v.129 (#315 )

tab preview pref changes
https://github.com/yokoffing/Betterfox/issues/309
2026-06-12 15:40:48 +05:30 · 2024-08-20 22:08:38 -04:00 · 2024-07-22 10:19:34 -04:00 · 2024-07-16 13:45:46 -04:00 · 2024-07-16 10:30:49 -04:00 · 2024-05-24 14:23:00 -04:00
11 changed files with 1261 additions and 1059 deletions
@@ -0,0 +1,13 @@
+# These are supported funding model platforms
+
+github: yokoffing
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: yokoffing
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: yokoffing
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+lfx_crowdfunding: # Replace with a single LFX Crowdfunding project-name e.g., cloud-foundry
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
@@ -1,6 +1,6 @@
 ---
-name: Bug report
-about: Create a report to help us improve
+name: Something is not working!
+about: Use this form if you have an issue.
 title: ''
 labels: ''
 assignees: yokoffing
@@ -35,9 +35,9 @@ I have attempted the following troubleshooting suggestions:
 *If applicable, add screenshots to help explain your problem.*

 **Desktop (please complete the following information):**
- - OS: [e.g. iOS]
- - Browser [e.g. chrome, safari]
- - Version [e.g. 22]
+ - OS:
+ - Browser:
+ - Version:

 **Additional context**
 *Add any other context about the problem here.*
@@ -1,10 +0,0 @@
---
-name: Feature request
-about: Suggest an idea for this project
-title: ''
-labels: ''
-assignees: yokoffing
-
---
-
-
@@ -3,62 +3,24 @@
 * Fastfox                                                                              *
 * "Non ducor duco"                                                                     *
 * priority: speedy browsing                                                            *
- * version: 116                                                                         *
+ * version: 129                                                                         *
 * url: https://github.com/yokoffing/Betterfox                                          *
 ***************************************************************************************/
- 
-// PREF: process count
-// [ABOUT] View in about:processes.
-// With Firefox Quantum (2017), CPU cores = processCount. However, since the
-// introduction of Fission [2], the number of website processes is controlled
-// by processCount.webIsolated. Disabling fission.autostart or changing
-// fission.webContentIsolationStrategy reverts control back to processCount.
-// [1] https://www.reddit.com/r/firefox/comments/r69j52/firefox_content_process_limit_is_gone/
-// [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

-// PREF: use one process for process preallocation cache
-//user_pref("dom.ipc.processPrelaunch.fission.number", 1); // default=3; Process Preallocation Cache
-
-// PREF: configure process isolation
-// [1] https://hg.mozilla.org/mozilla-central/file/tip/dom/ipc/ProcessIsolation.cpp#l53
-// [2] https://www.reddit.com/r/firefox/comments/r69j52/firefox_content_process_limit_is_gone/
-
-// OPTION 1: isolate all websites
-// Web content is always isolated into its own `webIsolated` content process
-// based on site-origin, and will only load in a shared `web` content process
-// if site-origin could not be determined.
-//user_pref("fission.webContentIsolationStrategy", 1); // DEFAULT
-//user_pref("browser.preferences.defaultPerformanceSettings.enabled", true); // DEFAULT
-    //user_pref("dom.ipc.processCount.webIsolated", 1); // one process per site origin
-
-// OPTION 2: isolate only "high value" websites
-// Only isolates web content loaded by sites which are considered "high
-// value". A site is considered high value if it has been granted a
-// `highValue*` permission by the permission manager, which is done in
-// response to certain actions.
-//user_pref("fission.webContentIsolationStrategy", 2);
-//user_pref("browser.preferences.defaultPerformanceSettings.enabled", false);
-    //user_pref("dom.ipc.processCount.webIsolated", 1); // one process per site origin (high value)
-    //user_pref("dom.ipc.processCount", 8); // determine by number of CPU cores/processors
-
-// OPTION 3: do not isolate websites
-// All web content is loaded into a shared `web` content process. This is
-// similar to the non-Fission behavior; however, remote subframes may still
-// be used for sites with special isolation behavior, such as extension or
-// mozillaweb content processes.
-//user_pref("fission.webContentIsolationStrategy", 0);
-//user_pref("browser.preferences.defaultPerformanceSettings.enabled", false);
-    //user_pref("dom.ipc.processCount", 8); // determine by number of CPU cores/processors
+/****************************************************************************
+ * SECTION: GENERAL                                                        *
+****************************************************************************/

 // PREF: initial paint delay
-// How long FF will wait before rendering the page, in milliseconds
-// Reduce the 5ms Firefox waits to render the page
+// How long FF will wait before rendering the page (in ms)
+// [NOTE] You may prefer using 250.
+// [NOTE] Dark Reader users may want to use 1000 [3].
 // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1283302
 // [2] https://docs.google.com/document/d/1BvCoZzk2_rNZx3u9ESPoFjSADRI0zIPeJRXFLwWXx_4/edit#heading=h.28ki6m8dg30z
-user_pref("nglayout.initialpaint.delay", 0); // default=5; used to be 250
-user_pref("nglayout.initialpaint.delay_in_oopif", 0); // default=5
+// [3] https://old.reddit.com/r/firefox/comments/o0xl1q/reducing_cpu_usage_of_dark_reader_extension/
+// [4] https://reddit.com/r/browsers/s/wvNB7UVCpx
+//user_pref("nglayout.initialpaint.delay", 5); // DEFAULT; formerly 250
+    //user_pref("nglayout.initialpaint.delay_in_oopif", 5); // DEFAULT

 // PREF: page reflow timer
 // Rather than wait until a page has completely downloaded to display it to the user,
@@ -71,7 +33,7 @@ user_pref("nglayout.initialpaint.delay_in_oopif", 0); // default=5
 // 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: 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.
@@ -87,13 +49,6 @@ user_pref("nglayout.initialpaint.delay_in_oopif", 0); // default=5
 // [3] https://dev.opera.com/articles/efficient-javascript/?page=3#smoothspeed
 user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)

-// PREF: frequency switch threshold [HIDDEN]
-// Raising the value will make the application more responsive at the expense of page load time.
-// [1] http://kb.mozillazine.org/Content.switch.threshold
-// [2] https://www.reddit.com/r/firefox/comments/11m2yuh/comment/jbjxp8s/?context=3
-//user_pref("content.interrupt.parsing", true); // DEFAULT [HIDDEN]
-//user_pref("content.switch.threshold", 750000); // DEFAULT [HIDDEN]
-
 // PREF: new tab preload
 // [WARNING] Disabling this may cause a delay when opening a new tab in Firefox.
 // [1] https://wiki.mozilla.org/Tiles/Technical_Documentation#Ping
@@ -118,106 +73,10 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 //user_pref("browser.sessionstore.restore_tabs_lazily", true); // DEFAULT

 // PREF: disable preSkeletonUI on startup [WINDOWS]
-user_pref("browser.startup.preXulSkeletonUI", false); // WINDOWS
+//user_pref("browser.startup.preXulSkeletonUI", false);

