true); // DEFAULT

-// PREF: notification interval (in microseconds) to avoid layout thrashing
+// PREF: content notification delay - notification interval (in microseconds) to avoid layout thrashing
 // When Firefox is loading a page, it periodically reformats
 // or "reflows" the page as it loads. The page displays new elements
 // every 0.12 seconds by default. These redraws increase the total page load time.
@@ -45,9 +51,18 @@
 // to impact page load performance.
 // [EXAMPLE] 100000 = .10s = 100 reflows/second
 // [1] https://searchfox.org/mozilla-central/rev/c1180ea13e73eb985a49b15c0d90e977a1aa919c/modules/libpref/init/StaticPrefList.yaml#1824-1834
-// [2] https://dev.opera.com/articles/efficient-javascript/?page=3#reflow
-// [3] https://dev.opera.com/articles/efficient-javascript/?page=3#smoothspeed
-user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
+// [2] https://web.archive.org/web/20240115073722/https://dev.opera.com/articles/efficient-javascript/?page=3#reflow
+// [3] https://web.archive.org/web/20240115073722/https://dev.opera.com/articles/efficient-javascript/?page=3#smoothspeed
+//user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
+//user_pref("content.max.tokenizing.time", 1000000); // (1.00s); alt=2000000; HIDDEN
+//user_pref("content.interrupt.parsing", true); // HIDDEN
+
+// PREF: UI responsiveness threshold
+//user_pref("content.switch.threshold", 300000); // HIDDEN; default= 750000; alt=500000
+
+// PREF: split text nodes to a length
+// The number of bytes in a text node.
+//user_pref("content.maxtextrun", 8191); // DEFAULT; HIDDEN

 // PREF: new tab preload
 // [WARNING] Disabling this may cause a delay when opening a new tab in Firefox.
@@ -78,6 +93,15 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // PREF: lazy load iframes
 //user_pref("dom.iframe_lazy_loading.enabled", true); // DEFAULT [FF121+]

+// PREF: Prioritized Task Scheduling API 
+// [1] https://github.com/yokoffing/Betterfox/issues/355
+// [2] https://blog.mozilla.org/performance/2022/06/02/prioritized-task-scheduling-api-is-prototyped-in-nightly/
+// [3] https://medium.com/airbnb-engineering/building-a-faster-web-experience-with-the-posttask-scheduler-276b83454e91
+// [4] https://github.com/WICG/scheduling-apis/blob/main/explainers/prioritized-post-task.md
+// [5] https://wicg.github.io/scheduling-apis/
+// [6] https://caniuse.com/mdn-api_taskcontroller
+//user_pref("dom.enable_web_task_scheduling", true); // DEFAULT [FF142+]
+
 /****************************************************************************
 * SECTION: GFX RENDERING TWEAKS                                            *
 ****************************************************************************/
@@ -93,24 +117,38 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 //user_pref("gfx.webrender.compositor", true); // DEFAULT WINDOWS macOS
    //user_pref("gfx.webrender.compositor.force-enabled", true); // enforce

+// PREF: Webrender layer compositor
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1945683
+// [2] https://www.reddit.com/r/firefox/comments/1p58qre/firefox_is_getting_ready_to_make_youtube_fast/
+// [3] https://www.ghacks.net/2025/11/24/these-two-tweaks-should-improve-firefoxs-performance-on-youtube-significantly/
+user_pref("gfx.webrender.layer-compositor", true);
+    // If your PC uses an AMD GPU, you might want to make a second change.
+    // This one improves CPU usage on AMD systems.
+    //user_pref("media.wmf.zero-copy-nv12-textures-force-enabled", true);
+
 // PREF: if your hardware doesn't support Webrender, you can fallback to Webrender's software renderer
 // [1] https://www.ghacks.net/2020/12/14/how-to-find-out-if-webrender-is-enabled-in-firefox-and-how-to-enable-it-if-it-is-not/
 //user_pref("gfx.webrender.software", true); // Software Webrender uses CPU instead of GPU
    //user_pref("gfx.webrender.software.opengl", true); // LINUX

 // PREF: GPU-accelerated Canvas2D
-// Use gpu-canvas instead of to skia-canvas.
+// Uses Accelerated Canvas2D for hardware acceleration of Canvas2D.
+// This provides a consistent acceleration architecture across all platforms
+// by utilizing WebGL instead of relying upon Direct2D.
 // [WARNING] May cause issues on some Windows machines using integrated GPUs [2] [3]
 // Add to your overrides if you have a dedicated GPU.
 // [NOTE] Higher values will use more memory.
 // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1741501
 // [2] https://github.com/yokoffing/Betterfox/issues/153
 // [3] https://github.com/yokoffing/Betterfox/issues/198
-//user_pref("gfx.canvas.accelerated", true); // DEFAULT macOS LINUX [FF110]; not compatible with WINDOWS integrated GPUs
-    user_pref("gfx.canvas.accelerated.cache-items", 4096); // default=2048; Chrome=4096
-    user_pref("gfx.canvas.accelerated.cache-size", 512); // default=256; Chrome=512
-    user_pref("gfx.content.skia-font-cache-size", 20); // default=5; Chrome=20
-    // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1239151#c2
+//user_pref("gfx.canvas.accelerated", true); // [DEFAULT FF133+]
+user_pref("gfx.canvas.accelerated.cache-items", 32768); // [default=8192 FF135+]; Chrome=4096
+user_pref("gfx.canvas.accelerated.cache-size", 4096); // default=256; Chrome=512
+//user_pref("gfx.canvas.max-size", 32767); // DEFAULT=32767
+
+// PREF: WebGL
+user_pref("webgl.max-size", 16384); // default=1024
+//user_pref("webgl.force-enabled", true);

 // PREF: prefer GPU over CPU
 // At best, the prefs do nothing on Linux/macOS.
@@ -142,7 +180,7 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // More efficient to keep the browser cache instead of having to
 // re-download objects for the websites you visit frequently.
 // [1] https://www.janbambas.cz/new-firefox-http-cache-enabled/
-//user_pref("browser.cache.disk.enable", true); // DEFAULT
+user_pref("browser.cache.disk.enable", false);

 // PREF: disk cache size
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=913808,968106,968101
@@ -177,7 +215,7 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // for recently read cache entries [1]. It is managed by a cache thread, and caches with
 // metadata in the pool appear to be reused immediately.
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=986179
-//user_pref("browser.cache.disk.metadata_memory_limit", 500); // default=250 (0.25 MB); limit of recent metadata we keep in memory for faster access
+//user_pref("browser.cache.disk.metadata_memory_limit", 16384); // default=250 (0.25 MB); limit of recent metadata we keep in memory for faster access

 // PREF: number of chunks we preload ahead of read
 // Large content such as images will load faster.
@@ -208,8 +246,9 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 //user_pref("browser.cache.disk.max_priority_chunks_memory_usage", 40960); // DEFAULT (40 MB)

 // PREF: how often to validate document in cache
-// [1] https://searchfox.org/mozilla-release/source/modules/libpref/init/StaticPrefList.yaml#1092-1096
 // 0 = once-per-session
+// 1 = each-time
+// 2 = never
 // 3 = when-appropriate/automatically (default)
 //user_pref("browser.cache.check_doc_frequency", 3); // DEFAULT

@@ -228,7 +267,7 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // 0 = do not compress (default)
 // 1 = minimal compression
 // 9 = maximal compression
-user_pref("browser.cache.jsbc_compression_level", 3);
+//user_pref("browser.cache.jsbc_compression_level", 3);

 // PREF: strategy to use for when the bytecode should be encoded and saved [TESTING ONLY]
 // -1 makes page load times marginally longer when a page is being loaded for the first time, while
@@ -251,13 +290,14 @@ user_pref("browser.cache.jsbc_compression_level", 3);
 // that only contains settings for systems at or below 8GB of system memory [1].
 // Waterfox G6 allows it to go above 8GB machines [3].
 // Value can be up to the max size of an unsigned 64-bit integer.
-// -1=Automatically decide the maximum memory to use to cache decoded images,
+// -1 = Automatically decide the maximum memory to use to cache decoded images,
 // messages, and chrome based on the total amount of RAM
+// For machines with 8GB+ RAM, that equals 32768 kb = 32 MB
 // [1] https://kb.mozillazine.org/Browser.cache.memory.capacity#-1
 // [2] https://searchfox.org/mozilla-central/source/netwerk/cache2/CacheObserver.cpp#94-125
 // [3] https://github.com/WaterfoxCo/Waterfox/commit/3fed16932c80a2f6b37d126fe10aed66c7f1c214
-//user_pref("browser.cache.memory.capacity", -1); // DEFAULT; 256000=256 MB; 512000=500 MB; 1048576=1GB, 2097152=2GB
-//user_pref("browser.cache.memory.max_entry_size", 10240); // (10 MB); default=5120 (5 MB)
+user_pref("browser.cache.memory.capacity", 131072); // 128 MB RAM cache; alt=65536 (65 MB RAM cache); default=32768
+user_pref("browser.cache.memory.max_entry_size", 20480); // 20 MB max entry; default=5120 (5 MB)

 // PREF: amount of Back/Forward cached pages stored in memory for each tab
 // Pages that were recently visited are stored in memory in such a way
@@ -268,7 +308,15 @@ user_pref("browser.cache.jsbc_compression_level", 3);
 // is no reason for Firefox to keep memory for this.
 // -1=determine automatically (8 pages)
 // [1] https://kb.mozillazine.org/Browser.sessionhistory.max_total_viewers#Possible_values_and_their_effects
-//user_pref("browser.sessionhistory.max_total_viewers", 4);
+user_pref("browser.sessionhistory.max_total_viewers", 4); // default=8
+user_pref("browser.sessionstore.max_tabs_undo", 10); // default=25
+//user_pref("browser.sessionstore.max_entries", 10); // [HIDDEN OR REMOVED]
+//user_pref("dom.storage.default_quota", 20480); // 20MB; default=5120
+//user_pref("dom.storage.shadow_writes", true);
+
+// PREF: tell garbage collector to start running when javascript is using xx MB of memory
+// Garbage collection releases memory back to the system.
+//user_pref("javascript.options.mem.high_water_mark", 128); // DEFAULT [HIDDEN OR REMOVED]

 /****************************************************************************
 * SECTION: MEDIA CACHE                                                     *
@@ -279,9 +327,11 @@ user_pref("browser.cache.jsbc_compression_level", 3);

 // PREF: media memory cache
 // [1] https://hg.mozilla.org/mozilla-central/file/tip/modules/libpref/init/StaticPrefList.yaml#l9652
-// [2] https://github.com/arkenfox/user.js/pull/941
-user_pref("media.memory_cache_max_size", 65536); // default=8192; AF=65536; alt=131072
-//user_pref("media.memory_caches_combined_limit_kb", 524288); // DEFAULT; alt=1048576
+// [2] https://github.com/arkenfox/user.js/pull/941#issuecomment-668278121
+user_pref("media.memory_cache_max_size", 262144); // 256 MB; default=8192; AF=65536
+
+// PREF: media cache combine sizes
+user_pref("media.memory_caches_combined_limit_kb", 1048576); // 1GB; default=524288
 //user_pref("media.memory_caches_combined_limit_pc_sysmem", 5); // DEFAULT; alt=10; the percentage of system memory that Firefox can use for media caches

 // PREF: Media Source Extensions (MSE) web standard
@@ -295,19 +345,20 @@ user_pref("media.memory_cache_max_size", 65536); // default=8192; AF=65536; alt=
 // PREF: adjust video buffering periods when not using MSE (in seconds)
 // [NOTE] Does not affect videos over 720p since they use DASH playback [1]
 // [1] https://lifehacker.com/preload-entire-youtube-videos-by-disabling-dash-playbac-1186454034
-user_pref("media.cache_readahead_limit", 7200); // 120 min; default=60; stop reading ahead when our buffered data is this many seconds ahead of the current playback
-user_pref("media.cache_resume_threshold", 3600); // 60 min; default=30; when a network connection is suspended, don't resume it until the amount of buffered data falls below this threshold
+user_pref("media.cache_readahead_limit", 600); // 10 min; default=60; stop reading ahead when our buffered data is this many seconds ahead of the current playback
+user_pref("media.cache_resume_threshold", 300); // 5 min; default=30; when a network connection is suspended, don't resume it until the amount of buffered data falls below this threshold

 /****************************************************************************
 * SECTION: IMAGE CACHE                                                     *
 ****************************************************************************/

 // PREF: image cache
-//user_pref("image.cache.size", 5242880); // DEFAULT; in MiB; alt=10485760 (cache images up to 10MiB in size)
-user_pref("image.mem.decode_bytes_at_a_time", 32768); // default=16384; alt=65536; chunk size for calls to the image decoders
+user_pref("image.cache.size", 10485760); // (cache images up to 10MiB in size) [DEFAULT 5242880]
+user_pref("image.mem.decode_bytes_at_a_time", 65536); // default=16384; alt=32768; chunk size for calls to the image decoders
+//user_pref("image.mem.max_decoded_image_kb", 512000); // 500MB [HIDDEN OR REMOVED?]

 // PREF: set minimum timeout to unmap shared surfaces since they have been last used
-// This is only used on 32-bit builds of Firefox where there is meaningful
+// [NOTE] This is only used on 32-bit builds of Firefox where there is meaningful
 // virtual address space pressure.
 // [1] https://phabricator.services.mozilla.com/D109440
 // [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1699224
@@ -318,13 +369,14 @@ user_pref("image.mem.decode_bytes_at_a_time", 32768); // default=16384; alt=6553
 ****************************************************************************/

 // PREF: use bigger packets
-// [WARNING] Cannot open HTML files bigger than 4MB if changed [2].
+// [WARNING] Cannot open HTML files bigger than 4MB if value is too large [2].
 // Reduce Firefox's CPU usage by requiring fewer application-to-driver data transfers.
 // However, it does not affect the actual packet sizes transmitted over the network.
 // [1] https://www.mail-archive.com/support-seamonkey@lists.mozilla.org/msg74561.html
 // [2] https://github.com/yokoffing/Betterfox/issues/279
-//user_pref("network.buffer.cache.size", 262144); // 256 kb; default=32768 (32 kb)
-//user_pref("network.buffer.cache.count", 128); // default=24
+// [3] https://ra1ahq.blog/en/optimizaciya-proizvoditelnosti-mozilla-firefox
+//user_pref("network.buffer.cache.size", 65535); // default=32768 (32 kb); 262144 too large
+//user_pref("network.buffer.cache.count", 48); // default=24; 128 too large

 // PREF: increase the absolute number of HTTP connections
 // [1] https://kb.mozillazine.org/Network.http.max-connections
@@ -334,6 +386,7 @@ user_pref("network.http.max-connections", 1800); // default=900
 user_pref("network.http.max-persistent-connections-per-server", 10); // default=6; download connections; anything above 10 is excessive
    user_pref("network.http.max-urgent-start-excessive-connections-per-host", 5); // default=3
    //user_pref("network.http.max-persistent-connections-per-proxy", 48); // default=32
+user_pref("network.http.request.max-start-delay", 5); // default=10
 //user_pref("network.websocket.max-connections", 200); // DEFAULT

 // PREF: pacing requests [FF23+]
@@ -343,21 +396,21 @@ user_pref("network.http.max-persistent-connections-per-server", 10); // default=
 // Pacing requests adds a slight delay between requests to throttle them.
 // If you have a fast machine and internet connection, disabling pacing
 // may provide a small speed boost when loading pages with lots of requests.
-// false=Firefox will send as many requests as possible without pacing
-// true=Firefox will pace requests (default)
+// false = Firefox will send as many requests as possible without pacing
+// true = Firefox will pace requests (default)
 user_pref("network.http.pacing.requests.enabled", false);
    //user_pref("network.http.pacing.requests.min-parallelism", 10); // default=6
-    //user_pref("network.http.pacing.requests.burst", 14); // default=10
+    //user_pref("network.http.pacing.requests.burst", 32); // default=10

 // PREF: increase DNS cache
 // [1] https://developer.mozilla.org/en-US/docs/Web/Performance/Understanding_latency
-//user_pref("network.dnsCacheEntries", 1000); // default=400
+user_pref("network.dnsCacheEntries", 10000); // default=800

 // PREF: adjust DNS expiration time
 // [ABOUT] about:networking#dns
 // [NOTE] These prefs will be ignored by DNS resolver if using DoH/TRR.
-user_pref("network.dnsCacheExpiration", 3600); // keep entries for 1 hour
-    //user_pref("network.dnsCacheExpirationGracePeriod", 240); // default=60; cache DNS entries for 4 minutes after they expire
+user_pref("network.dnsCacheExpiration", 3600); // keep entries for 1 hour; default=60
+    //user_pref("network.dnsCacheExpirationGracePeriod", 120); // default=60; cache DNS entries for 2 minutes after they expire

 // PREF: the number of threads for DNS
 //user_pref("network.dns.max_high_priority_threads", 40); // DEFAULT [FF 123?]
@@ -397,7 +450,7 @@ user_pref("network.ssl_tokens_cache_capacity", 10240); // default=2048; more TLS
 // [3] https://searchfox.org/mozilla-central/rev/028c68d5f32df54bca4cf96376f79e48dfafdf08/modules/libpref/init/all.js#1280-1282
 // [4] https://www.keycdn.com/blog/resource-hints#prefetch
 // [5] https://3perf.com/blog/link-rels/#prefetch
-//user_pref("network.http.speculative-parallel-limit", 20); // DEFAULT (FF127+?)
+user_pref("network.http.speculative-parallel-limit", 0);

 // PREF: DNS prefetching for HTMLLinkElement <link rel="dns-prefetch">
 // Used for cross-origin connections to provide small performance improvements.
@@ -411,7 +464,7 @@ user_pref("network.ssl_tokens_cache_capacity", 10240); // default=2048; more TLS
 user_pref("network.dns.disablePrefetch", true);
    user_pref("network.dns.disablePrefetchFromHTTPS", true); // [FF127+ false]

-// PREF:  DNS prefetch for HTMLAnchorElement (speculative DNS)
+// PREF: DNS prefetch for HTMLAnchorElement (speculative DNS)
 // Disable speculative DNS calls to prevent Firefox from resolving
 // hostnames for other domains linked on a page. This may eliminate
 // unnecessary DNS lookups, but can increase latency when following external links.
@@ -430,11 +483,11 @@ user_pref("network.dns.disablePrefetch", true);
 // [NOTE] Firefox will perform DNS lookup (if enabled) and TCP and TLS handshake,
 // but will not start sending or receiving HTTP data.
 // [1] https://www.ghacks.net/2017/07/24/disable-preloading-firefox-autocomplete-urls/
-//user_pref("browser.urlbar.speculativeConnect.enabled", false);
+user_pref("browser.urlbar.speculativeConnect.enabled", false);