-/****************************************************************************
- * SECTION: TAB UNLOAD                                                      *
-****************************************************************************/
-
-// PREF: unload tabs on low memory
-// Firefox will detect if your computer’s memory is running low (less than 200MB)
-// and suspend tabs that you have not used in awhile.
-// [1] https://hacks.mozilla.org/2021/10/tab-unloading-in-firefox-93/
-//user_pref("browser.tabs.unloadOnLowMemory", true); // DEFAULT
-
-// PREF: determine when tabs unload [WINDOWS] [LINUX]
-// Notify TabUnloader or send the memory pressure if the memory resource
-// notification is signaled AND the available commit space is lower than
-// this value.
-// Set this to some high value, e.g. 2/3 of total memory available in your system:
-// 4GB=2640, 8GB=5280, 16GB=10560, 32GB=21120, 64GB=42240
-// [1] https://dev.to/msugakov/taking-firefox-memory-usage-under-control-on-linux-4b02
-//user_pref("browser.low_commit_space_threshold_mb", 2640); // default=200; WINDOWS LINUX
-
-// PREF: determine when tabs unload [LINUX]
-// On Linux, Firefox checks available memory in comparison to total memory,
-// and use this percent value (out of 100) to determine if Firefox is in a
-// low memory scenario.
-// [1] https://dev.to/msugakov/taking-firefox-memory-usage-under-control-on-linux-4b02
-//user_pref("browser.low_commit_space_threshold_percent", 33); // default=5; LINUX
-
-// PREF: determine how long (in ms) tabs are inactive before they unload
-// 60000=1min; 300000=5min; 600000=10min (default)
-//user_pref("browser.tabs.min_inactive_duration_before_unload", 300000); // 5min; default=600000
-
-/****************************************************************************
- * SECTION: EXPERIMENTAL                                                    *
-****************************************************************************/
-
-// 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: CSS :has() selector [NIGHTLY]
-// Needed for some extensions, filters, and customizations.
-// [1] https://developer.mozilla.org/en-US/docs/Web/CSS/:has
-// [2] https://caniuse.com/css-has
-user_pref("layout.css.has-selector.enabled", 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: Shadowrealms [NIGHTLY]
-// [1] https://github.com/tc39/proposal-shadowrealm/blob/main/explainer.md#introduction
-//user_pref("javascript.options.experimental.shadow_realms", true);
-
-// PREF: Wasm GC [NIGHTLY]
-// WASM GC refers to garbage collection for WebAssembly. Garbage collection is a mechanism
-// to automatically free up memory that is no longer being used by a program. This helps
-// manage memory and prevent memory leaks. 
-// [1] https://github.com/WebAssembly/gc/blob/main/proposals/gc/Overview.md
-//user_pref("javascript.options.wasm_gc", true);
-
-// PREF: WASM Function References [NIGHTLY]
-// [1] https://github.com/WebAssembly/function-references/blob/master/proposals/function-references/Overview.md
-//user_pref("javascript.options.wasm_function_references", true);
-
-// PREF: import assertions [NIGHTLY]
-//user_pref("javascript.options.experimental.import_assertions", true);
-
-// PREF: Array.fromAsync [NIGHTLY]
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1795452
-//user_pref("javascript.options.experimental.array_grouping", true);
-
-// PREF: scroll-driven animations [NIGHTLY]
-// [1] https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Experimental_features#scroll-driven_animations
-// [2] https://developer.chrome.com/articles/scroll-driven-animations/
-// [3] https://developer.chrome.com/en/blog/scroll-animation-performance-case-study/
-//user_pref("layout.css.scroll-driven-animations.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);
-
-// PREF: WebCodecs API [NIGHTLY]
-// [1] https://developer.mozilla.org/en-US/docs/Web/API/WebCodecs_API
-// [2] https://groups.google.com/a/mozilla.org/g/dev-platform/c/3g0fnn6682A?pli=1
-// [3] https://w3c.github.io/webcodecs/samples/
-//user_pref("dom.media.webcodecs.enabled", true);
+// PREF: lazy load iframes
+//user_pref("dom.iframe_lazy_loading.enabled", true); // DEFAULT [FF121+]

 /****************************************************************************
 * SECTION: GFX RENDERING TWEAKS                                            *
@@ -236,16 +95,9 @@ user_pref("layout.css.has-selector.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.enabled", true); // [REMOVED FF118?]
 //user_pref("gfx.webrender.software", true); // Software Webrender uses CPU instead of GPU
    //user_pref("gfx.webrender.software.opengl", true); // LINUX

-// PREF: NVIDIA RTX Video Super Resolution for video overlay [WINDOWS]
-// This is also a setting in NVIDIA's driver settings, so once this is
-// stable, it should default to true.
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1823135
-//user_pref("gfx.webrender.super-resolution.nvidia", true);
-
 // PREF: GPU-accelerated Canvas2D
 // Use gpu-canvas instead of to skia-canvas.
 // [WARNING] May cause issues on some Windows machines using integrated GPUs [2] [3]
@@ -255,8 +107,8 @@ user_pref("layout.css.has-selector.enabled", true);
 // [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; alt=8192
-    user_pref("gfx.canvas.accelerated.cache-size", 512); // default=256; alt=1024
+    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

@@ -272,11 +124,6 @@ user_pref("layout.css.has-selector.enabled", true);
 //user_pref("media.gpu-process-decoder", true); // DEFAULT WINDOWS
 //user_pref("media.ffmpeg.vaapi.enabled", true); // LINUX

-// PREF: disable AV1 for hardware decodeable videos
-// Firefox sometimes uses AV1 video decoding even to GPUs which do not support it.
-// [1] https://www.reddit.com/r/AV1/comments/s5xyph/youtube_av1_codec_have_worse_quality_than_old_vp9
-//user_pref("media.av1.enabled", false);
-
 // PREF: hardware and software decoded video overlay [FF116+]
 // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1829063
 // [2] https://phabricator.services.mozilla.com/D175993
@@ -286,46 +133,133 @@ user_pref("layout.css.has-selector.enabled", true);
    //user_pref("gfx.webrender.dcomp-video-sw-overlay-win-force-enabled", true); // enforce

 /****************************************************************************
- * SECTION: BROWSER CACHE                                                   *
+ * SECTION: DISK CACHE                                                     *
 ****************************************************************************/

 // PREF: disk cache
-// [NOTE] If you think disk cache helps performance, then feel free to override this.
+// [NOTE] If you think it helps performance, then feel free to override this.
 // [SETTINGS] See about:cache
-// [EXTENSION] https://addons.mozilla.org/en-US/firefox/addon/cache-longer/
 // 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.smart_size.enabled", false); // force a fixed max cache size on disk
-    //user_pref("browser.cache.disk.capacity", 8192000); // size of disk cache; default=256000; 1024000 = 1 GB, 2048000=2GB, 5120000=5GB, 8192000=8GB
-//user_pref("browser.cache.disk.max_entry_size", 51200); // 51 MB; DEFAULT; maximum size of an object in disk cache
-//user_pref("browser.cache.disk.metadata_memory_limit", 10000); // default=250; alt=15360; increase size (in KB) of intermediate memory caching of frequently used metadata (disk cache memory pool)
-//user_pref("browser.cache.max_shutdown_io_lag", 4); // default=2; number of seconds the cache spends writing pending data and closing files after shutdown has been signalled

-// PREF: specify how long pages are kept before being removed from cache (in hours)
-// Controls the time period used to re-compute the frecency value of cache entries.
-// The frecency value determines how recently and frequently a page has been accessed
-// and is used by Firefox's cache algorithm.
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=913808
-// [2] https://bugzilla.mozilla.org/show_bug.cgi?id=968101
-// [3] https://rockridge.hatenablog.com/entry/2014/09/15/165501
-//user_pref("browser.cache.frecency_half_life_hours", 24); // default=6
+// PREF: disk cache size
+// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=913808,968106,968101
+// [2] https://rockridge.hatenablog.com/entry/2014/09/15/165501
+// [3] https://www.reddit.com/r/firefox/comments/17oqhw3/firefox_and_ssd_disk_consumption/
+//user_pref("browser.cache.disk.smart_size.enabled", false); // force a fixed max cache size on disk
+//user_pref("browser.cache.disk.capacity", 512000); // default=256000; size of disk cache; 1024000=1GB, 2048000=2GB
+//user_pref("browser.cache.disk.max_entry_size", 51200); // DEFAULT (50 MB); maximum size of an object in disk cache
+
+// PREF: Race Cache With Network (RCWN) [FF59+]
+// [ABOUT] about:networking#rcwn
+// Firefox concurrently sends requests for cached resources to both the
+// local disk cache and the network server. The browser uses whichever
+// result arrives first and cancels the other request. This approach sometimes
+// loads pages faster because the network can be quicker than accessing the cache
+// on a hard drive. When RCWN is enabled, the request might be served from
+// the server even if you have valid entry in the cache. Set to false if your
+// intention is to increase cache usage and reduce network usage.
+// [1] https://slides.com/valentingosu/race-cache-with-network-2017
+// [2] https://simonhearne.com/2020/network-faster-than-cache/
+// [3] https://support.mozilla.org/en-US/questions/1267945
+// [4] https://askubuntu.com/questions/1214862/36-syns-in-a-row-how-to-limit-firefox-connections-to-one-website
+// [5] https://bugzilla.mozilla.org/show_bug.cgi?id=1622859
+// [6] https://soylentnews.org/comments.pl?noupdate=1&sid=40195&page=1&cid=1067867#commentwrap
+//user_pref("network.http.rcwn.enabled", false);
+
+// PREF: attempt to RCWN only if a resource is smaller than this size
+//user_pref("network.http.rcwn.small_resource_size_kb", 256); // DEFAULT
+
+// PREF: cache memory pool
+// Cache v2 provides a memory pool that stores metadata (such as response headers)
+// 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
+
+// PREF: number of chunks we preload ahead of read
+// Large content such as images will load faster.
+// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=913819,988318
+// [2] http://www.janbambas.cz/new-firefox-http-cache-enabled/
+//user_pref("browser.cache.disk.preload_chunk_count", 4); // DEFAULT
+
+// PREF: the time period used to re-compute the frecency value of cache entries
+// The frequency algorithm is used to select entries, and entries that are recently
+// saved or frequently reused are retained. The frecency value determines how
+// frequently a page has been accessed and is used by Firefox's cache algorithm.
+// The frequency algorithm is used to select entries, and entries that are recently
+// saved or frequently reused are retained. The frecency value determines how
+// often a page has been accessed and is used by Firefox's cache algorithm.
+// When the memory pool becomes full, the oldest data is purged. By default,
+// data older than 6 hours is treated as old.
+// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=942835,1012327
+// [2] https://bugzilla.mozilla.org/buglist.cgi?bug_id=913808,968101
+//user_pref("browser.cache.frecency_half_life_hours", 6); // DEFAULT
+
+// PREF: memory limit (in kB) for new cache data not yet written to disk
+// Writes to the cache are buffered and written to disk on background with low priority.
+// With a slow persistent storage, these buffers may grow when data is coming
+// fast from the network. When the amount of unwritten data is exceeded, new
+// writes will simply fail. We have two buckets, one for important data
+// (priority) like html, css, fonts and js, and one for other data like images, video, etc.
+//user_pref("browser.cache.disk.max_chunks_memory_usage", 40960); // DEFAULT (40 MB)
+//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
+// 3 = when-appropriate/automatically (default)
+//user_pref("browser.cache.check_doc_frequency", 3); // DEFAULT
+
+// PREF: enforce free space checks
+// When smartsizing is disabled, we could potentially fill all disk space by
+// cache data when the disk capacity is not set correctly. To avoid that, we
+// check the free space every time we write some data to the cache. The free
+// space is checked against two limits. Once the soft limit is reached we start
+// evicting the least useful entries, when we reach the hard limit writing to
+// the entry fails.
+//user_pref("browser.cache.disk.free_space_soft_limit", 10240); // default=5120 (5 MB)
+//user_pref("browser.cache.disk.free_space_hard_limit", 2048); // default=1024 (1 MB)
+
+// PREF: compression level for cached JavaScript bytecode [FF102+]
+// [1] https://github.com/yokoffing/Betterfox/issues/247
+// 0 = do not compress (default)
+// 1 = minimal compression
+// 9 = maximal compression
+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
+// subsequent reload of websites will be much much faster.
+// 0 means that the bytecode is created every 4 page loads [3].
+// [1] https://searchfox.org/mozilla-release/source/modules/libpref/init/StaticPrefList.yaml#3461-3488
+// [2] https://www.reddit.com/r/firefox/comments/12786yv/improving_performance_in_firefox_android_part_ii/
+// [3] https://github.com/zen-browser/desktop/issues/217
+// -1 = saved as soon as the script is seen for the first time, independently of the size or last access time
+// 0 = saved in order to minimize the page-load time (default)
+//user_pref("dom.script_loader.bytecode_cache.enabled", true); // DEFAULT
+//user_pref("dom.script_loader.bytecode_cache.strategy", 0); // DEFAULT
+
+/****************************************************************************
+ * SECTION: MEMORY CACHE                                                   *
+****************************************************************************/

 // PREF: memory cache
 // The "automatic" size selection (default) is based on a decade-old table
 // that only contains settings for systems at or below 8GB of system memory [1].
-// Waterfox G6 Beta 3 allows it to go above 8GB machines [3].
+// 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,
 // messages, and chrome based on the total amount of RAM
 // [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; 1048576=1GB, 2097152=2GB
-//user_pref("browser.cache.memory.max_entry_size", 5120); // DEFAULT; alt=25600; -1=entries bigger than than 90% of the mem-cache are never cached
+//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)

-// PREF: amount of pages stored in memory for Back/Forward
+// 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
 // that they don't have to be re-parsed. This improves performance
 // when pressing Back and Forward. This pref limits the maximum
@@ -334,7 +268,7 @@ user_pref("layout.css.has-selector.enabled", true);
 // 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", 1);
+//user_pref("browser.sessionhistory.max_total_viewers", 4);

 /****************************************************************************
 * SECTION: MEDIA CACHE                                                     *
@@ -384,11 +318,13 @@ 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].
 // 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
-user_pref("network.buffer.cache.size", 262144); // 256 kb; default=32768 (32 kb)
-user_pref("network.buffer.cache.count", 128); // default=24
+// [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

 // PREF: increase the absolute number of HTTP connections
 // [1] https://kb.mozillazine.org/Network.http.max-connections
@@ -398,7 +334,7 @@ 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.websocket.max-connections", 400); // default=200
+//user_pref("network.websocket.max-connections", 200); // DEFAULT

 // PREF: pacing requests [FF23+]
 // Controls how many HTTP requests are sent at a time.
@@ -413,216 +349,290 @@ 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

-// Connection Timeouts
-// [1] https://searchfox.org/mozilla-esr115/source/modules/libpref/init/all.js#1178
-// [2] https://www.catchpoint.com/blog/http-transaction-steps
-
-// PREF: timeout connections if an initial response is not received after
-// a given number of seconds.
-//user_pref("network.http.response.timeout", 60); // default=300 (5min)
-
-// PREF: close a connection if TLS handshake does not finish in a 
-// given number of seconds
-//user_pref("network.http.tls-handshake-timeout", 6); // default=30
-
-// PREF: the number of seconds after sending initial SYN for an HTTP connection
-// to give up if the OS does not give up first.
-//user_pref("network.http.connection-timeout", 18); // default=90
-
-// PREF: how long to wait before trying a different connection when the initial one fails
-// The number (in ms) after sending a SYN for an HTTP connection,
-// to wait before trying again with a different connection.
-// 0=disable the second connection
-//user_pref("network.http.connection-retry-timeout", 0); // default=250ms
-
-// PREF: keep-alive request timeout
-// Default timeout on IIS7 is 120 seconds. FF needs to reuse or drop the
-// connection within this time. By default, FF sets the timeout a little shorter to
-// keep a reserve for cases when the packet is lost or delayed on the route.
-// [1] http://kb.mozillazine.org/Network.http.keep-alive.timeout
-// [2] https://searchfox.org/mozilla-esr115/source/modules/libpref/init/all.js#1173-1178
-//user_pref("network.http.keep-alive.timeout", 31); // default=115
-
-// PREF: the amount of time (in seconds) to suspend pending requests, before spawning a
-// new connection, once the limit on the number of persistent connections per
-// host has been reached. However, a new connection will not be created if
-// max-connections or max-connections-per-server has also been reached.
-//user_pref("network.http.request.max-start-delay", 10); // DEFAULT
-
 // PREF: increase DNS cache
 // [1] https://developer.mozilla.org/en-US/docs/Web/Performance/Understanding_latency
-user_pref("network.dnsCacheEntries", 10000); // default=400
+//user_pref("network.dnsCacheEntries", 1000); // default=400

 // 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", 86400); // keep entries for 1 day; alt=3600 (1 hour)
+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

 // PREF: the number of threads for DNS
-user_pref("network.dns.max_high_priority_threads", 8); // default=5
-//user_pref("network.dns.max_any_priority_threads", 5); // default=3
+//user_pref("network.dns.max_high_priority_threads", 40); // DEFAULT [FF 123?]
+//user_pref("network.dns.max_any_priority_threads", 24); // DEFAULT [FF 123?]