 // PREF: mousedown speculative connections on bookmarks and history [FF98+]
 // Whether to warm up network connections for places:menus and places:toolbar.
-//user_pref("browser.places.speculativeConnect.enabled", false);
+user_pref("browser.places.speculativeConnect.enabled", false);

 // PREF: network module preload <link rel="modulepreload"> [FF115+]
 // High-priority loading of current page JavaScript modules.
@@ -492,18 +545,18 @@ user_pref("network.prefetch-next", false);
 // When enabled, it trains and uses Firefox's algorithm to preload page resource
 // by tracking past page resources. It uses a local file (history) of needed images,
 // scripts, etc. to request them preemptively when navigating.
-// [NOTE] By default, it only preconnects, doing DNS, TCP, and SSL handshakes.
+// [NOTE] By default, it only preconnects DNS, TCP, and SSL handshakes.
 // No data sends until clicking. With "network.predictor.enable-prefetch" enabled,
 // it also performs prefetches.
 // [1] https://wiki.mozilla.org/Privacy/Reviews/Necko
 // [2] https://www.ghacks.net/2014/05/11/seer-disable-firefox/
 // [3] https://github.com/dillbyrne/random-agent-spoofer/issues/238#issuecomment-110214518
 // [4] https://www.igvita.com/posa/high-performance-networking-in-google-chrome/#predictor
-user_pref("network.predictor.enabled", false);
+//user_pref("network.predictor.enabled", false); // [DEFAULT: false FF144+]

 // PREF: Network Predictor fetch for resources ahead of time
 // Prefetch page resources based on past user behavior.
-//user_pref("network.predictor.enable-prefetch", false); // DEFAULT
+//user_pref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false]

 // PREF: make Network Predictor active when hovering over links
 // When hovering over links, Network Predictor uses past resource history to
@@ -533,28 +586,8 @@ user_pref("network.predictor.enabled", false);

 // PREF: CSS Masonry Layout [NIGHTLY]
 // [1] https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/Masonry_Layout
-user_pref("layout.css.grid-template-masonry-value.enabled", true);
-
-// PREF: Prioritized Task Scheduling API [NIGHTLY]
-// [1] https://blog.mozilla.org/performance/2022/06/02/prioritized-task-scheduling-api-is-prototyped-in-nightly/
-// [2] https://medium.com/airbnb-engineering/building-a-faster-web-experience-with-the-posttask-scheduler-276b83454e91
-user_pref("dom.enable_web_task_scheduling", true);
-
-// PREF: HTML Sanitizer API [NIGHTLY]
-// [1] https://developer.mozilla.org/en-US/docs/Web/API/Sanitizer
-// [2] https://caniuse.com/mdn-api_sanitizer
-user_pref("dom.security.sanitizer.enabled", true);
-
-// PREF: WebGPU [HIGHLY EXPERIMENTAL!]
-// [WARNING] Do not enable unless you are a web developer!
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1746245
-// [2] https://developer.chrome.com/docs/web-platform/webgpu/
-// [3] https://github.com/gpuweb/gpuweb/wiki/Implementation-Status
-// [4] https://hacks.mozilla.org/2020/04/experimental-webgpu-in-firefox/
-//user_pref("dom.webgpu.enabled", true);
-    //user_pref("gfx.webgpu.force-enabled", true); // enforce
-// enable WebGPU indirect draws/dispatches:
-//user_pref("dom.webgpu.indirect-dispatch.enabled", true);
+// [2] https://www.smashingmagazine.com/native-css-masonry-layout-css-grid/
+//user_pref("layout.css.grid-template-masonry-value.enabled", true);

 /****************************************************************************
 * SECTION: TAB UNLOAD                                                      *
@@ -602,6 +635,7 @@ user_pref("dom.security.sanitizer.enabled", true);
 // [2] https://firefox-source-docs.mozilla.org/dom/ipc/process_model.html#web-content-processes 
 //user_pref("dom.ipc.processCount", 8); // DEFAULT; Shared Web Content
 //user_pref("dom.ipc.processCount.webIsolated", 1); // default=4; Isolated Web Content
+//user_pref("dom.ipc.keepProcessesAlive.web", 4); // default=1 [HIDDEN OR REMOVED]

 // PREF: use one process for process preallocation cache
 //user_pref("dom.ipc.processPrelaunch.fission.number", 1); // default=3; Process Preallocation Cache
@@ -3,7 +3,7 @@
 * Peskyfox                                                                 *
 * "Aquila non capit muscas"                                                *
 * priority: remove annoyances                                              *
- * version: 129                                                             *
+ * version: 146                                                             *
 * url: https://github.com/yokoffing/Betterfox                              *
 * credit: Some prefs are reproduced and adapted from the arkenfox project  *
 * credit urL: https://github.com/arkenfox/user.js                          *
@@ -13,11 +13,6 @@
 * SECTION: MOZILLA UI                                                      *
 ****************************************************************************/

-// PREF: Mozilla VPN
-// [1] https://github.com/yokoffing/Betterfox/issues/169
-user_pref("browser.privatebrowsing.vpnpromourl", "");
-    //user_pref("browser.vpn_promo.enabled", false);
-
 // PREF: disable about:addons' Recommendations pane (uses Google Analytics)
 user_pref("extensions.getAddons.showPane", false); // HIDDEN

@@ -29,14 +24,6 @@ user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);
 // [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to make personalized extension recommendations
 user_pref("browser.discovery.enabled", false);

-// PREF: disable Fakespot integration [FF116+]
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1840156#c0
-// [2] https://github.com/arkenfox/user.js/issues/1730
-// [3] https://www.fakespot.com/
-// [4] https://www.ghacks.net/2023/10/12/firefox-will-soon-tell-you-if-product-reviews-are-reliable/
-//user_pref("browser.shopping.experience2023.enabled", false); // DEFAULT
-//user_pref("browser.shopping.experience2023.ads.exposure", false); // DEFAULT [FF121+]
-
 // PREF: disable Firefox from asking to set as the default browser
 // [1] https://github.com/yokoffing/Betterfox/issues/166
 user_pref("browser.shell.checkDefaultBrowser", false);
@@ -56,7 +43,7 @@ user_pref("browser.preferences.moreFromMozilla", false);
 user_pref("browser.aboutConfig.showWarning", false);

 // PREF: disable welcome notices
-//user_pref("browser.startup.homepage_override.mstone", "ignore"); // What's New page after updates; master switch
+user_pref("browser.startup.homepage_override.mstone", "ignore");
 user_pref("browser.aboutwelcome.enabled", false); // disable Intro screens
    //user_pref("startup.homepage_welcome_url", "");
    //user_pref("startup.homepage_welcome_url.additional", "");
@@ -65,15 +52,16 @@ user_pref("browser.aboutwelcome.enabled", false); // disable Intro screens
 // PREF: disable "What's New" toolbar icon [FF69+]
 //user_pref("browser.messaging-system.whatsNewPanel.enabled", false);

-// PREF: only show List All Tabs icon when needed
-// true=always show tab overflow dropdown (FF106+ default)
-// false=only display tab dropdown when there are too many tabs
-// [1] https://www.ghacks.net/2022/10/19/how-to-hide-firefoxs-list-all-tabs-icon/
-user_pref("browser.tabs.tabmanager.enabled", false);
-
 // PREF: new profile switcher
 user_pref("browser.profiles.enabled", true);

+// PREF: use native title bar buttons [LINUX]
+// [1] https://github.com/yokoffing/Betterfox/issues/320
+//user_pref("widget.gtk.non-native-titlebar-buttons.enabled", true);
+
+// PREF: disable search engine switcher in the URL bar [FF136+]
+//user_pref("browser.urlbar.scotchBonnet.enableOverride", false);
+
 /****************************************************************************
 * SECTION: THEME ADJUSTMENTS                                              *
 ****************************************************************************/
@@ -84,12 +72,6 @@ user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true);
 // PREF: add compact mode back to options
 user_pref("browser.compactmode.show", true);

-// PREF: remove focus indicator for links
-// [1] https://www.askvg.com/firefox-tip-restore-classic-dotted-outline-focus-indicator-for-links/
-user_pref("browser.display.focus_ring_on_anything", true); 
-user_pref("browser.display.focus_ring_style", 0);
-user_pref("browser.display.focus_ring_width", 0);
-
 // PREF: preferred color scheme for websites
 // [SETTING] General>Language and Appearance>Website appearance
 // By default, color scheme matches the theme of your browser toolbar (3).
@@ -110,23 +92,46 @@ user_pref("browser.privateWindowSeparation.enabled", false);
 //user_pref("browser.search.widget.inNavBar", true);

 // PREF: new tab page wallpapers
-user_pref("browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled", true);
+//user_pref("browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled", true); // [DEFAULT FF132+]

 /****************************************************************************
- * SECTION: COOKIE BANNER HANDLING                                         *
+ * SECTION: AI                                                              *
+****************************************************************************/
+// PREF: AI master switch
+// [1] https://github.com/yokoffing/Betterfox/issues/416
+user_pref("browser.ml.enable", false);
+
+// PREF: AI chat
+user_pref("browser.ml.chat.enabled", false);
+
+// PREF: AI chatbot option in right click menu
+user_pref("browser.ml.chat.menu", false);
+
+// PREF: AI-enhanced tab groups
+// [1] https://support.mozilla.org/kb/how-use-ai-enhanced-tab-groups
+user_pref("browser.tabs.groups.smart.enabled", false);
+
+// PREF: link previews
+user_pref("browser.ml.linkPreview.enabled", false);
+
+/****************************************************************************
+ * SECTION: COOKIE BANNER HANDLING                                          *
 ****************************************************************************/

 // PREF: Cookie Banner handling
+// [DEPRECIATED] Future of the project is unclear. See [5] and [6].
 // [NOTE] Feature still enforces Total Cookie Protection to limit 3rd-party cookie tracking [1]
 // [1] https://github.com/mozilla/cookie-banner-rules-list/issues/33#issuecomment-1318460084
 // [2] https://phabricator.services.mozilla.com/D153642
 // [3] https://winaero.com/make-firefox-automatically-click-on-reject-all-in-cookie-banner-consent/
 // [4] https://docs.google.com/spreadsheets/d/1Nb4gVlGadyxix4i4FBDnOeT_eJp2Zcv69o-KfHtK-aA/edit#gid=0
+// [5] https://bugzilla.mozilla.org/show_bug.cgi?id=1940418
+// [6] https://github.com/mozilla/cookie-banner-rules-list/issues/544
 // 2: reject banners if it is a one-click option; otherwise, fall back to the accept button to remove banner
 // 1: reject banners if it is a one-click option; otherwise, keep banners on screen
 // 0: disable all cookie banner handling
-user_pref("cookiebanners.service.mode", 1);
-user_pref("cookiebanners.service.mode.privateBrowsing", 1);
+//user_pref("cookiebanners.service.mode", 1);
+//user_pref("cookiebanners.service.mode.privateBrowsing", 1);

 // PREF: Cookie Banner global rules
 // Global rules that can handle a list of cookie banner libraries and providers on any site.
@@ -135,7 +140,7 @@ user_pref("cookiebanners.service.mode.privateBrowsing", 1);
 //user_pref("cookiebanners.service.enableGlobalRules.subFrames", true); // DEFAULT [FF121+]

 /****************************************************************************
- * SECTION: TRANSLATIONS                                                   *
+ * SECTION: TRANSLATIONS                                                    *
 ****************************************************************************/

 // PREF: Firefox Translations [FF118+]
@@ -157,8 +162,9 @@ user_pref("full-screen-api.transition-duration.enter", "0 0"); // default=200 20
 user_pref("full-screen-api.transition-duration.leave", "0 0"); // default=200 200

 // PREF: disable fullscreen notice
-user_pref("full-screen-api.warning.delay", -1); // default=500
-user_pref("full-screen-api.warning.timeout", 0); // default=3000
+// [NOTE] Adjust to a sensible value, like 1250, if you have security concerns.
+//user_pref("full-screen-api.warning.timeout", 0); // default=3000; alt=1250
+//user_pref("full-screen-api.warning.delay", -1); // default=500

 /****************************************************************************
 * SECTION: FONT APPEARANCE                                                 *
@@ -173,8 +179,7 @@ user_pref("full-screen-api.warning.timeout", 0); // default=3000
 // [2] https://reddit.com/r/firefox/comments/wvs04y/comment/ilklzy1/?context=3
 //user_pref("gfx.font_rendering.cleartype_params.rendering_mode", 5);
 //user_pref("gfx.font_rendering.cleartype_params.cleartype_level", 100);
-//user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_for_families", "");
-//user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_max_size", 6);
+//user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_for_families", ""); // DEFAULT FF135+
 //user_pref("gfx.font_rendering.directwrite.use_gdi_table_loading", false);
 // Some users find these helpful:
    //user_pref("gfx.font_rendering.cleartype_params.gamma", 1750);
@@ -197,11 +202,10 @@ user_pref("full-screen-api.warning.timeout", 0); // default=3000
 user_pref("browser.urlbar.suggest.engines", false);
    //user_pref("browser.urlbar.suggest.searches", false);
 //user_pref("browser.urlbar.quickactions.enabled", false);
-//user_pref("browser.urlbar.shortcuts.quickactions", false);
 //user_pref("browser.urlbar.suggest.weather", true); // DEFAULT [FF108]
    //user_pref("browser.urlbar.weather.ignoreVPN", false); // DEFAULT
-user_pref("browser.urlbar.suggest.calculator", true);
-user_pref("browser.urlbar.unitConversion.enabled", true);
+//user_pref("browser.urlbar.suggest.calculator", true); // [DEFAULT FF137+]
+//user_pref("browser.urlbar.unitConversion.enabled", true); // [DEFAULT FF141+]

 // PREF: disable dropdown suggestions with empty query
 //user_pref("browser.urlbar.suggest.topsites", false);
@@ -213,12 +217,19 @@ user_pref("browser.urlbar.trending.featureGate", false);

 // PREF: disable urlbar suggestions
 //user_pref("browser.urlbar.addons.featureGate", false); // [FF115+]
+//user_pref("browser.urlbar.amp.featureGate", false); // [FF141+] adMarketplace
+//user_pref("browser.urlbar.fakespot.featureGate", false); // [FF130+] [DEFAULT: false]
 //user_pref("browser.urlbar.mdn.featureGate", false); // [FF117+] [HIDDEN PREF]
-//user_pref("browser.urlbar.pocket.featureGate", false); // [FF116+] [DEFAULT: false]
 //user_pref("browser.urlbar.weather.featureGate", false); // [FF108+] [DEFAULT: false]
+//user_pref("browser.urlbar.wikipedia.featureGate", false); // [FF141+]
 //user_pref("browser.urlbar.clipboard.featureGate", false); // [FF118+] [DEFAULT: true FF125+]
 //user_pref("browser.urlbar.yelp.featureGate", false); // [FF124+] [DEFAULT: false]

+// PREF: disable recent searches [FF120+]
+// [NOTE] Recent searches are cleared with history.
+// [1] https://support.mozilla.org/kb/search-suggestions-firefox
+//user_pref("browser.urlbar.recentsearches.featureGate", false);
+
 // PREF: disable tab-to-search [FF85+]
 // Alternatively, you can exclude on a per-engine basis by unchecking them in Options>Search
 // [SETTING] Privacy & Security>Address Bar>When using the address bar, suggest>Search engines
@@ -237,11 +248,14 @@ user_pref("browser.urlbar.trending.featureGate", false);
 // disable=0
 //user_pref("browser.urlbar.maxRichResults", 5); // default=10

-// PREF: text fragments [FF126+ NIGHTLY]
+// PREF: text fragments
+// [WARNING] Enabling can cause tab crashes [4]
 // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1753933#c6
 // [2] https://developer.mozilla.org/en-US/docs/Web/Text_fragments
 // [3] https://web.dev/articles/text-fragments
-//user_pref("dom.text_fragments.enabled", true);
+// [4] https://github.com/yokoffing/Betterfox/issues/397
+//user_pref("dom.text_fragments.enabled", true); // [DEFAULT]
+//user_pref("dom.text_fragments.create_text_fragment.enabled", true);

 /****************************************************************************
 * SECTION: AUTOPLAY                                                        *
@@ -288,16 +302,16 @@ user_pref("browser.urlbar.trending.featureGate", false);
 // [1] https://github.com/arkenfox/user.js/issues/1556
 //user_pref("browser.newtabpage.activity-stream.discoverystream.enabled", false);
 //user_pref("browser.newtabpage.activity-stream.showSearch", true); // NTP Web Search [DEFAULT]
-user_pref("browser.newtabpage.activity-stream.feeds.topsites", false); // Shortcuts
-      //user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); // Shortcuts > Sponsored shortcuts [FF83+]
-//user_pref("browser.newtabpage.activity-stream.showWeather", false); // Weather [FF128+ NIGHTLY]
-    //user_pref("browser.newtabpage.activity-stream.system.showWeather", false); // Weather [FF128+ NIGHTLY]
+//user_pref("browser.newtabpage.activity-stream.feeds.topsites", false); // Shortcuts
+      user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); // Sponsored shortcuts [FF83+]
+//user_pref("browser.newtabpage.activity-stream.showWeather", false); // Weather [FF130+]
+    //user_pref("browser.newtabpage.activity-stream.system.showWeather", false); // hides Weather as an UI option
 user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false); // Recommended by Pocket
-      //user_pref("browser.newtabpage.activity-stream.showSponsored", false); // Sponsored Stories [FF58+]  
+user_pref("browser.newtabpage.activity-stream.showSponsored", false); // Sponsored stories [FF58+]  
+user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false); // [FF140+] Support Firefox
 //user_pref("browser.newtabpage.activity-stream.feeds.section.highlights", false); // Recent Activity [DEFAULT]
      //user_pref("browser.newtabpage.activity-stream.section.highlights.includeBookmarks", false);
      //user_pref("browser.newtabpage.activity-stream.section.highlights.includeDownloads", false);
-      //user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket", false);
      //user_pref("browser.newtabpage.activity-stream.section.highlights.includeVisited", false);
 //user_pref("browser.newtabpage.activity-stream.feeds.snippets", false); // [DEFAULT]

@@ -306,7 +320,7 @@ user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);

 // PREF: clear default topsites
 // [NOTE] This does not block you from adding your own.
-//user_pref("browser.newtabpage.activity-stream.default.sites", "");
+user_pref("browser.newtabpage.activity-stream.default.sites", "");