 // PREF: increase TLS token caching 
-user_pref("network.ssl_tokens_cache_capacity", 20480); // default=2048; more TLS token caching (fast reconnects)
+user_pref("network.ssl_tokens_cache_capacity", 10240); // default=2048; more TLS token caching (fast reconnects)

 /****************************************************************************
- * SECTION: SPECULATIVE CONNECTIONS                                         *
+ * SECTION: SPECULATIVE LOADING                                            *
 ****************************************************************************/

+// These are connections that are not explicitly asked for (e.g., clicked on).
+// [1] https://developer.mozilla.org/en-US/docs/Web/Performance/Speculative_loading
+
 // [NOTE] FF85+ partitions (isolates) pooled connections, prefetch connections,
 // pre-connect connections, speculative connections, TLS session identifiers,
 // and other connections. We can take advantage of the speed of pre-connections
 // while preserving privacy. Users may relax hardening to maximize their preference.
-// For more information, see SecureFox: "PREF: State Paritioning" and "PREF: Network Partitioning" [1]
-// [1] https://github.com/yokoffing/Betterfox/blob/e9621b0062914da5fdb5f83b8da64041965b7a50/Securefox.js#L74-L108
+// For more information, see SecureFox: "PREF: State Paritioning" and "PREF: Network Partitioning".
 // [NOTE] To activate and increase network predictions, go to settings in uBlock Origin and uncheck:
 // - "Disable pre-fetching (to prevent any connection for blocked network requests)"
 // [NOTE] Add prefs to "MY OVERRIDES" section and uncomment to enable them in your user.js.

-// PREF: speculative pre-connections
-// Firefox will open predictive connections to sites when the user hovers their mouse over thumbnails
-// on the New Tab Page or the user starts to search in the Search Bar, or in the search field on the
-// New Tab Page [1]. This pref may control speculative connects for normal links, too [2].
-// The maximum number of current global half open sockets allowable when starting a new speculative connection [3].
-// In case the user follows through with the action, the page can begin loading faster
-// since some of the work was already started in advance.
-// [NOTE] TCP and SSL handshakes are set up in advance but page contents are not downloaded until a click on the link is registered.
+// PREF: link-mouseover opening connection to linked server
+// When accessing content online, devices use sockets as endpoints.
+// The global limit on half-open sockets controls how many speculative
+// connection attempts can occur at once when starting new connections [3].
+// If the user follows through, pages can load faster since some
+// work was done in advance. Firefox opens predictive connections
+// to sites when hovering over New Tab thumbnails or starting a
+// URL Bar search [1] and hyperlinks within a page [2].
+// [NOTE] DNS (if enabled), TCP, and SSL handshakes are set up in advance,
+// but page contents are not downloaded until a click on the link is registered.
 // [1] https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections?redirectslug=how-stop-firefox-automatically-making-connections&redirectlocale=en-US#:~:text=Speculative%20pre%2Dconnections
 // [2] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests
 // [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", 0);
-// or
-//user_pref("network.http.speculative-parallel-limit", 10); // default=6
+//user_pref("network.http.speculative-parallel-limit", 20); // DEFAULT (FF127+?)

-// PREF: DNS pre-resolve <link rel="dns-prefetch">
-// Resolve hostnames ahead of time. In order to reduce latency,
-// Firefox will proactively perform domain name resolution on links that
-// the user may choose to follow, as well as URLs for items
-// referenced by elements in a web page.
+// PREF: DNS prefetching for HTMLLinkElement <link rel="dns-prefetch">
+// Used for cross-origin connections to provide small performance improvements.
+// You can enable rel=dns-prefetch for the HTTPS document without prefetching
+// DNS for anchors, whereas the latter makes more specualtive requests [5].
 // [1] https://bitsup.blogspot.com/2008/11/dns-prefetching-for-firefox.html
 // [2] https://css-tricks.com/prefetching-preloading-prebrowsing/#dns-prefetching
 // [3] https://www.keycdn.com/blog/resource-hints#2-dns-prefetching
 // [4] http://www.mecs-press.org/ijieeb/ijieeb-v7-n5/IJIEEB-V7-N5-2.pdf
+// [5] https://bugzilla.mozilla.org/show_bug.cgi?id=1596935#c28
 user_pref("network.dns.disablePrefetch", true);
-//user_pref("network.dns.disablePrefetchFromHTTPS", true); // DEFAULT
-// or
-//user_pref("network.dns.disablePrefetch", false); // DEFAULT
-//user_pref("network.dns.disablePrefetchFromHTTPS", false);
+    user_pref("network.dns.disablePrefetchFromHTTPS", true); // [FF127+ false]
+
+// 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.
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1596935#c28
+// [2] https://github.com/arkenfox/user.js/issues/1870#issuecomment-2220773972
+//user_pref("dom.prefetch_dns_for_anchor_http_document", false); // [FF128+]
+//user_pref("dom.prefetch_dns_for_anchor_https_document", false); // DEFAULT [FF128+]
+
+// PREF: enable <link rel="preconnect"> tag and Link: rel=preconnect response header handling
+//user_pref("network.preconnect", true); // DEFAULT

 // PREF: preconnect to the autocomplete URL in the address bar
+// Whether to warm up network connections for autofill or search results.
 // Firefox preloads URLs that autocomplete when a user types into the address bar.
 // Connects to destination server ahead of time, to avoid TCP handshake latency.
 // [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);
-// or
-//user_pref("browser.urlbar.speculativeConnect.enabled", true); // DEFAULT
+//user_pref("browser.urlbar.speculativeConnect.enabled", false);

-// PREF: mousedown speculative connections on bookmarks and history
-user_pref("browser.places.speculativeConnect.enabled", false);
-// or
-//user_pref("browser.places.speculativeConnect.enabled", true); // DEFAULT
+// 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);

-// PREF: Preload <link rel=preload>
-// This tells the browser that the resource should be loaded as part of the current navigation
-// and it should start fetching it ASAP. This attribute can be applied to CSS, fonts, images, JavaScript files and more.
-// This tells the browser to download and cache a resource (like a script or a stylesheet) as soon as possible.
-// The browser doesn’t do anything with the resource after downloading it. Scripts aren’t executed, stylesheets
-// aren’t applied. It’s just cached – so that when something else needs it, it’s available immediately.
-// Focuses on fetching a resource for the CURRENT navigation.
-// [NOTE] Unlike other pre-connection tags (except modulepreload), this tag is mandatory for the browser.
-// [1] https://developer.mozilla.org/en-US/docs/Web/HTML/Link_types/preload
-// [2] https://w3c.github.io/preload/
-// [3] https://3perf.com/blog/link-rels/#preload
-// [4] https://medium.com/reloading/preload-prefetch-and-priorities-in-chrome-776165961bbf
-// [5] https://www.smashingmagazine.com/2016/02/preload-what-is-it-good-for/#how-can-preload-do-better
-// [6] https://www.keycdn.com/blog/resource-hints#preload
-// [7] https://github.com/arkenfox/user.js/issues/1098#issue-791949341
-// [8] https://yashints.dev/blog/2018/10/06/web-perf-2#preload
-// [9] https://web.dev/preload-critical-assets/
-//user_pref("network.preload", true); // DEFAULT
+// PREF: network module preload <link rel="modulepreload"> [FF115+]
+// High-priority loading of current page JavaScript modules.
+// Used to preload high-priority JavaScript modules for strategic performance improvements.
+// Module preloading allows developers to fetch JavaScript modules and dependencies
+// earlier to accelerate page loads. The browser downloads, parses, and compiles modules
+// referenced by links with this attribute in parallel with other resources, rather
+// than sequentially waiting to process each. Preloading reduces overall download times.
+// Browsers may also automatically preload dependencies without firing extra events.
+// Unlike other pre-connection tags (except rel=preload), this tag is mandatory for the browser.
+// [1] https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/rel/modulepreload
+//user_pref("network.modulepreload", true); // DEFAULT

-// PREF: enable early hints [NIGHTLY]
-// [1] https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/103
-//user_pref("network.early-hints.enabled", false); // DEFAULT
-// or
-//user_pref("network.early-hints.enabled", true);
-
-// PREF: `Link: rel=preconnect` in 103 Early Hint response
-//user_pref("network.early-hints.preconnect.enabled", false); // DEFAULT
-// or
-//user_pref("network.early-hints.preconnect.enabled", true);
-
-// PREF: the number of speculative connections allowed for early hints `Link: rel=preconnect`
-// When 0, this is limited by "network.http.speculative-parallel-limit".
-//user_pref("network.early-hints.preconnect.max_connections", 0);
-// or
-//user_pref("network.early-hints.preconnect.max_connections", 15); // default=10
-
-// PREF: Link prefetching <link rel="prefetch">
-// Firefox will prefetch certain links if any of the websites you are viewing uses the special prefetch-link tag.
-// A directive that tells a browser to fetch a resource that will likely be needed for the next navigation.
-// The resource will be fetched with extremely low priority (since everything the browser knows
-// is needed in the current page is more important than a resource that we guess might be needed in the next one).
-// Speeds up the NEXT navigation rather than the current one.
-// When the user clicks on a link, or initiates any kind of page load, link prefetching will stop and any
-// prefetch hints will be discarded.
-// Prefetch just downloads the resources; it doesn't execute anything (such as start to parse the web page),
-// and it may never make any calls to scripts, etc.
+// PREF: link prefetching <link rel="prefetch">
+// Pre-populates the HTTP cache by prefetching same-site future navigation
+// resources or subresources used on those pages.
+// Enabling link prefetching allows Firefox to preload pages tagged as important.
+// The browser prefetches links with the prefetch-link tag, fetching resources
+// likely needed for the next navigation at low priority. When clicking a link
+// or loading a new page, prefetching stops and discards hints. Prefetching
+// downloads resources without executing them.
+// [NOTE] Since link prefetch uses the HTTP cache, it has a number of issues
+// with document prefetches, such as being potentially blocked by Cache-Control headers
+// (e.g. cache partitioning).
 // [1] https://developer.mozilla.org/en-US/docs/Glossary/Prefetch
 // [2] http://www.mecs-press.org/ijieeb/ijieeb-v7-n5/IJIEEB-V7-N5-2.pdf
 // [3] https://timkadlec.com/remembers/2020-06-17-prefetching-at-this-age/
 // [4] https://3perf.com/blog/link-rels/#prefetch
+// [5] https://developer.mozilla.org/docs/Web/HTTP/Link_prefetching_FAQ
 user_pref("network.prefetch-next", false);
-// or
-//user_pref("network.prefetch-next", true); // DEFAULT
+
+// PREF: Fetch Priority API [FF119+]
+// Indicates whether the `fetchpriority` attribute for elements which support it.
+// [1] https://web.dev/articles/fetch-priority
+// [2] https://nitropack.io/blog/post/priority-hints
+// [2] https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/fetchPriority
+// [3] https://developer.mozilla.org/en-US/docs/Web/API/HTMLLinkElement/fetchPriority
+//user_pref("network.fetchpriority.enabled", true);
+
+// PREF: early hints [FF120+]
+// [1] https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/103
+// [2] https://developer.chrome.com/blog/early-hints/
+// [3] https://blog.cloudflare.com/early-hints/
+// [4] https://blog.cloudflare.com/early-hints-performance/
+//user_pref("network.early-hints.enabled", true);
+
+// PREF: `Link: rel=preconnect` in 103 Early Hint response [FF120+]
+// Used to warm most critical cross-origin connections to provide
+// performance improvements when connecting to them.
+// [NOTE] When 0, this is limited by "network.http.speculative-parallel-limit".
+//user_pref("network.early-hints.preconnect.enabled", true);
+//user_pref("network.early-hints.preconnect.max_connections", 10); // DEFAULT

 // PREF: Network Predictor (NP)
-// Keeps track of components that were loaded during page visits so that the browser knows next time
-// which resources to request from the server: It uses a local file to remember which resources were
-// needed when the user visits a webpage (such as image.jpg and script.js), so that the next time the
-// user prepares to go to that webpage (upon navigation? URL bar? mouseover?), this history can be used
-// to predict what resources will be needed rather than wait for the document to link those resources.
-// NP only performs pre-connect, not prefetch, by default, including DNS pre-resolve and TCP preconnect
-// (which includes SSL handshake). No data is actually sent to the site until a user actively clicks
-// a link. However, NP is still opening TCP connections and doing SSL handshakes, so there is still
-// information leakage about your browsing patterns.
-// [NOTE] Disabling DNS prefetching disables the DNS prefetching behavior of NP.
+// 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.
+// 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);
-// or
-//user_pref("network.predictor.enabled", true); // DEFAULT

-// PREF: NP fetches resources on the page ahead of time, to accelerate rendering of the page.
-// Performs both pre-connect and prefetch.
-user_pref("network.predictor.enable-prefetch", false);
-// or
-//user_pref("network.predictor.enable-prefetch", true); // DEFAULT
+// 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

-// PREF: NP active when hovering over links
-// The next time the user mouseovers a link to that webpage, history is used to predict what
-// resources will be needed rather than wait for the document to link those resources.
-// When you hover over links, connections are established to linked domains and servers
-// automatically to speed up the loading process should you click on the link. To improve the
-// loading speed, Firefox will open predictive connections to sites when the user hovers their
-// mouse over. In case the user follows through with the action, the page can begin loading
-// faster since some of the work was already started in advance. Focuses on fetching a resource
-// for the NEXT navigation.
+// PREF: make Network Predictor active when hovering over links
+// When hovering over links, Network Predictor uses past resource history to
+// preemptively request what will likely be needed instead of waiting for the document.
+// Predictive connections automatically open when hovering over links to speed up
+// loading, starting some work in advance.
 //user_pref("network.predictor.enable-hover-on-ssl", false); // DEFAULT
-// or
-//user_pref("network.predictor.enable-hover-on-ssl", true);