 // PREF: keep search in the search box; prevent from jumping to address bar
 // [1] https://www.reddit.com/r/firefox/comments/oxwvbo/firefox_start_page_search_options/
@@ -323,8 +337,9 @@ user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
 * SECTION: POCKET                                                            *
 ******************************************************************************/

-// PREF: Disable built-in Pocket extension
-user_pref("extensions.pocket.enabled", false);
+// PREF: disable built-in Pocket extension
+// [1] https://support.mozilla.org/kb/future-of-pocket
+//user_pref("extensions.pocket.enabled", false); // DEFAULT
      //user_pref("extensions.pocket.api"," ");
      //user_pref("extensions.pocket.oAuthConsumerKey", " ");
      //user_pref("extensions.pocket.site", " ");
@@ -590,9 +605,6 @@ user_pref("layout.word_select.eat_space_to_next_word", false);
 //user_pref("mousewheel.with_control.action", 3);
 //user_pref("mousewheel.with_meta.action", 3);

-// PREF: hide image placeholders
-//user_pref("browser.display.show_image_placeholders", false);
-
 // PREF: adjust the minimum tab width
 // Can be overridden by userChrome.css
 //user_pref("browser.tabs.tabMinWidth", 120); // default=76
@@ -626,7 +638,7 @@ user_pref("layout.word_select.eat_space_to_next_word", false);

 // PREF: JPEG XL image format [NIGHTLY]
 // May not affect anything on ESR/Stable channel [2].
-// [TEST] https://jpegxl.io/tutorials/firefox/#firefoxjpegxltutorial
+// [TEST] https://www.jpegxl.io/firefox#firefox-jpegxl-tutorial
 // [1] https://cloudinary.com/blog/the-case-for-jpeg-xl
 // [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1539075#c51
 //user_pref("image.jxl.enabled", true);
@@ -1,33 +1,24 @@
-![GitHub Maintained](https://img.shields.io/badge/open%20source-yes-orange)
-![GitHub Maintained](https://img.shields.io/badge/maintained-yes-yellow)
-[![Visitors](https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2Fyokoffing%2FBetter-Fox&count_bg=%2379C83D&title_bg=%23555555&icon=&icon_color=%23E7E7E7&title=visitors&edge_flat=false)](https://hits.seeyoufarm.com)
+![Badge](https://hitscounter.dev/api/hit?url=https%3A%2F%2Fgithub.com%2Fyokoffing%2FBetterfox&label=&icon=github&color=%23198754&message=&style=flat&tz=US%2FEastern)![GitHub Maintained](https://img.shields.io/badge/maintained-yes-green)![GitHub last commit](https://img.shields.io/github/last-commit/yokoffing/betterfox)![GitHub issues](https://img.shields.io/github/issues/yokoffing/betterfox)![GitHub closed issues](https://img.shields.io/github/issues-closed/yokoffing/betterfox)![GitHub repo size](https://img.shields.io/github/repo-size/yokoffing/betterfox)[![shields.io Stars](https://img.shields.io/github/stars/yokoffing/betterfox)](https://github.com/yokoffing/betterfox/stargazers)

 # Betterfox
-[about:config](https://support.mozilla.org/en-US/kb/about-config-editor-firefox) tweaks to enhance [Mozilla Firefox](https://www.mozilla.org/en-US/firefox/new/). 
+[about:config](https://support.mozilla.org/en-US/kb/about-config-editor-firefox) tweaks to enhance [Mozilla Firefox](https://www.mozilla.org/en-US/firefox/new/).

-31% [faster](https://medium.com/@mihirgrand/comparing-popular-firefox-forks-6fa83fdfdaad#:~:text=31%25%20more%20than%20vanilla%20Firefox) than regular Firefox :rocket:
+## Made for everyday browsing
+[Faster](https://medium.com/@mihirgrand/comparing-popular-firefox-forks-6fa83fdfdaad#:~:text=31%25%20more%20than%20vanilla%20Firefox), more private and secure — without using third-party code.

-Now with support for ESR [128](https://github.com/yokoffing/Betterfox/tree/esr128) :new: 
+Betterfox is an opinionated preference list inspired by the [law of diminishing returns](https://miro.medium.com/v2/resize:fit:1206/1*lcOcxriV_II_lZuXQYLoXg.jpeg) and the [minimum effective dose](https://medium.com/the-mission/less-is-more-the-minimum-effective-dose-e6d56625931e).

 ## Required reading
 0) Create a [backup profile](https://github.com/yokoffing/Betterfox/wiki/Backup).
 1) Download the user.js file [here](https://raw.githubusercontent.com/yokoffing/Betterfox/main/user.js) (Right click > `Save Link As…`).
-2) Review [Common Overrides](https://github.com/yokoffing/Betterfox/wiki/Common-Overrides) and make any necessary changes.
-   * See also [Optional Hardening](https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening) for other recommendations.
+2) Review both [Common Overrides](https://github.com/yokoffing/Betterfox/wiki/Common-Overrides) and [Optional Hardening](https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening) to make any necessary changes.
 3) Open Firefox. In the URL bar, type `about:profiles` and press **Enter**.
-4) For the profile you want to use (or use default), click **Open Folder** in the **Root Directory** section.
+4) For the profile you want to use, click **Open Folder** in the **Root Directory** section.
 5) Move the `user.js` file into the folder.

 *After restarting Firefox:*
 1) Get an **ad blocker** like [uBlock Origin](https://addons.mozilla.org/blog/ublock-origin-everything-you-need-to-know-about-the-ad-blocker/) with our [recommended filters](https://github.com/yokoffing/filterlists#guidelines).
-2) Enable **DNS-level protection** with [NextDNS](https://nextdns.io/?from=xujj63g5). <sup><i>Use the link and support this page!</i></sup>
-    * Check out our configuration [guide](https://github.com/yokoffing/NextDNS-Config) for the best experience.
-    * See how to [quickly enable](https://support.mozilla.org/en-US/kb/dns-over-https) **secure DNS** in Firefox.
-
-## Made for everyday browsing
-**A secure, blazing fast browsing experience. Without breakage.**
-
-Betterfox is an opinionated preference list inspired by the [law of diminishing returns](https://web.archive.org/web/20231108092752if_/https://pmctraining.com/site/wp-content/uploads/2018/04/Law-of-Diminishing-Returns-CHART.png) and the [minimum effective dose](https://medium.com/the-mission/less-is-more-the-minimum-effective-dose-e6d56625931e).
+2) Enable **DNS-level protection** with your chosen [provider](https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening#secure-dns) to further protect against security threats, ads, and trackers.

 ## Simple goals
 1) **Minimalism:** get what isn't needed out of the way
@@ -54,15 +45,18 @@ The `user.js` — a configuration file that controls Firefox settings — is cur
 > [!IMPORTANT]
 > While the browsers listed below incorporate Betterfox to some extent, they often modify it in ways that reduce its effectiveness. For optimal results, apply the `user.js` file even when using Firefox forks.

-* [Zen](https://github.com/zen-browser/desktop?tab=readme-ov-file) | [files](https://github.com/zen-browser/desktop/blob/main/src/browser/app/profile/better-fox.js) (July 2024)
+* [Zen](https://github.com/zen-browser/desktop?tab=readme-ov-file) | [files](https://github.com/zen-browser/desktop/blob/stable/src/browser/app/profile/zen-browser.js) (July 2024)
+* [FireDragon](https://github.com/dr460nf1r3/firedragon-browser/blob/master/README.md) | [files](https://github.com/dr460nf1r3/firedragon-browser/blob/55fc6e5029542cd90fabe23cb44c89568d74d006/firedragon.cfg#L822-L824) (Jan 2024?)
 * [Midori](https://github.com/goastian/midori-desktop/blob/ESR115/README.md) | [files](https://github.com/goastian/midori-desktop/blob/f3d8d96eb8e08f35a64e3c957bea4e839d7c7730/floorp/browser/components/userjsUtils.sys.mjs#L28-L33) (Dec 2023?)
 * [Mercury](https://github.com/Alex313031/Mercury/releases/tag/v.115.3.0) | [files](https://github.com/Alex313031/Mercury/commit/eb9600f9fb8f48c8f5b5c6f3264fbcdb5caff7f5) (Sep 2023)
-* [Waterfox](https://www.waterfox.net/en-US/docs/releases/G6.0/) | [files](https://github.com/WaterfoxCo/Waterfox/tree/current/waterfox/browser/app/profile) (Sep 2023)
+* [Waterfox](https://www.waterfox.net/docs/releases/G6.0/) | [files](https://github.com/WaterfoxCo/Waterfox/tree/current/waterfox/browser/app/profile) (Sep 2023)
 * [Floorp](https://github.com/Floorp-Projects/Floorp#-betterfox) <sup>[1](https://github.com/Floorp-Projects/Floorp/issues/233#issuecomment-1543557167) [2](https://blog.ablaze.one/3135/2023-04-01/)</sup> | [files](https://github.com/Floorp-Projects/Floorp/blob/ESR115/floorp/browser/components/preferences/userjs.inc.xhtml) (Apr 2023)
 * [Pulse](https://github.com/pulse-browser/browser#%EF%B8%8F-credits) | [files](https://github.com/pulse-browser/browser/tree/alpha/src/browser/app/profile) (Dec 2021)
 * [Ghostery Private Browser](https://github.com/ghostery/user-agent-desktop#community) <sup>[1](https://web.archive.org/web/20210509171835/https://www.ghostery.com/ghostery-dawn-update-more/) [2](https://web.archive.org/web/20210921114333/https://www.ghostery.com/ghostery-dawn-product-update/)</sup> | [files](https://github.com/ghostery/user-agent-desktop/tree/main/brands/ghostery/branding/pref) (Feb 2021)

 ### YouTube
+* [A Better Firefox](https://youtu.be/JuHIwCFx34Q?si=1dx39t3HX5kzNVj-&t=133) (Mar 2025)
+* [Ditch Chrome for One Of These BETTER BROWSERS!](https://youtu.be/ygkxFc8SZlc?si=m5NQe-b_oFXs5crb&t=230) (Aug 2024)
 * [The ULTIMATE Browser Tier List](https://youtu.be/j5r6jFE8gic?t=560) (Mar 2023)
 * [I Hate Firefox. But I'm Still Switching Back to It.](https://youtu.be/w0SJFED5xK0?t=220) (Nov 2022)
 * [Español] [Optimize and Accelerate Firefox](https://www.youtube.com/watch?v=3XtoONmq5_Q) (Nov 2022) 
@@ -73,6 +67,7 @@ The `user.js` — a configuration file that controls Firefox settings — is cur
 * [GhoSTORIES with Franz & Pete](https://anchor.fm/ghostories/episodes/S2E6-We-Talking-Ghostery-Dawn----Again-er0q02/a-a4o5vmh) | 17:05–18:40 (Feb 2021)

 ### Articles
+* [Español] [Firefox is an excellent browser, but this small modification makes it much faster and more private](https://www.genbeta.com/a-fondo/firefox-excelente-navegador-esta-pequena-modificacion-hace-mucho-rapido-privado-asi-funciona-betterfox) (Jan 2025)
 * [Browsers for Daily Use](https://anhkhoakz.neocities.org/blog/browsers-for-daily-using/#firefox-but-hardened) (Jan 2024)
 * [Avoiding Manifest V3 – Escaping the Ad-Pocalypse](https://www.xbitlabs.com/avoiding-manifest-v3/) (Dec 2023)
 * [German] [Pulse Browser Review: Firefox fork with Turbo tweaks and Opera sidebar](https://www.computerbild.de/artikel/cb-Tipps-Software-Pulse-Browser-Review-ein-Firefox-Fork-mit-Seitenleiste-wie-bei-Opera-35644139.html#:~:text=Noch%20mehr%20Speed%2DFeatures) (Apr 2023)
@@ -106,9 +101,6 @@ If you like the project, leave a :star: (top right) and become a [stargazer](htt
 ## Credit
 * Betterfox mirrors the ongoing work provided by [arkenfox](https://github.com/arkenfox/user.js). Additionally, this repository includes content reproduced or adapted from other sources. Credit for overlapping material goes to the original authors.
 * Appreciation goes to the [Firefox](https://www.mozilla.org/en-US/firefox/new/) team and developers working on [Bugzilla](https://bugzilla.mozilla.org/home), fighting for the open web.
+* Thanks to [Denperidge](https://github.com/Denperidge) for adding [`install.py`](https://github.com/yokoffing/Betterfox/blob/main/install.py) for advanced users in v.131.
 * A special thanks to [Alex Kontos](https://github.com/MrAlex94) of [Waterfox](https://github.com/WaterfoxCo/Waterfox) for his collaboration in v.116.
 * Many thanks to the 2021 [Ghostery](https://github.com/ghostery) team for testing Betterfox at scale in its early days.
-
-<div align='center'>
-  <a href='https://www.websitecounterfree.com'><img src='https://www.websitecounterfree.com/c.php?d=9&id=19653&s=1' border='0' alt='Free Website Counter'></a><br / >
-since 23 July 2022</div>
@@ -3,7 +3,7 @@
 * Securefox                                                                *
 * "Natura non contristatur"                                                *     
 * priority: provide sensible security and privacy                          *
- * version: 129                                                             *
+ * version: 146                                                             *
 * url: https://github.com/yokoffing/Betterfox                              *
 * credit: Most prefs are reproduced and adapted from the arkenfox project  *
 * credit urL: https://github.com/arkenfox/user.js                          *
@@ -12,19 +12,19 @@
 /****************************************************************************
 * SECTION: TRACKING PROTECTION                                             *
 ****************************************************************************/
-
-// PREF: Enhanced Tracking Protection (ETP)
-// Tracking Content blocking will strip cookies and block all resource requests to domains listed in Disconnect.me.
-// Firefox deletes all stored site data (incl. cookies, browser storage) if the site is a known tracker and hasn’t
-// been interacted with in the last 30 days.
-// [ALLOWLIST] https://disconnect.me/trackerprotection/unblocked
-// [NOTE] FF86: "Strict" tracking protection enables dFPI.
-// [1] https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
-// [2] https://www.reddit.com/r/firefox/comments/l7xetb/network_priority_for_firefoxs_enhanced_tracking/gle2mqn/?web2x&context=3
+// PREF: enable ETP Strict Mode [FF86+]
+// ETP Strict Mode enables Total Cookie Protection (TCP)
+// [NOTE] Adding site exceptions disables all ETP protections for that site and increases the risk of
+// cross-site state tracking e.g. exceptions for SiteA and SiteB means PartyC on both sites is shared
+// [1] https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/
+// [2] https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
+// [3] https://www.reddit.com/r/firefox/comments/l7xetb/network_priority_for_firefoxs_enhanced_tracking/gle2mqn/?web2x&context=3
+// [SETTING] to add site exceptions: Urlbar>ETP Shield
+// [SETTING] to manage site exceptions: Options>Privacy & Security>Enhanced Tracking Protection>Manage Exceptions
+user_pref("browser.contentblocking.category", "strict"); // [HIDDEN PREF]
 //user_pref("privacy.trackingprotection.enabled", true); // enabled with "Strict"
 //user_pref("privacy.trackingprotection.pbmode.enabled", true); // DEFAULT
 //user_pref("browser.contentblocking.customBlockList.preferences.ui.enabled", false); // DEFAULT
-user_pref("browser.contentblocking.category", "strict");
 //user_pref("privacy.trackingprotection.socialtracking.enabled", true); // enabled with "Strict"
    //user_pref("privacy.socialtracking.block_cookies.enabled", true); // DEFAULT
 //user_pref("privacy.trackingprotection.cryptomining.enabled", true); // DEFAULT
@@ -38,6 +38,23 @@ user_pref("browser.contentblocking.category", "strict");
    //user_pref("privacy.annotate_channels.strict_list.pbmode.enabled", true); // DEFAULT
 //user_pref("privacy.fingerprintingProtection", true); // [FF114+] [ETP FF119+] enabled with "Strict"
    //user_pref("privacy.fingerprintingProtection.pbmode", true); // DEFAULT
+//user_pref("privacy.bounceTrackingProtection.mode", 1); // [FF131+] [ETP FF133+]
+// [1] https://searchfox.org/mozilla-central/source/toolkit/components/antitracking/bouncetrackingprotection/nsIBounceTrackingProtection.idl#11-23
+
+// PREF: disable ETP web compat features (about:compat) [FF93+]
+// [SETUP-HARDEN] Includes skip lists, heuristics (SmartBlock) and automatic grants
+// Opener and redirect heuristics are granted for 30 days, see [3]
+// [1] https://blog.mozilla.org/security/2021/07/13/smartblock-v2/
+// [2] https://hg.mozilla.org/mozilla-central/rev/e5483fd469ab#l4.12
+// [3] https://developer.mozilla.org/docs/Web/Privacy/State_Partitioning#storage_access_heuristics
+    // user_pref("privacy.antitracking.enableWebcompat", false);
+
+// PREF: set ETP Strict/Custom exception lists (FF141+)
+// [SETTING] Options>Privacy & Security>Enhanced Tracking Protection>Strict/Custom>Fix major [baseline] | minor [convenience]
+// [1] https://support.mozilla.org/en-US/kb/manage-enhanced-tracking-protection-exceptions
+// [2] https://etp-exceptions.mozilla.org/
+// user_pref("privacy.trackingprotection.allow_list.baseline.enabled", true); // [DEFAULT: true]
+// user_pref("privacy.trackingprotection.allow_list.convenience.enabled", true); // [DEFAULT: true]

 // PREF: query stripping
 // Currently uses a small list [1]
@@ -54,15 +71,28 @@ user_pref("browser.contentblocking.category", "strict");
 //user_pref("privacy.query_stripping.strip_list", ""); // DEFAULT
 //user_pref("privacy.query_stripping.strip_on_share.enabled", true);