-// PREF: assign NP values
-    //user_pref("network.predictor.preresolve-min-confidence", 40); // default=60
-    //user_pref("network.predictor.preconnect-min-confidence", 60); // default=90
-    //user_pref("network.predictor.prefetch-min-confidence", 80); // default=100
-        //user_pref("network.predictor.prefetch-force-valid-for", 3600); // default=10
-        //user_pref("network.predictor.prefetch-rolling-load-count", 120); // default=10
-    //user_pref("network.predictor.max-resources-per-entry", 250); // default=100
-    //user_pref("network.predictor.max-uri-length", 1000); // default=500
+// PREF: assign Network Predictor confidence levels
+// [NOTE] Keep in mind that Network Predictor must LEARN your browsing habits.
+// Editing these lower will cause more speculative connections to occur,
+// which reduces accuracy over time and has privacy implications.
+//user_pref("network.predictor.preresolve-min-confidence", 60); // DEFAULT
+//user_pref("network.predictor.preconnect-min-confidence", 90); // DEFAULT
+//user_pref("network.predictor.prefetch-min-confidence", 100); // DEFAULT
+
+// PREF: other Network Predictor values
+// [NOTE] Keep in mmind that Network Predictor must LEARN your browsing habits.
+//user_pref("network.predictor.prefetch-force-valid-for", 10); // DEFAULT; how long prefetched resources are considered valid and usable (in seconds) for the prediction modeling
+//user_pref("network.predictor.prefetch-rolling-load-count", 10); // DEFAULT; the maximum number of resources that Firefox will prefetch in memory at one time based on prediction modeling
+//user_pref("network.predictor.max-resources-per-entry", 250); // default=100
+//user_pref("network.predictor.max-uri-length", 1000); // default=500
+
+/****************************************************************************
+ * SECTION: EXPERIMENTAL                                                    *
+****************************************************************************/
+
+// 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);
+
+/****************************************************************************
+ * SECTION: TAB UNLOAD                                                      *
+****************************************************************************/
+
+// PREF: unload tabs on low memory
+// [ABOUT] about:unloads
+// Firefox will detect if your computer’s memory is running low (less than 200MB)
+// and suspend tabs that you have not used in awhile.
+// [1] https://support.mozilla.org/en-US/kb/unload-inactive-tabs-save-system-memory-firefox
+// [2] https://hacks.mozilla.org/2021/10/tab-unloading-in-firefox-93/
+//user_pref("browser.tabs.unloadOnLowMemory", true); // DEFAULT
+
+// PREF: determine when tabs unload [WINDOWS] [LINUX]
+// Notify TabUnloader or send the memory pressure if the memory resource
+// notification is signaled AND the available commit space is lower than
+// this value (in MiB).
+// Set this to some value, e.g. 4/5 of total memory available on your system:
+// 4GB=3276, 8GB=6553, 16GB=13107, 32GB=25698, 64GB=52429
+// [1] https://dev.to/msugakov/taking-firefox-memory-usage-under-control-on-linux-4b02
+//user_pref("browser.low_commit_space_threshold_mb", 3276); // default=200; WINDOWS LINUX
+
+// PREF: determine when tabs unload [LINUX]
+// On Linux, Firefox checks available memory in comparison to total memory,
+// and use this percent value (out of 100) to determine if Firefox is in a
+// low memory scenario.
+// [1] https://dev.to/msugakov/taking-firefox-memory-usage-under-control-on-linux-4b02
+//user_pref("browser.low_commit_space_threshold_percent", 20); // default=5; LINUX
+
+// PREF: determine how long (in ms) tabs are inactive before they unload
+// 60000=1min; 300000=5min; 600000=10min (default)
+//user_pref("browser.tabs.min_inactive_duration_before_unload", 300000); // 5min; default=600000
+
+/****************************************************************************
+ * SECTION: PROCESS COUNT                                                  *
+****************************************************************************/
+
+// PREF: process count
+// [ABOUT] View in about:processes.
+// With Firefox Quantum (2017), CPU cores = processCount. However, since the
+// introduction of Fission [2], the number of website processes is controlled
+// by processCount.webIsolated. Disabling fission.autostart or changing
+// fission.webContentIsolationStrategy reverts control back to processCount.
+// [1] https://www.reddit.com/r/firefox/comments/r69j52/firefox_content_process_limit_is_gone/
+// [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
+
+// PREF: use one process for process preallocation cache
+//user_pref("dom.ipc.processPrelaunch.fission.number", 1); // default=3; Process Preallocation Cache
+
+// PREF: configure process isolation
+// [1] https://hg.mozilla.org/mozilla-central/file/tip/dom/ipc/ProcessIsolation.cpp#l53
+// [2] https://www.reddit.com/r/firefox/comments/r69j52/firefox_content_process_limit_is_gone/
+
+// OPTION 1: isolate all websites
+// Web content is always isolated into its own `webIsolated` content process
+// based on site-origin, and will only load in a shared `web` content process
+// if site-origin could not be determined.
+//user_pref("fission.webContentIsolationStrategy", 1); // DEFAULT
+//user_pref("browser.preferences.defaultPerformanceSettings.enabled", true); // DEFAULT
+    //user_pref("dom.ipc.processCount.webIsolated", 1); // one process per site origin
+
+// OPTION 2: isolate only "high value" websites
+// Only isolates web content loaded by sites which are considered "high
+// value". A site is considered high value if it has been granted a
+// `highValue*` permission by the permission manager, which is done in
+// response to certain actions.
+//user_pref("fission.webContentIsolationStrategy", 2);
+//user_pref("browser.preferences.defaultPerformanceSettings.enabled", false);
+    //user_pref("dom.ipc.processCount.webIsolated", 1); // one process per site origin (high value)
+    //user_pref("dom.ipc.processCount", 8); // determine by number of CPU cores/processors
+
+// OPTION 3: do not isolate websites
+// All web content is loaded into a shared `web` content process. This is
+// similar to the non-Fission behavior; however, remote subframes may still
+// be used for sites with special isolation behavior, such as extension or
+// mozillaweb content processes.
+//user_pref("fission.webContentIsolationStrategy", 0);
+//user_pref("browser.preferences.defaultPerformanceSettings.enabled", false);
+    //user_pref("dom.ipc.processCount", 8); // determine by number of CPU cores/processors
@@ -3,37 +3,16 @@
 * Peskyfox                                                                 *
 * "Aquila non capit muscas"                                                *
 * priority: remove annoyances                                              *
- * version: 116                                                             *
+ * version: 129                                                             *
 * 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                          *
 ***************************************************************************/

 /****************************************************************************
 * SECTION: MOZILLA UI                                                      *
 ****************************************************************************/

-// 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).
-// Set this pref to choose Dark on sites that support it (0) or Light (1).
-// Before FF95, the pref was 2, which determined site color based on OS theme.
-// Dark (0), Light (1), System (2), Browser (3) (default [FF95+])
-// [1] https://www.reddit.com/r/firefox/comments/rfj6yc/how_to_stop_firefoxs_dark_theme_from_overriding/hoe82i5/?context=3
-user_pref("layout.css.prefers-color-scheme.content-override", 2);
-
-// PREF: disable always using dark theme for private browsing windows [FF106+]
-//user_pref("browser.theme.dark-private-windows", false);
-
-// PREF: enable Firefox to use userChome, userContent, etc.
-user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true);
-
-// PREF: disable annoying update restart prompts
-// Delay update available prompts for ~1 week.
-// Will still show green arrow in menu bar.
-user_pref("app.update.suppressPrompts", true);
-
-// PREF: add compact mode back to options
-user_pref("browser.compactmode.show", true);
-
 // PREF: Mozilla VPN
 // [1] https://github.com/yokoffing/Betterfox/issues/169
 user_pref("browser.privatebrowsing.vpnpromourl", "");
@@ -41,8 +20,23 @@ user_pref("browser.privatebrowsing.vpnpromourl", "");

 // PREF: disable about:addons' Recommendations pane (uses Google Analytics)
 user_pref("extensions.getAddons.showPane", false); // HIDDEN
+
+// PREF: disable recommendations in about:addons' Extensions and Themes panes
 user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);

+// PREF: Personalized Extension Recommendations in about:addons and AMO
+// [NOTE] This pref has no effect when Health Reports are disabled.
+// [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);
@@ -55,13 +49,7 @@ user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features",
 // PREF: hide "More from Mozilla" in Settings
 user_pref("browser.preferences.moreFromMozilla", 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: Warnings
+// PREF: tab and about:config warnings
 //user_pref("browser.tabs.warnOnClose", false); // DEFAULT [FF94+]
 //user_pref("browser.tabs.warnOnCloseOtherTabs", true); // DEFAULT
 //user_pref("browser.tabs.warnOnOpen", true); // DEFAULT
@@ -77,19 +65,58 @@ 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);
+
+/****************************************************************************
+ * SECTION: THEME ADJUSTMENTS                                              *
+****************************************************************************/
+
+// PREF: enable Firefox to use userChome, userContent, etc.
+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).
+// Set this pref to choose Dark on sites that support it (0) or Light (1).
+// Before FF95, the pref was 2, which determined site color based on OS theme.
+// Dark (0), Light (1), System (2), Browser (3) [DEFAULT FF95+]
+// [1] https://www.reddit.com/r/firefox/comments/rfj6yc/how_to_stop_firefoxs_dark_theme_from_overriding/hoe82i5/?context=3
+user_pref("layout.css.prefers-color-scheme.content-override", 2);
+
+// PREF: disable always using dark theme for private browsing windows [FF106+]
+//user_pref("browser.theme.dark-private-windows", false);
+
 // PREF: prevent private windows being separate from normal windows in taskbar [WINDOWS] [FF106+]
-user_pref("browser.privateWindowSeparation.enabled", false); // WINDOWS
+user_pref("browser.privateWindowSeparation.enabled", false);

-// PREF: reduce the size of the "private window" indicator in tab bar [FF106+]
-user_pref("browser.privatebrowsing.enable-new-indicator", false);
+// PREF: show search bar [FF122+]
+// Mozilla has removed the search bar option from the settings window.
+//user_pref("browser.search.widget.inNavBar", true);

-// PREF: Cookie Banner handling [NIGHTLY]
+// PREF: new tab page wallpapers
+user_pref("browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled", true);
+
+/****************************************************************************
+ * SECTION: COOKIE BANNER HANDLING                                         *
+****************************************************************************/
+
+// PREF: Cookie Banner handling
 // [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
@@ -98,42 +125,40 @@ user_pref("browser.privatebrowsing.enable-new-indicator", false);
 // 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", 2);
-user_pref("cookiebanners.service.mode.privateBrowsing", 2);
-    //user_pref("cookiebanners.bannerClicking.enabled", true); // DEFAULT [FF108]
-    //user_pref("cookiebanners.cookieInjector.enabled", true); // DEFAULT
+user_pref("cookiebanners.service.mode", 1);
+user_pref("cookiebanners.service.mode.privateBrowsing", 1);

-// PREF: global CookieBannerRules [WiP]
-// Global rules that can handle a list of cookie banner libraries / providers on any site.
-// This is used for click rules that can handle common Consent Management Providers (CMP)
-// [WARNING] Beware of potential bugs and performance issues. Enabling this may negatively
-// impact site performance. It requires Firefox to run rule-defined query selectors for
-// every page.
-//user_pref("cookiebanners.service.enableGlobalRules", false); // DEFAULT
+// PREF: Cookie Banner global rules
+// Global rules that can handle a list of cookie banner libraries and providers on any site.
+// This is used for click rules that can handle common Consent Management Providers (CMP).
+//user_pref("cookiebanners.service.enableGlobalRules", true); // DEFAULT [FF121+]
+//user_pref("cookiebanners.service.enableGlobalRules.subFrames", true); // DEFAULT [FF121+]

-// PREF: Firefox Translations [NIGHTLY]
+/****************************************************************************
+ * SECTION: TRANSLATIONS                                                   *
+****************************************************************************/
+
+// PREF: Firefox Translations [FF118+]
 // Automated translation of web content is done locally in Firefox, so that
 // the text being translated does not leave your machine.
 // [ABOUT] Visit about:translations to translate your own text as well.
 // [1] https://blog.mozilla.org/en/mozilla/local-translation-add-on-project-bergamot/
 // [2] https://blog.nightly.mozilla.org/2023/06/01/firefox-translations-and-other-innovations-these-weeks-in-firefox-issue-139/
 // [3] https://www.ghacks.net/2023/08/02/mozilla-firefox-117-beta-brings-an-automatic-language-translator-for-websites-and-it-works-offline/
-user_pref("browser.translations.enable", true);
+//user_pref("browser.translations.enable", true); // DEFAULT
    //user_pref("browser.translations.autoTranslate", true);

-// PREF: Mozilla Shopping [FF116+]
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1836265
-//user_pref("browser.shopping.experience2023.enabled", false); // DEFAULT
-
 /****************************************************************************
 * SECTION: FULLSCREEN NOTICE                                               *
 ****************************************************************************/

-// PREF: disable fullscreen delay and 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);
+// PREF: remove fullscreen delay
+user_pref("full-screen-api.transition-duration.enter", "0 0"); // default=200 200
+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

 /****************************************************************************
 * SECTION: FONT APPEARANCE                                                 *
@@ -165,32 +190,45 @@ user_pref("full-screen-api.warning.timeout", 0);

 // PREF: minimize URL bar suggestions (bookmarks, history, open tabs)
 // Dropdown options in the URL bar:
-//user_pref("browser.urlbar.suggest.bookmark", true);
-user_pref("browser.urlbar.suggest.engines", false);
 //user_pref("browser.urlbar.suggest.history", false);
+//user_pref("browser.urlbar.suggest.bookmark", true); // DEFAULT
+//user_pref("browser.urlbar.suggest.clipboard", false);
 //user_pref("browser.urlbar.suggest.openpage", false);
-//user_pref("browser.urlbar.suggest.quickactions", false); // [NIGHTLY-only]
-//user_pref("browser.urlbar.suggest.searches", false);
+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
-
-// PREF: disable dropdown suggestions with empty query:
-user_pref("browser.urlbar.suggest.topsites", false);
-
-// PREF: enable helpful features:
 user_pref("browser.urlbar.suggest.calculator", true);
 user_pref("browser.urlbar.unitConversion.enabled", true);

+// PREF: disable dropdown suggestions with empty query
+//user_pref("browser.urlbar.suggest.topsites", false);
+
+// PREF: disable urlbar trending search suggestions [FF118+]
+// [SETTING] Search>Search Suggestions>Show trending search suggestions (FF119)
+user_pref("browser.urlbar.trending.featureGate", false);
+//user_pref("browser.urlbar.suggest.trending", false);
+
+// PREF: disable urlbar suggestions
+//user_pref("browser.urlbar.addons.featureGate", false); // [FF115+]
+//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.clipboard.featureGate", false); // [FF118+] [DEFAULT: true FF125+]
+//user_pref("browser.urlbar.yelp.featureGate", false); // [FF124+] [DEFAULT: 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
+//user_pref("browser.urlbar.suggest.engines", false);
+
 // PREF: Adaptive History Autofill
 // [1] https://docs.google.com/document/u/1/d/e/2PACX-1vRBLr_2dxus-aYhZRUkW9Q3B1K0uC-a0qQyE3kQDTU3pcNpDHb36-Pfo9fbETk89e7Jz4nkrqwRhi4j/pub
 //user_pref("browser.urlbar.autoFill", true); // [DEFAULT]
 //user_pref("browser.urlbar.autoFill.adaptiveHistory.enabled", false);

-// PREF: Quick Actions in the URL Bar [NIGHTLY-only]
-// [1] https://www.ghacks.net/2022/07/19/mozilla-is-testing-quick-actions-in-firefoxs-address-bar/
-//user_pref("browser.urlbar.quickactions.enabled", false);
-//user_pref("browser.urlbar.shortcuts.quickactions", false);
-
 // PREF: adjust the amount of Address bar / URL bar dropdown results
 // This value controls the total number of entries to appear in the location bar dropdown.
 // [NOTE] Items (bookmarks/history/openpages) with a high "frequency"/"bonus" will always
@@ -199,6 +237,12 @@ user_pref("browser.urlbar.unitConversion.enabled", true);
 // disable=0
 //user_pref("browser.urlbar.maxRichResults", 5); // default=10

+// PREF: text fragments [FF126+ NIGHTLY]
+// [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);
+
 /****************************************************************************
 * SECTION: AUTOPLAY                                                        *
 ****************************************************************************/
@@ -221,13 +265,13 @@ user_pref("browser.urlbar.unitConversion.enabled", true);
 * SECTION: NEW TAB PAGE                                                    *
 ****************************************************************************/

-// PREF: open windows/tabs from last session
+// PREF: startup / new tab page
 // 0=blank, 1=home, 2=last visited page, 3=resume previous session
 // [NOTE] Session Restore is cleared with history and not used in Private Browsing mode
-// [SETTING] General>Startup>Restore previous session
+// [SETTING] General>Startup>Open previous windows and tabs
 //user_pref("browser.startup.page", 3);

-// PREF: set HOME+NEWWINDOW page to blank tab
+// PREF: set HOME+NEW WINDOW page to blank tab
 // about:home=Activity Stream, custom URL, about:blank
 // [SETTING] Home>New Windows and Tabs>Homepage and new windows
 // [Custom URLs] Set two or more websites in Home Page Field – delimited by |
@@ -245,7 +289,9 @@ user_pref("browser.urlbar.unitConversion.enabled", true);
 //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); // Sponsored shortcuts [FF83+]
+      //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.section.topstories", false); // Recommended by Pocket
      //user_pref("browser.newtabpage.activity-stream.showSponsored", false); // Sponsored Stories [FF58+]  
 //user_pref("browser.newtabpage.activity-stream.feeds.section.highlights", false); // Recent Activity [DEFAULT]
@@ -255,6 +301,13 @@ user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
      //user_pref("browser.newtabpage.activity-stream.section.highlights.includeVisited", false);
 //user_pref("browser.newtabpage.activity-stream.feeds.snippets", false); // [DEFAULT]

+// PREF: wallpapers on New Tab [FF128+ NIGHTLY]
+//user_pref("browser.newtabpage.activity-stream.newtabWallpapers.enabled", false); // Wallpapers
+
+// PREF: clear default topsites
+// [NOTE] This does not block you from adding your own.
+//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/
 //user_pref("browser.newtabpage.activity-stream.improvesearch.handoffToAwesomebar", false);
@@ -281,31 +334,35 @@ user_pref("extensions.pocket.enabled", false);
 * SECTION: DOWNLOADS                                 *
 ******************************************************************************/

-// PREF: autohide the downloads button
-//user_pref("browser.download.autohideButton", true); // DEFAULT
-
 // PREF: choose download location
 // [SETTING] To set your default "downloads": General>Downloads>Save files to...
 // 0=desktop, 1=downloads (default), 2=last used
 //user_pref("browser.download.folderList", 1); // DEFAULT