-// PREF: allow embedded tweets, Instagram and Reddit posts, and TikTok embeds
+// PREF: Smartblock
+// [1] https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection
+// [2] https://www.youtube.com/watch?v=VE8SrClOTgw
+// [3] https://searchfox.org/mozilla-central/source/browser/extensions/webcompat/data/shims.js
+//user_pref("extensions.webcompat.enable_shims", true); // [HIDDEN] enabled with "Strict"
+//user_pref("extensions.webcompat.smartblockEmbeds.enabled", true); // [DEFAULT FF137+]
+
+// PREF: allow embedded tweets and reddit posts [FF136+]
 // [TEST - reddit embed] https://www.pcgamer.com/amazing-halo-infinite-bugs-are-already-rolling-in/
 // [TEST - instagram embed] https://www.ndtv.com/entertainment/bharti-singh-and-husband-haarsh-limbachiyaa-announce-pregnancy-see-trending-post-2646359
 // [TEST - tweet embed] https://www.newsweek.com/cryptic-tweet-britney-spears-shows-elton-john-collab-may-date-back-2015-1728036
 // [TEST - tiktok embed] https://www.vulture.com/article/snl-adds-four-new-cast-members-for-season-48.html
+// [TEST - truthsocial embed] https://www.newsweek.com/donald-trump-congratulates-patrick-brittany-mahomes-new-baby-2027097
 // [1] https://www.reddit.com/r/firefox/comments/l79nxy/firefox_dev_is_ignoring_social_tracking_preference/gl84ukk
 // [2] https://www.reddit.com/r/firefox/comments/pvds9m/reddit_embeds_not_loading/
-user_pref("urlclassifier.trackingSkipURLs", "*.reddit.com, *.twitter.com, *.twimg.com, *.tiktok.com"); // MANUAL
-user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.twitter.com, *.twimg.com"); // MANUAL
+// [3] https://github.com/yokoffing/Betterfox/issues/413
+//user_pref("urlclassifier.trackingSkipURLs", "*://embed.reddit.com/*,*://*.twitter.com/*,*://*.twimg.com/*"); // MANUAL
+//user_pref("urlclassifier.features.socialtracking.skipURLs", "*://*.twitter.com/*,*://*.twimg.com/*"); // MANUAL
+
+// PREF: allow embedded tweets, Instagram and Reddit posts, and TikTok embeds [before FF136+]
+//user_pref("urlclassifier.trackingSkipURLs", "*.reddit.com, *.twitter.com, *.twimg.com, *.tiktok.com"); // MANUAL
+//user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.twitter.com, *.twimg.com"); // MANUAL

 // PREF: lower the priority of network loads for resources on the tracking protection list [NIGHTLY]
 // [1] https://github.com/arkenfox/user.js/issues/102#issuecomment-298413904
@@ -107,7 +137,9 @@ user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.
 // [5] https://hacks.mozilla.org/2021/02/introducing-state-partitioning/
 // [6] https://github.com/arkenfox/user.js/issues/1281
 // [7] https://hacks.mozilla.org/2022/02/improving-the-storage-access-api-in-firefox/
+// [8] https://blog.includesecurity.com/2025/04/cross-site-websocket-hijacking-exploitation-in-2025/
 //user_pref("network.cookie.cookieBehavior", 5); // DEFAULT FF103+
+//user_pref("network.cookie.cookieBehavior.optInPartitioning", true); // [ETP FF132+]
 //user_pref("browser.contentblocking.reject-and-isolate-cookies.preferences.ui.enabled", true); // DEFAULT

 // PREF: Network Partitioning
@@ -120,18 +152,12 @@ user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.
 // [3] https://blog.mozilla.org/security/2021/01/26/supercookie-protections/
 //user_pref("privacy.partition.network_state", true); // DEFAULT
    //user_pref("privacy.partition.serviceWorkers", true); // [DEFAULT: true FF105+]
-    //user_pref("privacy.partition.network_state.ocsp_cache", true); // enabled with "Strict" [DEFAULT: true FF123+]
+    //user_pref("privacy.partition.network_state.ocsp_cache", true); // [DEFAULT: true FF123+]
    //user_pref("privacy.partition.bloburl_per_partition_key", true); // [FF118+]
 // enable APS (Always Partitioning Storage) [FF104+]
 //user_pref("privacy.partition.always_partition_third_party_non_cookie_storage", true); // [DEFAULT: true FF109+]
 //user_pref("privacy.partition.always_partition_third_party_non_cookie_storage.exempt_sessionstorage", false); // [DEFAULT: false FF109+]

-// PREF: Smartblock
-// [1] https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection
-// [2] https://www.youtube.com/watch?v=VE8SrClOTgw
-// [3] https://searchfox.org/mozilla-central/source/browser/extensions/webcompat/data/shims.js
-//user_pref("extensions.webcompat.enable_shims", true); // enabled with "Strict"
-
 // PREF: Redirect Tracking Prevention / Cookie Purging
 // All storage is cleared (more or less) daily from origins that are known trackers and that
 // haven’t received a top-level user interaction (including scroll) within the last 45 days.
@@ -143,14 +169,6 @@ user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.
 // [6] https://firefox-source-docs.mozilla.org/toolkit/components/antitracking/anti-tracking/cookie-purging/index.html
 //user_pref("privacy.purge_trackers.enabled", true); // DEFAULT

-// PREF: Bounce Tracking Protection [FF127+]
-// A new standardised variant of Cookie Purging that uses heuristics to detect bounce trackers,
-// rather than relying on tracker lists.
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1895222
-// [2] https://groups.google.com/a/mozilla.org/g/dev-platform/c/M6erM0SjPTM
-//user_pref("privacy.bounceTrackingProtection.enabled", true);
-//user_pref("privacy.bounceTrackingProtection.enableDryRunMode", false); // false enables tracker data purging
-
 // PREF: SameSite Cookies
 // Currently, the absence of the SameSite attribute implies that cookies will be
 // attached to any request for a given origin, no matter who initiated that request.
@@ -165,9 +183,10 @@ user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.
 // [6] https://web.dev/samesite-cookies-explained/
 // [7] https://portswigger.net/web-security/csrf/bypassing-samesite-restrictions
 // [8] https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies
+// [9] https://blog.includesecurity.com/2025/04/cross-site-websocket-hijacking-exploitation-in-2025/
 // [TEST] https://samesite-sandbox.glitch.me/
 //user_pref("network.cookie.sameSite.laxByDefault", true);
-user_pref("network.cookie.sameSite.noneRequiresSecure", true);
+//user_pref("network.cookie.sameSite.noneRequiresSecure", true); // [DEFAULT FF131+]
 //user_pref("network.cookie.sameSite.schemeful", true);

 // PREF: Hyperlink Auditing (click tracking)
@@ -194,8 +213,9 @@ user_pref("network.cookie.sameSite.noneRequiresSecure", true);
 // PREF: remove temp files opened from non-PB windows with an external application
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=302433,1738574
 // [2] https://github.com/arkenfox/user.js/issues/1732
+// [3] https://bugzilla.mozilla.org/302433
 user_pref("browser.download.start_downloads_in_tmp_dir", true); // [FF102+]
-user_pref("browser.helperApps.deleteTempFileOnExit", true);
+//user_pref("browser.helperApps.deleteTempFileOnExit", true); // DEFAULT [FF108]

 // PREF: disable UITour backend
 // This way, there is no chance that a remote page can use it.
@@ -261,6 +281,7 @@ user_pref("security.OCSP.enabled", 0);
 // [1] https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/
 // [2] https://www.imperialviolet.org/2014/04/19/revchecking.html
 // [3] https://www.ssl.com/blogs/how-do-browsers-handle-revoked-ssl-tls-certificates/#ftoc-heading-3
+// [4] https://letsencrypt.org/2024/12/05/ending-ocsp/
 //user_pref("security.OCSP.require", true);
      
 // PREF: CRLite
@@ -268,12 +289,12 @@ user_pref("security.OCSP.enabled", 0);
 // CRLite is faster and more private than OCSP [2].
 // 0 = disabled
 // 1 = consult CRLite but only collect telemetry
-// 2 = consult CRLite and enforce both "Revoked" and "Not Revoked" results
-// 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" [FF99+, default FF100+]
+// 2 = consult CRLite and enforce both "Revoked" and "Not Revoked" results (default)
+// 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (removed FF145)
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1429800,1670985,1753071
 // [2] https://blog.mozilla.org/security/tag/crlite/
-user_pref("security.remote_settings.crlite_filters.enabled", true);
-user_pref("security.pki.crlite_mode", 2);
+//user_pref("security.remote_settings.crlite_filters.enabled", true); // [DEFAULT: true FF137+]
+//user_pref("security.pki.crlite_mode", 2); // [DEFAULT: 2 FF142+]

 // PREF: HTTP Public Key Pinning (HPKP)
 // HPKP enhances the security of SSL certificates by associating
@@ -302,14 +323,23 @@ user_pref("security.pki.crlite_mode", 2);
 //user_pref("security.enterprise_roots.enabled", false);
    //user_pref("security.certerrors.mitm.auto_enable_enterprise_roots", false);

-// PREF: disable content analysis by DLP (Data Loss Prevention) agents [FF124+]
-// DLP agents are background processes on managed computers that allow enterprises to monitor locally running
-// applications for data exfiltration events, which they can allow/block based on customer defined DLP policies.
+// PREF: disable content analysis by Data Loss Prevention (DLP) agents [FF124+]
+// DLP agents are background processes on managed computers that
+// allow enterprises to monitor locally running applications for
+// data exfiltration events, which they can allow/block based on
+// customer-defined DLP policies.
 // [1] https://github.com/chromium/content_analysis_sdk
 // [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1880314
 //user_pref("browser.contentanalysis.enabled", false); // [FF121+] [DEFAULT]
 //user_pref("browser.contentanalysis.default_result", 0; // [FF127+] [DEFAULT]

+// PREF: disable referrer and storage access for resources injected by content scripts [FF139+]
+user_pref("privacy.antitracking.isolateContentScriptResources", true);
+
+// PREF: disable CSP Level 2 Reporting [FF140+]
+// [1] https://github.com/yokoffing/Betterfox/issues/415
+user_pref("security.csp.reporting.enabled", false);
+
 /****************************************************************************
 * SECTION: SSL (Secure Sockets Layer) / TLS (Transport Layer Security)    *
 ****************************************************************************/
@@ -349,6 +379,12 @@ user_pref("browser.xul.error_pages.expert_bad_cert", true);
 // [3] https://blog.cloudflare.com/tls-1-3-overview-and-q-and-a/
 user_pref("security.tls.enable_0rtt_data", false);

+// PREF: enable hybrid post-quantum key exchange
+// [1] https://pq.cloudflareresearch.com
+// [2] https://github.com/zen-browser/desktop/pull/2275
+//user_pref("security.tls.enable_kyber", true);
+//user_pref("network.http.http3.enable_kyber", true);
+
 /****************************************************************************
 * SECTION: FINGERPRINT PROTECTION (FPP)                                    *
 ****************************************************************************/
@@ -392,7 +428,7 @@ user_pref("security.tls.enable_0rtt_data", false);
 * SECTION: DISK AVOIDANCE                                                  *
 ****************************************************************************/

-// PREF: prevent media cache from writing to disk in Private Browsing
+// PREF: set media cache in Private Browsing to in-memory
 // [NOTE] MSE (Media Source Extensions) are already stored in-memory in PB
 user_pref("browser.privatebrowsing.forceMediaMemoryCache", true);

@@ -423,10 +459,6 @@ user_pref("browser.sessionstore.interval", 60000); // 1 minute; default=15000 (1
 // Favicons are stored as .ico files in profile_dir\shortcutCache.
 //user_pref("browser.shell.shortcutFavicons", false);

-// PREF: remove temp files opened with an external application
-// [1] https://bugzilla.mozilla.org/302433
-//user_pref("browser.helperApps.deleteTempFileOnExit", true); // DEFAULT [FF108]
-
 // PREF: disable page thumbnails capturing
 // Page thumbnails are only used in chrome/privileged contexts.
 //user_pref("browser.pagethumbnails.capturing_disabled", true); // [HIDDEN PREF]
@@ -471,6 +503,17 @@ user_pref("browser.sessionstore.interval", 60000); // 1 minute; default=15000 (1
   //user_pref("privacy.cpd.siteSettings", false);
   //user_pref("privacy.clearHistory.siteSettings", false);

+// PREF: purge session icon in Private Browsing windows
+user_pref("browser.privatebrowsing.resetPBM.enabled", true);
+
+// PREF: delete files downloaded in Private Browsing when all private windows are closed
+// When downloading a file in private browsing mode, the user will be prompted
+// to chose whether they want to keep or delete files that are downloaded
+// while in private browsing. 
+//user_pref("browser.download.enableDeletePrivate", true);
+//user_pref("browser.download.deletePrivateChosen", true);
+//user_pref("browser.download.deletePrivate", true);
+
 /******************************************************************************
 * SECTION: SHUTDOWN & SANITIZING                                             *
 ******************************************************************************/
@@ -551,8 +594,8 @@ user_pref("browser.urlbar.untrimOnUserInteraction.featureGate", true);

 // PREF: display "Not Secure" text on HTTP sites
 // Needed with HTTPS-First Policy; not needed with HTTPS-Only Mode.
-user_pref("security.insecure_connection_text.enabled", true);
-user_pref("security.insecure_connection_text.pbmode.enabled", true);
+//user_pref("security.insecure_connection_text.enabled", true); // [DEFAULT FF136+]
+//user_pref("security.insecure_connection_text.pbmode.enabled", true); // [DEFAULT FF136+]

 // PREF: do not show search terms in URL bar [FF110+]
 // Show search query instead of URL on search results pages.
@@ -567,11 +610,13 @@ user_pref("browser.search.separatePrivateDefault.ui.enabled", true);
    //user_pref("browser.search.separatePrivateDefault", true); // DEFAULT

 // PREF: enable option to add custom search engine
+// Before FF140, this pref was hidden.
 // [SETTINGS] Settings -> Search -> Search Shortcuts -> Add
 // [EXAMPLE] https://search.brave.com/search?q=%s
 // [EXAMPLE] https://lite.duckduckgo.com/lite/?q=%s
 // [1] https://reddit.com/r/firefox/comments/xkzswb/adding_firefox_search_engine_manually/
-user_pref("browser.urlbar.update2.engineAliasRefresh", true); // HIDDEN
+// [2] https://www.mozilla.org/en-US/firefox/140.0/releasenotes/
+//user_pref("browser.urlbar.update2.engineAliasRefresh", true); // [DEFAULT FF140+]

 // PREF: disable live search suggestions (Google, Bing, etc.)
 // [WARNING] Search engines keylog every character you type from the URL bar.
@@ -580,13 +625,16 @@ user_pref("browser.urlbar.update2.engineAliasRefresh", true); // HIDDEN
 // [SETTING] Search>Provide search suggestions > Show search suggestions in address bar result
 user_pref("browser.search.suggest.enabled", false);
    //user_pref("browser.search.suggest.enabled.private", false); // DEFAULT
-user_pref("browser.urlbar.suggest.searches", false);
+
+// PREF: disable Show recent searches
+// [SETTING] Search > Search Suggestions > Show recent searches 
+//user_pref("browser.urlbar.suggest.recentsearches", false);

 // PREF: disable Firefox Suggest
 // [1] https://github.com/arkenfox/user.js/issues/1257
 user_pref("browser.urlbar.quicksuggest.enabled", false); // controls whether the UI is shown
-user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false); // [FF92+] 
-user_pref("browser.urlbar.suggest.quicksuggest.nonsponsored", false); // [FF95+]
+    //user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false); // [FF92+] 
+    //user_pref("browser.urlbar.suggest.quicksuggest.nonsponsored", false); // [FF95+]
 // hide Firefox Suggest label in URL dropdown box
 user_pref("browser.urlbar.groupLabels.enabled", false);

@@ -625,16 +673,14 @@ user_pref("network.IDN_show_punycode", true);
 /******************************************************************************
 * SECTION: HTTPS-FIRST POLICY                          *
 ******************************************************************************/
-
 // PREF: HTTPS-First Policy
 // Firefox attempts to make all connections to websites secure,
 // and falls back to insecure connections only when a website
 // does not support it. Unlike HTTPS-Only Mode, Firefox
 // will NOT ask for your permission before connecting to a website
 // that doesn’t support secure connections.
-// As of August 2023, Google estimates that 5-10% of traffic
-// has remained on HTTP, allowing attackers to eavesdrop
-// on or change that data [6].
+// As of October 2025, Google estimates that 3-5% of traffic
+// is insecure, allowing attackers to eavesdrop on or change that data [8].
 // [NOTE] HTTPS-Only Mode needs to be disabled for HTTPS First to work.
 // [TEST] http://example.com [upgrade]
 // [TEST] http://httpforever.com/ [no upgrade]
@@ -644,10 +690,22 @@ user_pref("network.IDN_show_punycode", true);
 // [4] https://web.dev/why-https-matters/
 // [5] https://www.cloudflare.com/learning/ssl/why-use-https/
 // [6] https://blog.chromium.org/2023/08/towards-https-by-default.html
-user_pref("dom.security.https_first", true); // [DEFAULT FF129+]
+// [7] https://attackanddefense.dev/2025/03/31/https-first-in-firefox-136.html
+// [8] https://security.googleblog.com/2025/10/https-by-default.html
+//user_pref("dom.security.https_first", true); // [DEFAULT FF136+]
 //user_pref("dom.security.https_first_pbm", true); // [DEFAULT FF91+]
 //user_pref("dom.security.https_first_schemeless", true); // [FF120+] [DEFAULT FF129+]

+// PREF: block insecure passive content (images) on HTTPS pages
+// [WARNING] This preference blocks all mixed content, including upgradable.
+// Firefox still attempts an HTTP connection if it can't find a secure one,
+// even with HTTPS First Policy. Although rare, this leaves a small risk of
+// a malicious image being served through a MITM attack.
+// Disable this pref if using HTTPS-Only Mode.
+// [NOTE] Enterprise users may need to enable this setting [1].
+// [1] https://blog.mozilla.org/security/2024/06/05/firefox-will-upgrade-more-mixed-content-in-version-127/
+//user_pref("security.mixed_content.block_display_content", true); // Defense-in-depth (see HTTPS-Only mode)
+
 /******************************************************************************
 * SECTION: HTTPS-ONLY MODE                              *
 ******************************************************************************/
@@ -656,9 +714,8 @@ user_pref("dom.security.https_first", true); // [DEFAULT FF129+]
 // by a server. Options to use HTTP are then provided.
 // [NOTE] When "https_only_mode" (all windows) is true,
 // "https_only_mode_pbm" (private windows only) is ignored.
-// As of August 2023, Google estimates that 5-10% of traffic
-// has remained on HTTP, allowing attackers to eavesdrop
-// on or change that data [5].
+// As of October 2025, Google estimates that 3-5% of traffic
+// is insecure, allowing attackers to eavesdrop on or change that data [6].
 // [SETTING] to add site exceptions: Padlock>HTTPS-Only mode>On/Off/Off temporarily
 // [SETTING] Privacy & Security>HTTPS-Only Mode
 // [TEST] http://example.com [upgrade]
@@ -668,17 +725,23 @@ user_pref("dom.security.https_first", true); // [DEFAULT FF129+]
 // [3] https://web.dev/why-https-matters/
 // [4] https://www.cloudflare.com/learning/ssl/why-use-https/
 // [5] https://blog.chromium.org/2023/08/towards-https-by-default.html
+// [6] https://security.googleblog.com/2025/10/https-by-default.html

-// PREF: enable HTTPS-only Mode
-//user_pref("dom.security.https_only_mode_pbm", true); // Private Browsing windows only
-//user_pref("dom.security.https_only_mode", true); // Normal + Private Browsing windows
+// PREF: enable HTTPS-Only mode in all windows
+// When the top-level is HTTPS, insecure subresources are also upgraded (silent fail)
+// [SETTING] to add site exceptions: Padlock>HTTPS-Only mode>On (after "Continue to HTTP Site")
+// [SETTING] Privacy & Security>HTTPS-Only Mode (and manage exceptions)
+// [TEST] http://example.com [upgrade]
+// [TEST] http://httpforever.com/ | http://http.rip [no upgrade]
+user_pref("dom.security.https_only_mode", true); // [FF76+]
+    //user_pref("dom.security.https_only_mode_pbm", true); // [FF80+] Private Browsing windows only

 // PREF: offer suggestion for HTTPS site when available
 // [1] https://x.com/leli_gibts_scho/status/1371463866606059528
 user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);

 // PREF: HTTP background requests in HTTPS-only Mode
-// When attempting to upgrade, if the server doesn't respond within 3 seconds[=default time],
+// When attempting to upgrade, if the server doesn't respond within a few seconds,
 // Firefox sends HTTP requests in order to check if the server supports HTTPS or not.
 // This is done to avoid waiting for a timeout which takes 90 seconds.
 // Firefox only sends top level domain when falling back to http.
@@ -687,10 +750,6 @@ user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1642387,1660945
 // [2] https://blog.mozilla.org/attack-and-defense/2021/03/10/insights-into-https-only-mode/
 //user_pref("dom.security.https_only_mode_send_http_background_request", true); // DEFAULT
-    //user_pref("dom.security.https_only_fire_http_request_background_timer_ms", 3000); // DEFAULT
-
-// PREF: disable HTTPS-Only mode for local resources
-//user_pref("dom.security.https_only_mode.upgrade_local", false); // DEFAULT

 /******************************************************************************
 * SECTION: DNS-over-HTTPS                                                    *
@@ -824,7 +883,6 @@ user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);
 // [NOTE] This does not clear any passwords already saved.
 // [SETTING] Privacy & Security>Logins and Passwords>Ask to save logins and passwords for websites
 //user_pref("signon.rememberSignons", false);
-    //user_pref("signon.rememberSignons.visibilityToggle", true); // DEFAULT
    //user_pref("signon.schemeUpgrades", true); // DEFAULT
    //user_pref("signon.showAutoCompleteFooter", true); // DEFAULT
    //user_pref("signon.autologin.proxy", false); // DEFAULT
@@ -872,10 +930,11 @@ user_pref("signon.privateBrowsingCapture.enabled", false);

 // PREF: limit (or disable) HTTP authentication credentials dialogs triggered by sub-resources [FF41+]
 // Hardens against potential credentials phishing.
+// [WARNING] Hardening this pref may prevent you from subscribing to SoGo calendars in Thunderbird 138
 // 0=don't allow sub-resources to open HTTP authentication credentials dialogs
 // 1=don't allow cross-origin sub-resources to open HTTP authentication credentials dialogs
 // 2=allow sub-resources to open HTTP authentication credentials dialogs (default)
-// [1] https://www.fxsitecompat.com/en-CA/docs/2015/http-auth-dialog-can-no-longer-be-triggered-by-cross-origin-resources/
+// [1] https://web.archive.org/web/20181123134351/https://www.fxsitecompat.com/en-CA/docs/2015/http-auth-dialog-can-no-longer-be-triggered-by-cross-origin-resources/
 user_pref("network.auth.subresource-http-auth-allow", 1);

 // PREF: prevent password truncation when submitting form data
@@ -887,6 +946,10 @@ user_pref("editor.truncate_user_pastes", false);
 // [DO NOT TOUCH] Icons will double-up if the website implements it natively.
 //user_pref("layout.forms.reveal-password-button.enabled", true); // always show icon in password fields

+// PREF: disable automatic authentication on Microsoft sites [WINDOWS]
+// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1695693,1719301
+//user_pref("network.http.windows-sso.enabled", false);
+
 /****************************************************************************
 * SECTION: ADDRESS + CREDIT CARD MANAGER                                   *
 ****************************************************************************/
@@ -898,84 +961,43 @@ user_pref("editor.truncate_user_pastes", false);
 //user_pref("extensions.formautofill.addresses.enabled", false);
 //user_pref("extensions.formautofill.creditCards.enabled", false);

-/******************************************************************************
- * SECTION: MIXED CONTENT + CROSS-SITE                                       *
-******************************************************************************/
-
-// PREF: block insecure active content (scripts) on HTTPS pages
-// [TEST] https://mixed-script.badssl.com/
-// [1] https://trac.torproject.org/projects/tor/ticket/21323
-//user_pref("security.mixed_content.block_active_content", true); // DEFAULT
-
-// PREF: upgrade passive content to use HTTPS on secure pages
-// Firefox will now automatically try to upgrade <img>, <audio>, and <video> elements
-// from HTTP to HTTPS if they are embedded within an HTTPS page. If these
-// mixed content elements do not support HTTPS, they will no longer load.
-// [NOTE] Enterprise users may need to disable this setting [1].
-// [1] https://blog.mozilla.org/security/2024/06/05/firefox-will-upgrade-more-mixed-content-in-version-127/
-//user_pref("security.mixed_content.upgrade_display_content", true); // [DEFAULT FF127+]
-    //user_pref("security.mixed_content.upgrade_display_content.audio", true); // [DEFAULT FF119+]
-    //user_pref("security.mixed_content.upgrade_display_content.image", true); // [DEFAULT FF127+]
-    //user_pref("security.mixed_content.upgrade_display_content.video", true); // [DEFAULT FF119+]
-
-// PREF: block insecure passive content (images) on HTTPS pages
-// [WARNING] This preference blocks all mixed content, including upgradable.
-// Firefox still attempts an HTTP connection if it can't find a secure one,
-// even with HTTPS First Policy. Although rare, this leaves a small risk of
-// a malicious image being served through a MITM attack.
-// Disable this pref if using HTTPS-Only Mode.
-// [NOTE] Enterprise users may need to enable this setting [1].
-// [1] https://blog.mozilla.org/security/2024/06/05/firefox-will-upgrade-more-mixed-content-in-version-127/
-user_pref("security.mixed_content.block_display_content", true);
-
-// PREF: block insecure downloads from secure sites
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1660952
-//user_pref("dom.block_download_insecure", true); // DEFAULT
-
-// PREF: allow PDFs to load javascript
-// https://www.reddit.com/r/uBlockOrigin/comments/mulc86/firefox_88_now_supports_javascript_in_pdf_files/
-user_pref("pdfjs.enableScripting", false);
+/****************************************************************************
+ * SECTION: EXTENSIONS                                                      *
+****************************************************************************/

 // PREF: limit allowed extension directories
+// 1=profile, 2=user, 4=application, 8=system, 16=temporary, 31=all
 // The pref value represents the sum: e.g. 5 would be profile and application directories.
 // [WARNING] Breaks usage of files which are installed outside allowed directories.
 // [1] https://archive.is/DYjAM
-// 1=profile, 2=user, 4=application, 8=system, 16=temporary, 31=all
-//user_pref("extensions.enabledScopes", 5); // [HIDDEN PREF] DEFAULT
-  // user_pref("extensions.autoDisableScopes", 15); // [DEFAULT: 15]
+user_pref("extensions.enabledScopes", 5); // [HIDDEN PREF]
+    //user_pref("extensions.autoDisableScopes", 15); // [DEFAULT: 15]

-// PREF: disable bypassing 3rd party extension install prompts
+// PREF: skip 3rd party panel when installing recommended addons [FF82+]
 // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1659530,1681331
-user_pref("extensions.postDownloadThirdPartyPrompt", false);
+//user_pref("extensions.postDownloadThirdPartyPrompt", false);

-// PREF: disable middle click on new tab button opening URLs or searches using clipboard [FF115+]
-// Enable if you're using LINUX.
-//user_pref("browser.tabs.searchclipboardfor.middleclick", false); // DEFAULT WINDOWS macOS
+// PREF: disable mozAddonManager Web API [FF57+]
+// [NOTE] To allow extensions to work on AMO, you also need extensions.webextensions.restrictedDomains.
+// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988
+//user_pref("privacy.resistFingerprinting.block_mozAddonManager", true);

-// PREF: disable content analysis by Data Loss Prevention (DLP) agents
-// DLP agents are background processes on managed computers that
-// allow enterprises to monitor locally running applications for
-// data exfiltration events, which they can allow/block based on
-// customer-defined DLP policies.
-// [1] https://github.com/chromium/content_analysis_sdk
-//user_pref("browser.contentanalysis.default_allow", false); // [FF124+] [DEFAULT: false]
+// PREF: disable webextension restrictions on Mozilla domains [FF60+]
+// [1] https://www.reddit.com/r/firefox/comments/n1lpaf/make_addons_work_on_mozilla_sites/gwdy235/?context=3
+// [2] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988
+//user_pref("extensions.webextensions.restrictedDomains", "");

-// PREF: enforce TLS 1.0 and 1.1 downgrades as session only
-//user_pref("security.tls.version.enable-deprecated", false); // DEFAULT
+// PREF: do not require signing for extensions [ESR/DEV/NIGHTLY ONLY]
+// [1] https://support.mozilla.org/en-US/kb/add-on-signing-in-firefox#w_what-are-my-options-if-i-want-to-use-an-unsigned-add-on-advanced-users
+//user_pref("xpinstall.signatures.required", false);

-// PREF: enable (limited but sufficient) window.opener protection
-// Makes rel=noopener implicit for target=_blank in anchor and area elements when no rel attribute is set.
-// [1] https://jakearchibald.com/2016/performance-benefits-of-rel-noopener/
-//user_pref("dom.targetBlankNoOpener.enabled", true); // DEFAULT
-
-// PREF: enable "window.name" protection
-// If a new page from another domain is loaded into a tab, then window.name is set to an empty string. The original
-// string is restored if the tab reverts back to the original page. This change prevents some cross-site attacks.
-//user_pref("privacy.window.name.update.enabled", true); // DEFAULT
-
-// PREF: disable automatic authentication on Microsoft sites [WINDOWS]
-// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1695693,1719301
-//user_pref("network.http.windows-sso.enabled", false);
+// PREF: disable Quarantined Domains [FF115+]
+// Users may see a notification when running add-ons that are not monitored by Mozilla when they visit certain sites.
+// The notification informs them that “some extensions are not allowed” and were blocked from running on that site.
+// There's no details as to which sites are affected.
+// [1] https://support.mozilla.org/kb/quarantined-domains
+// [2] https://www.ghacks.net/2023/07/04/firefox-115-new-esr-base-and-some-add-ons-may-be-blocked-from-running-on-certain-sites/
+//user_pref("extensions.quarantinedDomains.enabled", true); // [DEFAULT: true]

 /******************************************************************************
 * SECTION: HEADERS / REFERERS                                               *
@@ -1047,7 +1069,7 @@ user_pref("privacy.userContext.ui.enabled", true);

 // PREF: set behavior on "+ Tab" button to display container menu on left click [FF74+]
 // [NOTE] The menu is always shown on long press and right click.
-// [SETTING] General>Tabs>Enable Container Tabs>Settings>Select a container for each new tab ***/
+// [SETTING] General>Tabs>Enable Container Tabs>Settings>Select a container for each new tab
 //user_pref("privacy.userContext.newTabContainerOnLeftClick.enabled", true);

 // PREF: set external links to open in site-specific containers [FF123+]
@@ -1073,13 +1095,14 @@ user_pref("privacy.userContext.ui.enabled", true);
 //user_pref("privacy.webrtc.globalMuteToggles", true);

 // PREF: force WebRTC inside the proxy [FF70+]
-user_pref("media.peerconnection.ice.proxy_only_if_behind_proxy", true);
+//user_pref("media.peerconnection.ice.proxy_only_if_behind_proxy", true);

 // PREF: force a single network interface for ICE candidates generation [FF42+]
 // When using a system-wide proxy, it uses the proxy interface.
 // [1] https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidate
 // [2] https://wiki.mozilla.org/Media/WebRTC/Privacy
-user_pref("media.peerconnection.ice.default_address_only", true);
+// [3] https://github.com/zen-browser/desktop/issues/972
+//user_pref("media.peerconnection.ice.default_address_only", true);

 // PREF: force exclusion of private IPs from ICE candidates [FF51+]
 // [SETUP-HARDEN] This will protect your private IP even in TRUSTED scenarios after you
@@ -1112,6 +1135,53 @@ user_pref("media.peerconnection.ice.default_address_only", true);
    // Optionally, hide the setting which also disables the DRM prompt:
    //user_pref("browser.eme.ui.enabled", false);

+/******************************************************************************
+ * SECTION: JIT                                                              *
+******************************************************************************/
+// PREF: Just-In-Time Compilation
+// Around half of zero-day exploits are directly related to "just in time"
+// (JIT) compilers, and disabling that can greatly improve your protection against
+// these potential exploits.
+// [1] https://microsoftedge.github.io/edgevr/posts/Super-Duper-Secure-Mode/
+// [2] https://www.youtube.com/watch?v=i7qlZeDt9o4
+
+// PREF: JavaScript JIT
+// PREF: disable Ion and baseline JIT to harden against JS exploits
+// [NOTE] When both Ion and JIT are disabled, and trustedprincipals
+// is enabled, then Ion can still be used by extensions [4].
+// Tor Browser doesn't even ship with these disabled by default.
+// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=firefox+jit
+// [2] https://microsoftedge.github.io/edgevr/posts/Super-Duper-Secure-Mode/
+// [3] https://support.microsoft.com/en-us/microsoft-edge/enhance-your-security-on-the-web-with-microsoft-edge-b8199f13-b21b-4a08-a806-daed31a1929d
+// [4] https://bugzilla.mozilla.org/show_bug.cgi?id=1599226
+// [5] https://wiki.mozilla.org/IonMonkey
+// [6] https://github.com/arkenfox/user.js/issues/1791#issuecomment-1891273681
+//user_pref("javascript.options.baselinejit", false);
+//user_pref("javascript.options.ion", false);
+//user_pref("javascript.options.jit_trustedprincipals", false);
+
+// PREF: WebAssembly JIT [FF52+]
+// Vulnerabilities [1] have increasingly been found, including those known and fixed
+// in native programs years ago [2]. WASM has powerful low-level access, making
+// certain attacks (brute-force) and vulnerabilities more possible.
+// [STATS] ~0.2% of websites, about half of which are for cryptomining / malvertising [2][3]
+// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=wasm
+// [2] https://spectrum.ieee.org/tech-talk/telecom/security/more-worries-over-the-security-of-web-assembly
+// [3] https://www.zdnet.com/article/half-of-the-websites-using-webassembly-use-it-for-malicious-purposes
+//user_pref("javascript.options.wasm", false);
+    //user_pref("javascript.options.wasm_trustedprincipals", false);
+    //user_pref("javascript.options.wasm_baselinejit", false);
+    //user_pref("javascript.options.wasm_optimizingjit", false);
+
+// PREF: Asm.js JIT [FF22+]
+// [1] http://asmjs.org/
+// [2] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=asm.js
+// [3] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/
+//user_pref("javascript.options.asmjs", false);
+
+// PREF: Blinterp (JIT-like)
+//user_pref("javascript.options.blinterp", false);
+     
 /******************************************************************************
 * SECTION: VARIOUS                                                          *
 ******************************************************************************/
@@ -1125,40 +1195,28 @@ user_pref("media.peerconnection.ice.default_address_only", true);
 // If this is less than 5, then pasting code into the web console is disabled.
 //user_pref("devtools.selfxss.count", 5);

-// PREF: disable asm.js [FF22+]
-// [WARNING] Disabling this pref may disrupt your browsing experience.
-// [1] http://asmjs.org/
-// [2] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=asm.js
-// [3] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/
-//user_pref("javascript.options.asmjs", false);
+// PREF: disable middle click on new tab button opening URLs or searches using clipboard [FF115+]
+// Enable if you're using LINUX.
+//user_pref("browser.tabs.searchclipboardfor.middleclick", false); // DEFAULT WINDOWS macOS

-// PREF: disable Ion and baseline JIT to harden against JS exploits
-// [NOTE] When both Ion and JIT are disabled, and trustedprincipals
-// is enabled, then Ion can still be used by extensions [4].
-// [WARNING] Disabling these prefs will disrupt your browsing experience [6].
-// Tor Browser doesn't even ship with these disabled by default.
-// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=firefox+jit
-// [2] https://microsoftedge.github.io/edgevr/posts/Super-Duper-Secure-Mode/
-// [3] https://support.microsoft.com/en-us/microsoft-edge/enhance-your-security-on-the-web-with-microsoft-edge-b8199f13-b21b-4a08-a806-daed31a1929d
-// [4] https://bugzilla.mozilla.org/show_bug.cgi?id=1599226
-// [5] https://wiki.mozilla.org/IonMonkey
-// [6] https://github.com/arkenfox/user.js/issues/1791#issuecomment-1891273681
-//user_pref("javascript.options.ion", false);
-//user_pref("javascript.options.baselinejit", false);
-//user_pref("javascript.options.jit_trustedprincipals", true); // [FF75+] [HIDDEN PREF]
+// PREF: do not allow PDFs to load javascript
+// [1] https://www.reddit.com/r/uBlockOrigin/comments/mulc86/firefox_88_now_supports_javascript_in_pdf_files/

-// PREF: disable WebAssembly [FF52+]
-// [WARNING] Disabling this pref may disrupt your browsing experience.
-// Vulnerabilities [1] have increasingly been found, including those known and fixed
-// in native programs years ago [2]. WASM has powerful low-level access, making
-// certain attacks (brute-force) and vulnerabilities more possible.
-// [STATS] ~0.2% of websites, about half of which are for cryptomining / malvertising [2][3]
-// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=wasm
-// [2] https://spectrum.ieee.org/tech-talk/telecom/security/more-worries-over-the-security-of-web-assembly
-// [3] https://www.zdnet.com/article/half-of-the-websites-using-webassembly-use-it-for-malicious-purposes ***/
-//user_pref("javascript.options.wasm", false);
+// PREF: enforce PDFJS, disable PDFJS scripting
+// This setting controls if the option "Display in Firefox" is available in the setting below
+// and by effect controls whether PDFs are handled in-browser or externally ("Ask" or "Open With").
+// [WHY] pdfjs is lightweight, open source, and secure: the last exploit was June 2015 [1].
+// It doesn't break "state separation" of browser content (by not sharing with OS, independent apps).
+// It maintains disk avoidance and application data isolation. It's convenient. You can still save to disk.
+// [NOTE] JS can still force a pdf to open in-browser by bundling its own code.
+// [SETUP-CHROME] You may prefer a different pdf reader for security/workflow reasons.
+// [SETTING] General>Applications>Portable Document Format (PDF)
+// [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=pdf.js+firefox
+// [2] https://www.reddit.com/r/uBlockOrigin/comments/mulc86/firefox_88_now_supports_javascript_in_pdf_files/
+//user_pref("pdfjs.disabled", false); // [DEFAULT: false]
+user_pref("pdfjs.enableScripting", false); // [FF86+]

-/******************************************************************************
+ /******************************************************************************
 * SECTION: SAFE BROWSING (SB)                                               *
 ******************************************************************************/

@@ -1268,16 +1326,21 @@ user_pref("browser.safebrowsing.downloads.remote.enabled", false);
 // To add site exceptions: Page Info>Permissions>Receive Notifications
 // To manage site exceptions: Options>Privacy & Security>Permissions>Notifications>Settings
 // 0=always ask (default), 1=allow, 2=block
+// [1] https://easylinuxtipsproject.blogspot.com/p/security.html#ID5
+// [2] https://github.com/yokoffing/Betterfox/wiki/Common-Overrides#site-notifications
 user_pref("permissions.default.desktop-notification", 2);
   
 // PREF: default permission for Location Requests
 // 0=always ask (default), 1=allow, 2=block
 user_pref("permissions.default.geo", 2);

-// PREF: use Mozilla geolocation service instead of Google when geolocation is enabled
-// [NOTE] Mozilla's geolocation service is discontinued 12 June 2024 [1].
+// PREF: use alternative geolocation service instead of Google
+// [NOTE] Mozilla's geolocation service was discontinued in June 2024 [1].
+// BeaconDB is its replacement.
 // [1] https://github.com/mozilla/ichnaea/issues/2065
-//user_pref("geo.provider.network.url", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
+// [2] https://codeberg.org/beacondb/beacondb
+// [3] https://github.com/yokoffing/Betterfox/issues/378
+user_pref("geo.provider.network.url", "https://beacondb.net/v1/geolocate");

 // PREF: disable using the OS's geolocation service
 //user_pref("geo.provider.ms-windows-location", false); // [WINDOWS]
@@ -1307,38 +1370,20 @@ user_pref("permissions.default.geo", 2);
 //user_pref("extensions.update.enabled", false);

 // PREF: disable search engine updates (e.g. OpenSearch)
+// Prevent Firefox from adding back search engines after you removed them.
 // [NOTE] This does not affect Mozilla's built-in or Web Extension search engines.
-//user_pref("browser.search.update", false);
+user_pref("browser.search.update", false);

-// PREF: remove special permissions for certain mozilla domains
+// PREF: remove special permissions for certain mozilla domains [FF35+]
 // default = resource://app/defaults/permissions
-//user_pref("permissions.manager.defaultsUrl", "");
+user_pref("permissions.manager.defaultsUrl", "");

 // PREF: remove webchannel whitelist
-user_pref("webchannel.allowObject.urlWhitelist", "");
+//user_pref("webchannel.allowObject.urlWhitelist", ""); // [DEFAULT FF132+]

-// PREF: disable mozAddonManager Web API [FF57+]
-// [NOTE] To allow extensions to work on AMO, you also need extensions.webextensions.restrictedDomains.
-// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988
-//user_pref("privacy.resistFingerprinting.block_mozAddonManager", true); // [HIDDEN PREF FF57-108]
-
-// PREF: disable webextension restrictions on Mozilla domains
-// [NOTE] May only work with PREF: privacy.resistfingerprinting enabled and/or DEV/NIGHTLY-only?
-// [1] https://www.reddit.com/r/firefox/comments/n1lpaf/make_addons_work_on_mozilla_sites/gwdy235/?context=3
-// [2] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988
-//user_pref("extensions.webextensions.restrictedDomains", "");
-
-// PREF: do not require signing for extensions [ESR/DEV/NIGHTLY ONLY]
-// [1] https://support.mozilla.org/en-US/kb/add-on-signing-in-firefox#w_what-are-my-options-if-i-want-to-use-an-unsigned-add-on-advanced-users
-//user_pref("xpinstall.signatures.required", false);
-
-// PREF: disable Quarantined Domains [FF115+]
-// Users may see a notification when running add-ons that are not monitored by Mozilla when they visit certain sites.
-// The notification informs them that “some extensions are not allowed” and were blocked from running on that site.
-// There's no details as to which sites are affected.
-// [1] https://support.mozilla.org/en-US/kb/quarantined-domains
-// [2] https://www.ghacks.net/2023/07/04/firefox-115-new-esr-base-and-some-add-ons-may-be-blocked-from-running-on-certain-sites/
-//user_pref("extensions.quarantinedDomains.enabled", false);
+// PREF: disable metadata caching for installed add-ons by default
+// [1] https://blog.mozilla.org/addons/how-to-opt-out-of-add-on-metadata-updates/
+user_pref("extensions.getAddons.cache.enabled", false);

 /******************************************************************************
 * SECTION: TELEMETRY                                                   *
@@ -1358,7 +1403,7 @@ user_pref("datareporting.healthreport.uploadEnabled", false);
 // - If "unified" is true then "enabled" only controls whether to record extended data
 // [NOTE] "toolkit.telemetry.enabled" is now LOCKED to reflect prerelease (true) or release builds (false) [2]
 // [1] https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html
-// [2] https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5 ***/
+// [2] https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5
 user_pref("toolkit.telemetry.unified", false);
 user_pref("toolkit.telemetry.enabled", false); // see [NOTE]
 user_pref("toolkit.telemetry.server", "data:,");
@@ -1372,6 +1417,7 @@ user_pref("toolkit.telemetry.firstShutdownPing.enabled", false);

 // PREF: disable Telemetry Coverage
 // [1] https://blog.mozilla.org/data/2018/08/20/effectively-measuring-search-in-firefox/
+// [2] https://github.com/yokoffing/Betterfox/issues/443
 user_pref("toolkit.telemetry.coverage.opt-out", true); // [HIDDEN PREF]
 user_pref("toolkit.coverage.opt-out", true); // [FF64+] [HIDDEN PREF]
 user_pref("toolkit.coverage.endpoint.base", "");
@@ -1380,6 +1426,9 @@ user_pref("toolkit.coverage.endpoint.base", "");
 user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
 user_pref("browser.newtabpage.activity-stream.telemetry", false);

+// PREF: disable daily active users [FF136+]
+user_pref("datareporting.usage.uploadEnabled", false);
+
 /******************************************************************************
 * SECTION: EXPERIMENTS                                                      *
 ******************************************************************************/
@@ -1405,22 +1454,23 @@ user_pref("browser.tabs.crashReporting.sendReport", false);

 // PREF: enforce no submission of backlogged crash reports
 // [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to send backlogged crash reports
-user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false);
+//user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false); // [DEFAULT FF132+]

 /******************************************************************************
 * SECTION: DETECTION                                                        *
 ******************************************************************************/

 // PREF: disable Captive Portal detection
+// [WARNING] Do NOT use for mobile devices. May NOT be able to use Firefox on public wifi (hotels, coffee shops, etc).
 // [1] https://www.eff.org/deeplinks/2017/08/how-captive-portals-interfere-wireless-security-and-privacy
 // [2] https://wiki.mozilla.org/Necko/CaptivePortal
-user_pref("captivedetect.canonicalURL", "");
-user_pref("network.captive-portal-service.enabled", false);
+//user_pref("captivedetect.canonicalURL", "");
+//user_pref("network.captive-portal-service.enabled", false);

 // PREF: disable Network Connectivity checks
 // [WARNING] Do NOT use for mobile devices. May NOT be able to use Firefox on public wifi (hotels, coffee shops, etc).
 // [1] https://bugzilla.mozilla.org/1460537
-user_pref("network.connectivity-service.enabled", false);
+//user_pref("network.connectivity-service.enabled", false);

 // PREF: disable Privacy-Preserving Attribution [FF128+]
 // [NOTE] PPA disabled if main telemetry switches are disabled.
@@ -1431,7 +1481,6 @@ user_pref("network.connectivity-service.enabled", false);
    //user_pref("toolkit.telemetry.dap_helper", ""); // [OPTIONAL HARDENING]
    //user_pref("toolkit.telemetry.dap_leader", ""); // [OPTIONAL HARDENING]

-
 // PREF: software that continually reports what default browser you are using [WINDOWS]
 // [WARNING] Breaks "Make Default..." button in Preferences to set Firefox as the default browser [2].
 // [1] https://techdows.com/2020/04/what-is-firefox-default-browser-agent-and-how-to-disable-it.html
@@ -3,7 +3,7 @@
 * Smoothfox                                                                            *
 * "Faber est suae quisque fortunae"                                                    *
 * priority: better scrolling                                                           *
- * version: 126.1                                                                       *
+ * version: 137                                                                       *
 * url: https://github.com/yokoffing/Betterfox                                          *
 ***************************************************************************************/

@@ -17,7 +17,7 @@
 // only sharpen scrolling
 user_pref("apz.overscroll.enabled", true); // DEFAULT NON-LINUX
 user_pref("general.smoothScroll", true); // DEFAULT
-user_pref("mousewheel.min_line_scroll_amount", 10); // 10-40; adjust this number to your liking; default=5
+user_pref("mousewheel.min_line_scroll_amount", 10); // adjust this number to your liking; default=5
 user_pref("general.smoothScroll.mouseWheel.durationMinMS", 80); // default=50
 user_pref("general.smoothScroll.currentVelocityWeighting", "0.15"); // default=.25
 user_pref("general.smoothScroll.stopDecelerationWeighting", "0.6"); // default=.4
@@ -0,0 +1,299 @@
+#!/usr/bin/env python3
+
+from datetime import datetime
+from os import name, getenv
+from json import loads
+from re import compile, IGNORECASE, sub
+from pathlib import Path
+from configparser import ConfigParser
+from argparse import ArgumentParser
+from shutil import copytree, ignore_patterns
+from urllib.request import urlopen
+from subprocess import check_output
+from io import BytesIO
+from zipfile import ZipFile
+
+"""
+install(-betterfox).py
+
+Usage:
+    python install.py
+    
+
+When called without arguments, it will:
+- Backup your current firefox profile
+- Automatically download user.js from the latest Betterfox release compatible with your Firefox version into the profile
+- Apply user-overrides in the same directory 
+
+However, you can check out install.py/betterfox-install.exe --help to customise most behaviours!
+
+Limitations:
+- When using a different repositoy as a source, that repository needs to use the same releases workflow
+- Over time, the get_releases might not list older releases due to limited page size. This can be expanded down the road, though
+
+Building into an exe (on Windows):
+- pipx install pyinstaller  (note: you can try without pipx, but this didn't work for me)
+- Run:
+  - CMD:  `pyinstaller --onefile --name install-betterfox install.py && move %cd%\\dist\\install-betterfox.exe %cd% && del install-betterfox.spec && rmdir /S /Q build && rmdir dist`
+  - BASH: `pyinstaller --onefile --name install-betterfox install.py && && mv dist/install-betterfox.exe . && rm install-betterfox.spec && rm -rf ./build/ && rmdir dist`
+  (Sorry, didn't want to add a .gitignore solely for the install script)
+- Done!
+
+If there's any problems with the script, feel free to mention @Denperidge on GitHub!
+"""
+
+re_find_version = compile(r"mozilla.org/.*?/firefox/(?P<version>[\d.]*?)/", IGNORECASE)
+re_find_overrides = r"(overrides|prefs).*\n(?P<space>\n)"
+
+INSTALLATIONS_TO_CHECK = [
+    # windows
+    {
+        "command": [str(Path("C:/Program Files/Mozilla Firefox/firefox"))],
+        "root": Path(getenv("APPDATA") or "").joinpath("Mozilla/Firefox").resolve(),
+    },
+    {
+        "command": [str(Path(getenv("LOCALAPPDATA") or "").joinpath("Mozilla Firefox/firefox").resolve())],
+        "root": Path(getenv("APPDATA") or "").joinpath("Mozilla/Firefox").resolve(),
+    },
+    # linux
+    {
+        "command": ["firefox"],
+        "root": Path.home().joinpath(".mozilla/firefox").absolute(),
+    },
+    # flatpak
+    {
+        "command": ["flatpak", "run", "org.mozilla.firefox"],
+        "root": Path.home().joinpath(".var/app/org.mozilla.firefox/.mozilla/firefox").absolute(),
+    },
+    # macOS
+    {
+        "command": ["/Applications/Firefox.app/Contents/MacOS/firefox"],
+        "root": Path.home().joinpath("Library/Application Support/Firefox").absolute(),
+    },
+]
+
+
+# command is a list, eg. ["firefox"] or ["flatpak", "run", "org.mozilla.firefox"]
+def _get_firefox_version(command):
+    ver_string = check_output(command + ["--version"], encoding="UTF-8")
+    return ver_string[ver_string.rindex(" ")+1:].strip()
+
+def _get_default_firefox_version_and_root():
+    print("Searching for Firefox installation...")
+    for installation in INSTALLATIONS_TO_CHECK:
+        try:
+            print(f"  '{' '.join(installation['command'])}': ", end="")
+            version = _get_firefox_version(installation["command"])
+            print("YES")
+            print(f"Root: {installation['root']}")
+            return version, installation["root"]
+        except Exception:
+            print("no")
+            continue
+    
+    raise Exception("Firefox binary not found. Please ensure Firefox is installed and the path is correct.")
+
+def _get_default_profile_folder(firefox_root):
+    config_path = firefox_root.joinpath("profiles.ini")
+    
+    print(f"Reading {config_path}...")
+
+    config_parser = ConfigParser(strict=False)
+    config_parser.read(config_path)
+
+    path = None
+    for section in config_parser.sections():
+        if "Default" in config_parser[section]:
+            section_default_value = config_parser[section]["Default"]
+            if section_default_value:
+                print("Default detected from section: " + section)
+                # Confirm whether a 0 value is possible, keep fallback until then                 
+                if section_default_value == "0":
+                    continue
+                if section_default_value == "1":
+                    path = config_parser[section]["Path"]
+                else:
+                    path = section_default_value
+                break
+    
+    if path is not None:
+        return firefox_root.joinpath(path)
+    else:
+        raise Exception("Could not determine default Firefox profile! Exiting...")
+
+def _get_releases(repository_owner, repository_name):
+    releases = []
+    raw_releases = loads(urlopen(f"https://api.github.com/repos/{repository_owner}/{repository_name}/releases").read())
+    for raw_release in raw_releases:
+        name = raw_release["name"] or raw_release["tag_name"]  # or fixes 126.0 not being lodaded
+        body = raw_release["body"]
+
+
+        # Find which firefox releases are supported. Manual overrides for ones that don't have it written in their thing!
+        if name == "user.js v.122.1":
+            supported = ["107.0", "107.1", "108.0", "108.0.1", "108.0.2", "109.0", "109.0", "110.1", "110.0.1", "111.0", "111.0.1", "112.0", "112.0.1", "112.0.2", "113.0", "113.0.1", "113.0.2", "114.0", "114.0.1", "114.0.2", "115.0", "115.0.1", "115.0.2", "115.0.3", "115.1.0", "115.10.0", "115.11.0", "115.12.0", "115.13.0", "115.14.0", "115.15.0", "115.16.0", "115.16.1", "115.17.0", "115.2.0", "115.2.1", "115.3.0", "115.3.1", "115.4.0", "115.5.0", "115.6.0", "115.7.0", "115.8.0", "115.9.0", "115.9.1", "116.0", "116.0.1", "116.0.2", "116.0.3", "117.0", "117.0.1", "118.0", "118.0.1", "118.0.2", "119.0", "119.0.1", "120.0", "120.0.1", "121.0", "121.0.1", "122.0", "122.0.1"]
+        elif name == "user.js 116.1":
+            supported = ["116.0", "116.0.1", "116.0.2", "116.0.3"]
+        elif name == "Betterfox v.107":
+            supported = ["107.0"]
+        elif "firefox release" in body.lower():
+            trim_body = body.lower()[body.lower().index("firefox release"):]
+            supported = re_find_version.findall(trim_body)
+            if len(supported) == 0:
+                print(f"Could not parse release in '{name}'. Please post this error message on https://github.com/{repository_owner}/{repository_name}/issues")
+                continue
+        else:
+            print(f"Could not find firefox release header '{name}'. Please post this error message on https://github.com/{repository_owner}/{repository_name}/issues")
+            continue
+
+        releases.append({
+            "name": name,
+            "url": raw_release["zipball_url"],
+            "supported": supported,
+        })
+    return releases
+
+def _get_latest_compatible_release(releases):
+    for release in releases:
+        if firefox_version in release["supported"]:
+            return release
+    return None
+
+def backup_profile(src):
+    dest = f"{src}-backup-{datetime.today().strftime('%Y-%m-%d-%H-%M-%S')}"
+    
+    copytree(src, dest, ignore=ignore_patterns("*lock"))
+    print("Backed up profile to " + dest)
+
+
+def download_betterfox(url):
+    data = BytesIO()
+    data.write(urlopen(url).read())
+    return data  
+
+def extract_betterfox(data, profile_folder):
+    zipfile = ZipFile(data)
+    userjs_zipinfo = None
+    for file in zipfile.filelist:
+        if "/zen/" in file.filename and not args.zen:
+            continue
+        if file.filename.endswith("user.js"):
+            userjs_zipinfo = file
+            userjs_zipinfo.filename = Path(userjs_zipinfo.filename).name
+
+    if not userjs_zipinfo:
+        raise BaseException("Could not find user.js!")
+    
+    return zipfile.extract(userjs_zipinfo, profile_folder)
+
+
+def list_releases(releases, only_supported=False, add_index=False):
+    print()
+    print(f"Listing {'compatible' if only_supported else 'all'} Betterfox releases:")
+    if only_supported:
+        print("Use --list-all to view all available releases")
+    else:
+        print(f"Releases marked with '> ' are documented to be compatible with your Firefox version ({firefox_version})")
+    print()
+
+    i = 0
+    for release in releases:
+        supported = firefox_version in release["supported"]
+        if not only_supported or (only_supported and supported):
+            print(f"{f'[{i}]' if add_index else ''}{'> ' if supported else '  '}{release['name'].ljust(20)}\t\t\tSupported: {','.join(release['supported'])}")
+        i+=1
+
+def _press_enter_to_exit(args):
+    if not args.no_wait_for_exit:
+        input("Press ENTER to exit...")
+
+if __name__ == "__main__":
+    firefox_version, firefox_root = _get_default_firefox_version_and_root()
+
+    default_profile_folder = _get_default_profile_folder(firefox_root)
+
+    argparser = ArgumentParser(
+
+    )
+    argparser.add_argument("--overrides", "-o", default=default_profile_folder.joinpath("user-overrides.js"), help="if the provided file exists, add overrides to user.js. Defaults to " + str(default_profile_folder.joinpath("user-overrides.js"))),
+    argparser.add_argument("--zen", "-z", action="store_true", default=False, help="Install user.js for the Zen browser instead. Defaults to False"),
+    
+    
+    advanced = argparser.add_argument_group("Advanced")
+    advanced.add_argument("--betterfox-version", "-bv", default=None, help=f"Which version of Betterfox to install. Defaults to the latest compatible release for your installed Firefox version")
+    advanced.add_argument("--profile-dir", "-p", "-pd", default=default_profile_folder, help=f"Which profile dir to install user.js in. Defaults to {default_profile_folder}")
+    advanced.add_argument("--repository-owner", "-ro", default="yokoffing", help="owner of the Betterfox repository. Defaults to yokoffing")
+    advanced.add_argument("--repository-name", "-rn", default="Betterfox", help="name of the Betterfox repository. Defaults to Betterfox")
+    
+    disable = argparser.add_argument_group("Disable functionality")
+    disable.add_argument("--no-backup", "-nb", action="store_true", default=False, help="disable backup of current profile (not recommended)"),
+    disable.add_argument("--no-install", "-ni", action="store_true", default=False, help="don't install Betterfox"),
+    
+    modes = argparser.add_mutually_exclusive_group()
+    modes.add_argument("--list", action="store_true", default=False, help=f"List all Betterfox releases compatible with your version of Firefox ({firefox_version})")
+    modes.add_argument("--list-all", action="store_true", default=False, help=f"List all Betterfox releases")
+    modes.add_argument("--interactive", "-i", action="store_true", default=False, help=f"Interactively select Betterfox version")
+
+    behaviour = argparser.add_argument_group("Script behaviour")
+    behaviour.add_argument("--no-wait-for-exit", "-nwfe", action="store_true", default=False, help="Disable 'Press ENTER to exit...' and exit immediately"),
+
+    args = argparser.parse_args()
+
+    releases = _get_releases(args.repository_owner, args.repository_name)
+    selected_release = None
+
+    if args.list or args.list_all:
+        list_releases(releases, args.list)
+        _press_enter_to_exit(args)
+        exit()
+
+    if not args.no_backup:
+        backup_profile(args.profile_dir)
+
+    if args.betterfox_version:
+        # If not None AND not string, default value has been used
+        if not isinstance(args.betterfox_version, str):
+            selected_release = args.betterfox_version
+            print(f"Using latest compatible Betterfox version ({selected_release['name']})...")
+        # If string has been passed
+        else:
+            selected_release = next(rel for rel in releases if rel['name'] == args.betterfox_version)
+            print(f"Using manually selected Betterfox version ({selected_release['name']})")
+    
+    if not args.betterfox_version:
+        selected_release = _get_latest_compatible_release(releases)
+        
+    if args.interactive or not selected_release:
+        if not selected_release:
+            print("Could not find a compatible Betterfox version for your Firefox installation.")
+        
+        list_releases(releases, False, True)
+        selection = int(input(f"Select Betterfox version, or press enter without typing a number to cancel [0-{len(releases) - 1}]: "))
+
+        selected_release = releases[selection]
+
+
+
+    if not args.no_install:
+        userjs_path = extract_betterfox(
+            download_betterfox(selected_release["url"]),
+            args.profile_dir
+        )
+        print(f"Installed user.js to {userjs_path} !")
+
+
+        if Path(args.overrides).exists():
+            print("Found overrides at " + str(args.overrides))
+
+            with open(str(args.overrides), "r", encoding="utf-8") as overrides_file:
+                overrides = overrides_file.read()
+            with open(userjs_path, "r", encoding="utf-8") as userjs_file:
+                old_content = userjs_file.read()
+                new_content = sub(re_find_overrides, "\n" + overrides + "\n", old_content, count=1, flags=IGNORECASE)
+            with open(userjs_path, "w", encoding="utf-8") as userjs_file:
+                userjs_file.write(new_content)
+        else:
+            print(f"Found no overrides in {args.overrides}")
+
+    _press_enter_to_exit(args)
+
@@ -19,26 +19,29 @@

 /** FASTFOX ***/
 user_pref("browser.sessionstore.restore_pinned_tabs_on_demand", true);
-user_pref("browser.sessionhistory.max_total_viewers", 4); // only remember # of pages in Back-Forward cache
-user_pref("browser.cache.disk.enable", false); // disable disk cache
+
+// SPECULATIVE LOADING WITHOUT PREDICTOR
+user_pref("network.http.speculative-parallel-limit", 20);
+//user_pref("network.dns.disablePrefetch", false);
+//user_pref("network.dns.disablePrefetchFromHTTPS", false);
+//user_pref("dom.prefetch_dns_for_anchor_https_document", true); 
+user_pref("browser.urlbar.speculativeConnect.enabled", true);
+user_pref("browser.places.speculativeConnect.enabled", true);
+user_pref("network.prefetch-next", true);
 user_pref("network.http.max-persistent-connections-per-server", 20); // increase download connections
-user_pref("network.buffer.cache.size", 262144); // default=32768; [WARNING] Cannot open HTML files bigger than 4 MB if changed
-user_pref("network.buffer.cache.count", 128); // default=24; use bigger packets

 /** SECUREFOX ***/
-//user_pref("urlclassifier.features.socialtracking.skipURLs", "*.twitter.com, *.twimg.com"); // removed *.instagram.com
+user_pref("privacy.trackingprotection.allow_list.convenience.enabled", false); // disable Strict allowlist of convenience features
 user_pref("signon.rememberSignons", false); // disable password manager
 user_pref("extensions.formautofill.addresses.enabled", false); // disable address manager
 user_pref("extensions.formautofill.creditCards.enabled", false); // disable credit card manager
+user_pref("browser.urlbar.suggest.recentsearches", false);  // unselect "Show recent searches" for clean UI
 user_pref("browser.urlbar.showSearchSuggestionsFirst", false); // unselect "Show search suggestions ahead of browsing history in address bar results" for clean UI
-//user_pref("browser.urlbar.suggest.trending", false); // FF119+ disable showing trending searches; unselect for clean UI
 //user_pref("browser.urlbar.groupLabels.enabled", false); // hide Firefox Suggest label in URL dropdown box
 user_pref("signon.management.page.breach-alerts.enabled", false); // extra hardening
 user_pref("signon.autofillForms", false); // unselect "Autofill logins and passwords" for clean UI
 user_pref("signon.generation.enabled", false); // unselect "Suggest and generate strong passwords" for clean UI
 user_pref("signon.firefoxRelay.feature", ""); // unselect suggestions from Firefox Relay for clean UI
-//user_pref("privacy.sanitize.sanitizeOnShutdown", true); // clear browsing data on shutdown
-//user_pref("privacy.clearOnShutdown.offlineApps", true); // clear Site Data on shutdown
 user_pref("browser.safebrowsing.downloads.enabled", false); // deny SB to scan downloads to identify suspicious files; local checks only
 user_pref("browser.safebrowsing.downloads.remote.url", ""); // enforce no remote checks for downloads by SB
 user_pref("browser.safebrowsing.downloads.remote.block_potentially_unwanted", false); // clean up UI; not needed in user.js if remote downloads are disabled
@@ -51,10 +54,14 @@ user_pref("identity.fxaccounts.enabled", false); // disable Firefox Sync
 user_pref("browser.firefox-view.feature-tour", "{\"screen\":\"\",\"complete\":true}"); // disable the Firefox View tour from popping up for new profiles
 user_pref("accessibility.force_disabled", 1); // disable Accessibility features
 user_pref("security.cert_pinning.enforcement_level", 2); // strict public key pinning
+user_pref("captivedetect.canonicalURL", ""); // disable captive portal detection
+user_pref("network.captive-portal-service.enabled", false); // disable captive portal detection
+user_pref("network.connectivity-service.enabled", false); // disable captive portal detection
+user_pref("browser.download.enableDeletePrivate", true); // Delete files downloaded in private browsing when all private windows are closed
+user_pref("browser.download.deletePrivateChosen", true); // Delete files downloaded in private browsing when all private windows are closed
+user_pref("browser.download.deletePrivate", true); // Delete files downloaded in private browsing when all private windows are closed

 /** PESKYFOX ***/
-user_pref("cookiebanners.service.mode", 0); // disable for performance since I'm using Easylist Cookie
-user_pref("cookiebanners.service.mode.privateBrowsing", 0); // disable for performance since I'm using Easylist Cookie
 user_pref("devtools.accessibility.enabled", false); // removes un-needed "Inspect Accessibility Properties" on right-click
 user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); // Settings>Home>Firefox Home Content>Recent Activity>Shortcuts>Sponsored shortcuts
 user_pref("browser.newtabpage.activity-stream.showSponsored", false); // Settings>Home>Firefox Home Content>Recent Activity>Recommended by Pocket>Sponsored Stories  
@@ -77,13 +84,13 @@ user_pref("browser.bookmarks.max_backups", 0); // minimize disk use; manually ba
 user_pref("view_source.wrap_long_lines", true);  // wrap source lines
 user_pref("devtools.debugger.ui.editor-wrapping", true);  // wrap lines in devtools
 user_pref("browser.zoom.full", false); // text-only zoom, not all elements on page
-user_pref("pdfjs.sidebarViewOnLoad", 2); // force showing of Table of Contents in sidebar for PDFs (if available)
+//user_pref("pdfjs.sidebarViewOnLoad", 2); // force showing of Table of Contents in sidebar for PDFs (if available)
 user_pref("layout.word_select.eat_space_to_next_word", false); // do not select the space next to a word when selecting a word
 //user_pref("browser.tabs.loadInBackground", false); // CTRL+SHIFT+CLICK for background tabs; Settings>General>Tabs>When you open a link, image or media in a new tab, switch to it immediately
 user_pref("browser.tabs.loadBookmarksInTabs", true); // force bookmarks to open in a new tab, not the current tab
 user_pref("ui.key.menuAccessKey", 0); // remove underlined characters from various settings
 user_pref("general.autoScroll", false); // disable unintentional behavior for middle click
-user_pref("ui.SpellCheckerUnderlineStyle", 1); // dots for spell check errors
+user_pref("ui.SpellCheckerUnderlineStyle", 1); // [HIDDEN] dots for spell check errors
 user_pref("media.videocontrols.picture-in-picture.display-text-tracks.size", "small"); // PiP
 user_pref("media.videocontrols.picture-in-picture.urlbar-button.enabled", false); // PiP in address bar
 user_pref("reader.parse-on-load.enabled", false); // disable reader mode
@@ -94,44 +101,46 @@ user_pref("reader.parse-on-load.enabled", false); // disable reader mode
 user_pref("privacy.userContext.enabled", false); // disable Containers functionality
 user_pref("browser.crashReports.unsubmittedCheck.enabled", false); // true by default on NIGHTLY
 //user_pref("xpinstall.signatures.required", false); // [ESR/DEV/NIGHTLY]
+//user_pref("browser.urlbar.suggest.trending", false); // FF119+ disable showing trending searches; unselect for clean UI
 //user_pref("browser.urlbar.suggest.quickactions", false); // Quick actions; hide URL bar dropdown suggestions
 //user_pref("browser.urlbar.suggest.clipboard", false); // Clipboard; hide URL bar dropdown suggestions

 /** DELETE IF NOT WINDOWS DESKTOP ***/
 user_pref("network.trr.mode", 3); // enable TRR (without System fallback)
-user_pref("gfx.canvas.accelerated", true); // DEFAULT NON-WINDOWS; enable if not using an integrated GPU
-user_pref("browser.startup.preXulSkeletonUI", false); // WINDOWS
+//user_pref("browser.startup.preXulSkeletonUI", false); // WINDOWS
 user_pref("default-browser-agent.enabled", false); // deny Mozilla monitoring default browser (breaks "Make Default" button)
-user_pref("geo.provider.ms-windows-location", false); //  [WINDOWS]
+user_pref("geo.provider.ms-windows-location", false); // [WINDOWS]
 user_pref("pdfjs.defaultZoomValue", "125"); // alt=page-width; PDF zoom level
 user_pref("gfx.font_rendering.cleartype_params.rendering_mode", 5);
 user_pref("gfx.font_rendering.cleartype_params.cleartype_level", 100);
 user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_for_families", "");
-user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_max_size", 6);
 user_pref("gfx.font_rendering.directwrite.use_gdi_table_loading", false);
-//user_pref("gfx.font_rendering.cleartype_params.gamma", 898); // 1000-2200; https://www.reddit.com/r/firefox/comments/10ed7o2/comment/j4qar9y/
+//user_pref("gfx.font_rendering.cleartype_params.enhanced_contrast", 100);
 //user_pref("font.name.serif.x-western", "Roboto Slab"); // serif font
 //user_pref("font.name.sans-serif.x-western", "Roboto"); // sans-serif font
 //user_pref("font.name.monospace.x-western", "Fira Code"); // monospace font

 /** DELETE IF NOT ENTERPRISE WINDOWS LAPTOP ***/
-//user_pref("network.trr.mode", 3); // enable TRR (without System fallback)
+user_pref("urlclassifier.trackingSkipURLs", ""); // do not allow embedded tweets, Instagram, Reddit, and Tiktok posts
+user_pref("urlclassifier.features.socialtracking.skipURLs", ""); // do not allow embedded tweets, Instagram, Reddit, and Tiktok posts
+user_pref("browser.search.suggest.enabled", true); // search suggestions
+user_pref("browser.urlbar.showSearchSuggestionsFirst", true); // Show search suggestions ahead of browsing history in address bar results
+//user_pref("network.connectivity-service.enabled", true); // public wifi
+//user_pref("network.trr.confirmationNS", "example.com"); // TRR confirmation request
+//user_pref("network.trr.mode", 2); // enable TRR (without System fallback)
 //user_pref("browser.startup.preXulSkeletonUI", false); // WINDOWS
 user_pref("gfx.font_rendering.cleartype_params.rendering_mode", 5);
 user_pref("gfx.font_rendering.cleartype_params.cleartype_level", 100);
 user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_for_families", "");
-user_pref("gfx.font_rendering.cleartype_params.force_gdi_classic_max_size", 6);
 user_pref("gfx.font_rendering.directwrite.use_gdi_table_loading", false);
+user_pref("gfx.font_rendering.cleartype_params.enhanced_contrast", 100);
 user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", false); // no need for userChrome
-user_pref("browser.urlbar.suggest.history", true); // Browsing history
-user_pref("browser.urlbar.suggest.bookmark", true); // Bookmarks
+//user_pref("browser.urlbar.suggest.history", true); // Browsing history
+//user_pref("browser.urlbar.suggest.bookmark", true); // Bookmarks
 //user_pref("browser.urlbar.suggest.openpage", true); // Open tabs
 //user_pref("browser.urlbar.suggest.topsites", true); // Shortcuts
-//user_pref("browser.download.folderList", 1); // 0=desktop, 1=downloads, 2=last used
-//user_pref("browser.download.useDownloadDir", false); // ask where to download

 /** DELETE IF NOT macOS LAPTOP ***/
-//user_pref("browser.download.folderList", 1); // 0=desktop, 1=downloads, 2=last used
 user_pref("network.trr.mode", 2); // enable TRR (with System fallback)
 user_pref("network.trr.max-fails", 5); // lower max attempts to use DoH
 user_pref("geo.provider.use_corelocation", false); // geolocation [MAC]
@@ -140,13 +149,9 @@ user_pref("app.update.auto", false); // disable auto-installing Firefox updates
 //user_pref("font.name.monospace.x-western", "SF Mono"); // monospace font

 /** DELETE IF NOT LINUX LAPTOP ***/
-//user_pref("browser.download.folderList", 1); // 0=desktop, 1=downloads, 2=last used
-//user_pref(layers.acceleration.force-enable", true); // needed in 2024?
-//user_pref("gfx.webrender.software.opengl", true); // needed?
-user_pref("browser.low_commit_space_threshold_mb", 13107); // determine when tabs unload
-user_pref("browser.low_commit_space_threshold_percent", 20); // determine when tabs unload (percentage)
-//user_pref("middlemouse.contentLoadURL", false); // disable middle mouse click opening links from clipboard
 user_pref("network.trr.mode", 2); // enable TRR (with System fallback)
 user_pref("network.trr.max-fails", 5); // lower max attempts to use DoH
 user_pref("geo.provider.use_geoclue", false); // [LINUX]
 user_pref("pdfjs.defaultZoomValue", "page-width"); // PDF zoom level
+
+
@@ -10,7 +10,7 @@
 /****************************************************************************
 * Betterfox                                                                *
 * "Ad meliora"                                                             *
- * version: 129                                                             *
+ * version: 146                                                             *
 * url: https://github.com/yokoffing/Betterfox                              *
 ****************************************************************************/

@@ -18,61 +18,64 @@
 * SECTION: FASTFOX                                                         *
 ****************************************************************************/
 /** GENERAL ***/
-user_pref("content.notify.interval", 100000);
+user_pref("gfx.content.skia-font-cache-size", 32);

 /** GFX ***/
-user_pref("gfx.canvas.accelerated.cache-items", 4096);
-user_pref("gfx.canvas.accelerated.cache-size", 512);
-user_pref("gfx.content.skia-font-cache-size", 20);
+user_pref("gfx.webrender.layer-compositor", true);
+user_pref("gfx.canvas.accelerated.cache-items", 32768);
+user_pref("gfx.canvas.accelerated.cache-size", 4096);
+user_pref("webgl.max-size", 16384);

 /** DISK CACHE ***/
-user_pref("browser.cache.jsbc_compression_level", 3);
+user_pref("browser.cache.disk.enable", false);
+
+/** MEMORY CACHE ***/
+user_pref("browser.cache.memory.capacity", 131072);
+user_pref("browser.cache.memory.max_entry_size", 20480);
+user_pref("browser.sessionhistory.max_total_viewers", 4);
+user_pref("browser.sessionstore.max_tabs_undo", 10);

 /** MEDIA CACHE ***/
-user_pref("media.memory_cache_max_size", 65536);
-user_pref("media.cache_readahead_limit", 7200);
-user_pref("media.cache_resume_threshold", 3600);
+user_pref("media.memory_cache_max_size", 262144);
+user_pref("media.memory_caches_combined_limit_kb", 1048576);
+user_pref("media.cache_readahead_limit", 600);
+user_pref("media.cache_resume_threshold", 300);

 /** IMAGE CACHE ***/
-user_pref("image.mem.decode_bytes_at_a_time", 32768);
+user_pref("image.cache.size", 10485760);
+user_pref("image.mem.decode_bytes_at_a_time", 65536);

 /** NETWORK ***/
 user_pref("network.http.max-connections", 1800);
 user_pref("network.http.max-persistent-connections-per-server", 10);
 user_pref("network.http.max-urgent-start-excessive-connections-per-host", 5);
+user_pref("network.http.request.max-start-delay", 5);
 user_pref("network.http.pacing.requests.enabled", false);
+user_pref("network.dnsCacheEntries", 10000);
 user_pref("network.dnsCacheExpiration", 3600);
 user_pref("network.ssl_tokens_cache_capacity", 10240);

 /** SPECULATIVE LOADING ***/
+user_pref("network.http.speculative-parallel-limit", 0);
 user_pref("network.dns.disablePrefetch", true);
 user_pref("network.dns.disablePrefetchFromHTTPS", true);
+user_pref("browser.urlbar.speculativeConnect.enabled", false);
+user_pref("browser.places.speculativeConnect.enabled", false);
 user_pref("network.prefetch-next", false);
-user_pref("network.predictor.enabled", false);
-user_pref("network.predictor.enable-prefetch", false);
-
-/** EXPERIMENTAL ***/
-user_pref("layout.css.grid-template-masonry-value.enabled", true);
-user_pref("dom.enable_web_task_scheduling", true);
-user_pref("dom.security.sanitizer.enabled", true);

 /****************************************************************************
 * SECTION: SECUREFOX                                                       *
 ****************************************************************************/
 /** TRACKING PROTECTION ***/
 user_pref("browser.contentblocking.category", "strict");
-user_pref("urlclassifier.trackingSkipURLs", "*.reddit.com, *.twitter.com, *.twimg.com, *.tiktok.com");
-user_pref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.twitter.com, *.twimg.com");
-user_pref("network.cookie.sameSite.noneRequiresSecure", true);
 user_pref("browser.download.start_downloads_in_tmp_dir", true);
-user_pref("browser.helperApps.deleteTempFileOnExit", true);
 user_pref("browser.uitour.enabled", false);
 user_pref("privacy.globalprivacycontrol.enabled", true);

 /** OCSP & CERTS / HPKP ***/
 user_pref("security.OCSP.enabled", 0);
-user_pref("security.remote_settings.crlite_filters.enabled", true);
-user_pref("security.pki.crlite_mode", 2);
+user_pref("privacy.antitracking.isolateContentScriptResources", true);
+user_pref("security.csp.reporting.enabled", false);

 /** SSL / TLS ***/
 user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
@@ -85,24 +88,21 @@ user_pref("browser.sessionstore.interval", 60000);

 /** SHUTDOWN & SANITIZING ***/
 user_pref("privacy.history.custom", true);
+user_pref("browser.privatebrowsing.resetPBM.enabled", true);

 /** SEARCH / URL BAR ***/
 user_pref("browser.urlbar.trimHttps", true);
 user_pref("browser.urlbar.untrimOnUserInteraction.featureGate", true);
 user_pref("browser.search.separatePrivateDefault.ui.enabled", true);
-user_pref("browser.urlbar.update2.engineAliasRefresh", true);
 user_pref("browser.search.suggest.enabled", false);
 user_pref("browser.urlbar.quicksuggest.enabled", false);
-user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false);
-user_pref("browser.urlbar.suggest.quicksuggest.nonsponsored", false);
 user_pref("browser.urlbar.groupLabels.enabled", false);
 user_pref("browser.formfill.enable", false);
-user_pref("security.insecure_connection_text.enabled", true);
-user_pref("security.insecure_connection_text.pbmode.enabled", true);
 user_pref("network.IDN_show_punycode", true);

-/** HTTPS-FIRST POLICY ***/
-user_pref("dom.security.https_first", true);
+/** HTTPS-ONLY MODE ***/
+user_pref("dom.security.https_only_mode", true);
+user_pref("dom.security.https_only_mode_error_page_user_suggestions", true);

 /** PASSWORDS ***/
 user_pref("signon.formlessCapture.enabled", false);
@@ -110,10 +110,8 @@ user_pref("signon.privateBrowsingCapture.enabled", false);
 user_pref("network.auth.subresource-http-auth-allow", 1);
 user_pref("editor.truncate_user_pastes", false);

-/** MIXED CONTENT + CROSS-SITE ***/
-user_pref("security.mixed_content.block_display_content", true);
-user_pref("pdfjs.enableScripting", false);
-user_pref("extensions.postDownloadThirdPartyPrompt", false);
+/** EXTENSIONS ***/
+user_pref("extensions.enabledScopes", 5);

 /** HEADERS / REFERERS ***/
 user_pref("network.http.referer.XOriginTrimmingPolicy", 2);
@@ -121,9 +119,8 @@ user_pref("network.http.referer.XOriginTrimmingPolicy", 2);
 /** CONTAINERS ***/
 user_pref("privacy.userContext.ui.enabled", true);

-/** WEBRTC ***/
-user_pref("media.peerconnection.ice.proxy_only_if_behind_proxy", true);
-user_pref("media.peerconnection.ice.default_address_only", true);
+/** VARIOUS ***/
+user_pref("pdfjs.enableScripting", false);

 /** SAFE BROWSING ***/
 user_pref("browser.safebrowsing.downloads.remote.enabled", false);
@@ -131,8 +128,10 @@ user_pref("browser.safebrowsing.downloads.remote.enabled", false);
 /** MOZILLA ***/
 user_pref("permissions.default.desktop-notification", 2);
 user_pref("permissions.default.geo", 2);
+user_pref("geo.provider.network.url", "https://beacondb.net/v1/geolocate");
+user_pref("browser.search.update", false);
 user_pref("permissions.manager.defaultsUrl", "");
-user_pref("webchannel.allowObject.urlWhitelist", "");
+user_pref("extensions.getAddons.cache.enabled", false);

 /** TELEMETRY ***/
 user_pref("datareporting.policy.dataSubmissionEnabled", false);
@@ -151,6 +150,7 @@ user_pref("toolkit.coverage.opt-out", true);
 user_pref("toolkit.coverage.endpoint.base", "");
 user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
 user_pref("browser.newtabpage.activity-stream.telemetry", false);
+user_pref("datareporting.usage.uploadEnabled", false);

 /** EXPERIMENTS ***/
 user_pref("app.shield.optoutstudies.enabled", false);
@@ -160,18 +160,11 @@ user_pref("app.normandy.api_url", "");
 /** CRASH REPORTS ***/
 user_pref("breakpad.reportURL", "");
 user_pref("browser.tabs.crashReporting.sendReport", false);
-user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false);
-
-/** DETECTION ***/
-user_pref("captivedetect.canonicalURL", "");
-user_pref("network.captive-portal-service.enabled", false);
-user_pref("network.connectivity-service.enabled", false);

 /****************************************************************************
 * SECTION: PESKYFOX                                                        *
 ****************************************************************************/
 /** MOZILLA UI ***/
-user_pref("browser.privatebrowsing.vpnpromourl", "");
 user_pref("extensions.getAddons.showPane", false);
 user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);
 user_pref("browser.discovery.enabled", false);
@@ -180,41 +173,36 @@ user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", fa
 user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false);
 user_pref("browser.preferences.moreFromMozilla", false);
 user_pref("browser.aboutConfig.showWarning", false);
+user_pref("browser.startup.homepage_override.mstone", "ignore");
 user_pref("browser.aboutwelcome.enabled", false);
-user_pref("browser.tabs.tabmanager.enabled", false);
 user_pref("browser.profiles.enabled", true);

 /** THEME ADJUSTMENTS ***/
 user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true);
 user_pref("browser.compactmode.show", true);
-user_pref("browser.display.focus_ring_on_anything", true);
-user_pref("browser.display.focus_ring_style", 0);
-user_pref("browser.display.focus_ring_width", 0);
-user_pref("layout.css.prefers-color-scheme.content-override", 2);
 user_pref("browser.privateWindowSeparation.enabled", false); // WINDOWS
-user_pref("browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled", true);

-/** COOKIE BANNER HANDLING ***/
-user_pref("cookiebanners.service.mode", 1);
-user_pref("cookiebanners.service.mode.privateBrowsing", 1);
+/** AI ***/
+user_pref("browser.ml.enable", false);
+user_pref("browser.ml.chat.enabled", false);
+user_pref("browser.ml.chat.menu", false);
+user_pref("browser.tabs.groups.smart.enabled", false);
+user_pref("browser.ml.linkPreview.enabled", false);

 /** FULLSCREEN NOTICE ***/
 user_pref("full-screen-api.transition-duration.enter", "0 0");
 user_pref("full-screen-api.transition-duration.leave", "0 0");
-user_pref("full-screen-api.warning.delay", -1);
 user_pref("full-screen-api.warning.timeout", 0);

 /** URL BAR ***/
-user_pref("browser.urlbar.suggest.calculator", true);
-user_pref("browser.urlbar.unitConversion.enabled", true);
 user_pref("browser.urlbar.trending.featureGate", false);

 /** NEW TAB PAGE ***/
-user_pref("browser.newtabpage.activity-stream.feeds.topsites", false);
+user_pref("browser.newtabpage.activity-stream.default.sites", "");
+user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false);
 user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
-
-/** POCKET ***/
-user_pref("extensions.pocket.enabled", false);
+user_pref("browser.newtabpage.activity-stream.showSponsored", false);
+user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false);

 /** DOWNLOADS ***/
 user_pref("browser.download.manager.addToRecentDocs", false);
@@ -235,12 +223,16 @@ user_pref("layout.word_select.eat_space_to_next_word", false);
 // visit https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening
 // Enter your personal overrides below this line:

+
+
 /****************************************************************************
 * SECTION: SMOOTHFOX                                                       *
 ****************************************************************************/
 // visit https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js
 // Enter your scrolling overrides below this line:

+
+
 /****************************************************************************
 * END: BETTERFOX                                                           *
 ****************************************************************************/
@@ -0,0 +1,129 @@
+//
+/* You may copy+paste this file and use it as it is.
+ *
+ * If you make changes to your about:config while the program is running, the
+ * changes will be overwritten by the user.js when the application restarts.
+ *
+ * To make lasting changes to preferences, you will have to edit the user.js.
+ */
+
+/****************************************************************************
+ * BetterZen                                                                *
+ * "Ex nihilo nihil fit"                                                    *
+ * version: 142                                                             *
+ * url: https://github.com/yokoffing/Betterfox                              *
+****************************************************************************/
+
+/****************************************************************************
+ * SECTION: FASTFOX                                                         *
+****************************************************************************/
+/** GFX ***/
+user_pref("gfx.canvas.accelerated.cache-size", 512);
+
+/** DISK CACHE ***/
+user_pref("browser.cache.disk.enable", false);
+
+/** NETWORK ***/
+user_pref("network.http.pacing.requests.enabled", false);
+
+/** SPECULATIVE LOADING ***/
+user_pref("network.dns.disablePrefetch", true);
+user_pref("network.dns.disablePrefetchFromHTTPS", true);
+user_pref("network.prefetch-next", false);
+user_pref("network.predictor.enabled", false);
+user_pref("network.predictor.enable-prefetch", false);
+
+/****************************************************************************
+ * SECTION: SECUREFOX                                                       *
+****************************************************************************/
+/** TRACKING PROTECTION ***/
+user_pref("browser.contentblocking.category", "strict");
+user_pref("privacy.trackingprotection.allow_list.baseline.enabled", true);
+user_pref("privacy.trackingprotection.allow_list.convenience.enabled", true);
+user_pref("browser.download.start_downloads_in_tmp_dir", true);
+
+/** OCSP & CERTS / HPKP ***/
+user_pref("security.OCSP.enabled", 0);
+user_pref("security.pki.crlite_mode", 2);
+
+/** DISK AVOIDANCE ***/
+user_pref("browser.sessionstore.interval", 60000);
+
+/** SHUTDOWN & SANITIZING ***/
+user_pref("browser.privatebrowsing.resetPBM.enabled", true);
+user_pref("privacy.history.custom", true);
+
+/** SEARCH / URL BAR ***/
+user_pref("browser.urlbar.quicksuggest.enabled", false);
+
+/** PASSWORDS ***/
+user_pref("signon.formlessCapture.enabled", false);
+user_pref("signon.privateBrowsingCapture.enabled", false);
+user_pref("network.auth.subresource-http-auth-allow", 1);
+user_pref("editor.truncate_user_pastes", false);
+
+/** HEADERS / REFERERS ***/
+user_pref("network.http.referer.XOriginTrimmingPolicy", 2);
+
+/** SAFE BROWSING ***/
+user_pref("browser.safebrowsing.downloads.remote.enabled", false);
+
+/** MOZILLA ***/
+user_pref("permissions.default.desktop-notification", 2);
+user_pref("permissions.default.geo", 2);
+user_pref("geo.provider.network.url", "https://beacondb.net/v1/geolocate");
+user_pref("browser.search.update", false);
+user_pref("permissions.manager.defaultsUrl", "");
+
+/****************************************************************************
+ * SECTION: PESKYFOX                                                        *
+****************************************************************************/
+/** MOZILLA UI ***/
+user_pref("browser.shell.checkDefaultBrowser", false);
+
+/** NEW TAB PAGE ***/
+user_pref("browser.newtabpage.activity-stream.default.sites", "");
+
+/** URL BAR ***/
+user_pref("dom.text_fragments.create_text_fragment.enabled", true);
+
+/****************************************************************************
+ * START: ZEN-SPECIFIC OVERRIDES                                            *
+****************************************************************************/
+// Remove the slashes to enable the prefs
+
+// PREF: re-enable Windows efficiency mode
+//user_pref("dom.ipc.processPriorityManager.backgroundUsesEcoQoS", true);
+
+// PREF: disable new tab preload since they are off by default
+//user_pref("browser.newtab.preload", false);
+
+// PREF: show Enhance Tracking Protection shield in URL bar
+// Currently bugged if you click to view what's blocked
+//user_pref("zen.urlbar.show-protections-icon", true);
+
+// PREF: Disable the Picture in picture pop-out when changing tabs
+//user_pref("media.videocontrols.picture-in-picture.enable-when-switching-tabs.enabled", false);
+
+/****************************************************************************
+ * START: MY OVERRIDES                                                      *
+****************************************************************************/
+// visit https://github.com/yokoffing/Betterfox/wiki/Common-Overrides
+// visit https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening
+// Enter your personal overrides below this line:
+
+
+/****************************************************************************
+ * SECTION: SMOOTHFOX                                                       *
+****************************************************************************/
+// Reset Zen's custom scrolling prefs to their Firefox defaults before making changes!
+// [1] Zen changes: https://github.com/zen-browser/desktop/blob/3932ec21f5661440c4b20796f90341a6ac725818/src/browser/app/profile/zen-browser.js#L297-L312
+// [2] Firefox defaults: https://searchfox.org/mozilla-release/source/modules/libpref/init/StaticPrefList.yaml
+// Then apply an example from Smoothfox
+// [3] https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js
+// Enter your scrolling overrides below this line:
+
+
+/****************************************************************************
+ * END: BETTERFOX                                                           *
+****************************************************************************/
Author	SHA1	Message	Date
yokoffing	eee6e58b2b	146.0 (#447 )	2025-12-13 16:59:25 -05:00
NewKidOnTheBlock	3b159ac8fb	Removed outdated VPN Promo & Quickactions lines (#442 )	2025-10-28 23:00:52 -04:00
balacij	9d7e6acb9c	install.py: add support for macOS (#434 )	2025-10-22 20:54:50 -04:00
NewKidOnTheBlock	9f3e90876f	Remove outdated Pocket line (#439 ) As described in issue #438	2025-10-22 20:32:40 -04:00
yokoffing	9efeb601f6	144.0 (#429 )	2025-10-18 21:03:42 -04:00
Vadim Zyamalov	7b3cee24cc	Allow Firefox installed as non-admin (#423 )	2025-09-05 14:53:22 -04:00
yokoffing	2d81cd4094	142.0 (#420 )	2025-08-20 17:21:59 -04:00
Cat	ad9a3b4693	install.py: BetterZen compatibility (#418 )	2025-08-20 14:52:16 -04:00
yokoffing	9727810114	140.0 (#404 )	2025-07-22 12:28:37 -04:00
sykoram	e66de491ac	fix install.py (quotes in f-strings) (#405 )	2025-06-21 00:29:56 -04:00
mr. m	82553f0167	Remove experiemental rounded flag (#403 )	2025-06-16 16:45:55 -04:00
yokoffing	9052068d89	138.0 (#392 )	2025-06-02 00:45:46 -04:00
NewKidOnTheBlock	8c39175a02	SoGo calendar integration issues	2025-05-14 21:15:43 -04:00
sykoram	1a6be093dc	Improve install.py (#373 ) * install.py: add shebang * install.py: remove old version of _get_firefox_version * install.py: search for Firefox installation, including flatpak version * install.py: add option to disable 'Press ENTER to exit' * install.py: fix windows root	2025-04-28 10:06:35 -04:00
yokoffing	efee151779	Delete .github/ISSUE_TEMPLATE/bug_report.md	2025-04-16 12:21:48 -04:00
Danila Kononov	77983c7431	Create YML version of bug report form (#376 )	2025-04-16 12:08:16 -04:00
yokoffing	d3c53532eb	v137.0 (#379 )	2025-04-16 10:10:06 -04:00
yokoffing	6ef4cdbbe7	135.0 (#361 )	2025-02-25 17:43:16 -05:00
Michael Weems	9c1d652299	Update install.py (#369 ) Updating to Check Location of Firefox Install	2025-02-25 17:30:05 -05:00
yokoffing	09dd87a3ab	v132-133 (#350 )	2024-12-09 14:25:38 -05:00
Cat	d70e3cdebe	Updated install.py _get_default_profile_folder (#346 )	2024-12-09 14:21:25 -05:00
Cat	429abb61f5	Added installer.py (#318 )	2024-11-08 15:40:11 -05:00
yokoffing	80261756ca	v131 (#328 )	2024-11-01 18:02:48 -04:00
yokoffing	ab5ede0fef	v130 (#321 )	2024-09-26 14:43:48 -04:00
yokoffing	d07af83ee0	Sanitizer	2024-09-24 15:21:09 -04:00