-// PREF: always ask where to download
+// PREF: always ask how to handle new mimetypes [FF101+]
 // Enforce user interaction for greater security.
-// [SETTING] General>Downloads>Always ask you where to save files
+// [SETTING] General>Files and Applications>Applications>What should Firefox do with other files?
+// false=Save files
+// true=Ask whether to open or save files
+//user_pref("browser.download.always_ask_before_handling_new_types", true);
+
+// PREF: always ask where to download
+// [OPTIONAL HARDENING] Enforce user interaction for greater security.
+// [SETTING] General>Files and Applications>Downloads>Always ask you where to save files
 // [DIALOGUE] "Ask whether to open or save files"
 // true=direct download (default)
 // false=the user is asked what to do
-// [1] https://github.com/yokoffing/Betterfox/issues/216
-user_pref("browser.download.useDownloadDir", false);
+// [1] https://github.com/yokoffing/Betterfox/issues/267
+//user_pref("browser.download.useDownloadDir", false);
    //user_pref("browser.download.dir", "C:\Users\<YOUR_USERNAME>\AppData\Local\Temp"); // [WINDOWS]

-// PREF: always ask how to handle new mimetypes
-// Enforce user interaction for greater security.
-// [SETTING] General>Files and Applications>What should Firefox do with other files
-user_pref("browser.download.always_ask_before_handling_new_types", true);
+// PREF: autohide the downloads button
+//user_pref("browser.download.autohideButton", true); // DEFAULT

-// PREF: disable downloads panel opening on every download
-user_pref("browser.download.alwaysOpenPanel", false);
+// PREF: disable download panel opening on every download [non-functional?]
+// Controls whether to open the download panel every time a download begins.
+// [NOTE] The first download ever ran in a new profile will still open the panel.
+//user_pref("browser.download.alwaysOpenPanel", false);

 // PREF: disable adding downloads to the system's "recent documents" list 
 user_pref("browser.download.manager.addToRecentDocs", false);
@@ -317,6 +374,7 @@ user_pref("browser.download.manager.addToRecentDocs", false);
 // PREF: enforce Firefox's built-in PDF reader
 // 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").
+// [1] https://mozilla.github.io/pdf.js/
 //user_pref("pdfjs.disabled", false); // DEFAULT

 // PREF: allow viewing of PDFs even if the response HTTP headers
@@ -326,11 +384,12 @@ user_pref("browser.download.manager.addToRecentDocs", false);
 // PREF: open PDFs inline (FF103+)
 user_pref("browser.download.open_pdf_attachments_inline", true);

-// PREF: PDF sidebar on load [HIDDEN] 
+// PREF: PDF sidebar on load
 // 2=table of contents (if not available, will default to 1)
 // 1=view pages
-// -1=disabled (default)
-user_pref("pdfjs.sidebarViewOnLoad", 2);
+// 0=disabled
+// -1=remember previous state (default)
+//user_pref("pdfjs.sidebarViewOnLoad", 2);

 // PREF: default zoom for PDFs [HIDDEN]
 // [NOTE] "page-width" not needed if using sidebar on load
@@ -387,11 +446,9 @@ user_pref("pdfjs.sidebarViewOnLoad", 2);
 // [1] https://kb.mozillazine.org/About:config_entries
 //user_pref("browser.tabs.loadDivertedInBackground", false); // DEFAULT

-// PREF: load bookmarks in the background when left-clicking in Bookmarks Menu
-//user_pref("browser.tabs.loadBookmarksInBackground", true);
-
 // PREF: force bookmarks to open in a new tab, not the current tab
-user_pref("browser.tabs.loadBookmarksInTabs", true);
+//user_pref("browser.tabs.loadBookmarksInTabs", true);
+    //user_pref("browser.tabs.loadBookmarksInBackground", true); // load bookmarks in background

 // PREF: leave Bookmarks Menu open when selecting a site
 user_pref("browser.bookmarks.openInTabClosesMenu", false);
@@ -428,15 +485,21 @@ user_pref("findbar.highlightAll", true);
 //user_pref("browser.tabs.closeWindowWithLastTab", false);

 // PREF: stop websites from reloading pages automatically
-// [WARNING] Breakage with some sites.
+// [WARNING] Breaks some sites.
 // [1] https://www.ghacks.net/2018/08/19/stop-websites-from-reloading-pages-automatically/
 //user_pref("accessibility.blockautorefresh", true);
 //user_pref("browser.meta_refresh_when_inactive.disabled", true);

-// PREF: Controls if a double click word selection also deletes one adjacent whitespace
-// (if feasible). This mimics native behavior on macOS.
+// PREF: do not select the space next to a word when selecting a word
+user_pref("layout.word_select.eat_space_to_next_word", false);
+
+// PREF: controls if a double-click word selection also deletes one adjacent whitespace
+// This mimics native behavior on macOS.
 //user_pref("editor.word_select.delete_space_after_doubleclick_selection", true);

+// PREF: do not hide the pointer while typing [LINUX]
+//user_pref("widget.gtk.hide-pointer-while-typing.enabled", false);
+
 // PREF: limit events that can cause a pop-up
 // Firefox provides an option to provide exceptions for sites, remembered in your Site Settings.
 // (default) "change click dblclick auxclick mouseup pointerup notificationclick reset submit touchend contextmenu"
@@ -445,26 +508,46 @@ user_pref("findbar.highlightAll", true);
 //user_pref("dom.disable_open_during_load", true); // DEFAULT
 //user_pref("privacy.popups.showBrowserMessage", true); // DEFAULT

+// PREF: enable Tab Previews [FF122+, FF128+]
+// [1] https://github.com/yokoffing/Betterfox/issues/309
+//user_pref("browser.tabs.hoverPreview.enabled", true);
+    //user_pref("browser.tabs.hoverPreview.showThumbnails", true); // DEFAULT
+
 /****************************************************************************
- * SECTION: UNCATEGORIZED                                                   *
-****************************************************************************/
+ * SECTION: KEYBOARD AND SHORTCUTS                                          *
+ ****************************************************************************/

 // PREF: disable backspace action
 // 0=previous page, 1=scroll up, 2=do nothing
 //user_pref("browser.backspace_action", 2); // DEFAULT

-// PREF: disable Reader mode
-// Firefox will not have to parse webpage for Reader when navigating.
-// Extremely minimal performance impact, if you enable.
-//user_pref("reader.parse-on-load.enabled", false);
-
 // PREF: disable ALT key toggling the menu bar
 //user_pref("ui.key.menuAccessKeyFocuses", false);
    //user_pref("ui.key.menuAccessKey", 18); // DEFAULT

-// PREF: CTRL+TAB cycles tabs in chronological order instead of
-// recently-used order
-//user_pref("browser.ctrlTab.recentlyUsedOrder", false);
+// PREF: cycle through tabs in recently used order
+// [SETTING] Ctrl+Tab cycles through tabs in recently used order
+//user_pref("browser.ctrlTab.sortByRecentlyUsed", true);
+
+// PREF: disable websites overriding Firefox's keyboard shortcuts [FF58+]
+// 0=ask (default), 1=allow, 2=block
+// [SETTING] to add site exceptions: Ctrl+I>Permissions>Override Keyboard Shortcuts ***/
+//user_pref("permissions.default.shortcuts", 2);
+
+// PREF: hide frequent sites on right-click of taskbar icon [WINDOWS?]
+//user_pref("browser.taskbar.lists.frequent.enabled", false);
+
+/****************************************************************************
+ * SECTION: ACCESSIBILITY AND USABILITY                                     *
+ ****************************************************************************/
+
+// PREF: disable Reader mode parse on load
+// Reader supposedly costs extra CPU after page load.
+// [TIP] Use about:reader?url=%s as a keyword to open links automatically in reader mode [1].
+// Firefox will not have to parse webpage for Reader when navigating.
+// Extremely minimal performance impact, if you disable.
+// [1] https://www.reddit.com/r/firefox/comments/621sr2/i_found_out_how_to_automatically_open_a_url_in/ 
+//user_pref("reader.parse-on-load.enabled", false);

 // PREF: Spell-check
 // 0=none, 1-multi-line, 2=multi-line & single-line
@@ -474,9 +557,25 @@ user_pref("findbar.highlightAll", true);
 // [1] https://kb.mozillazine.org/Ui.SpellCheckerUnderlineStyle#Possible_values_and_their_effects
 //user_pref("ui.SpellCheckerUnderlineStyle", 1);

+// PREF: remove underlined characters from various settings
+//user_pref("ui.key.menuAccessKey", 0);
+
+// PREF: enable CSS moz document rules
+// Still needed for Stylus?
+// [1] https://reddit.com/r/FirefoxCSS/comments/8x2q97/reenabling_mozdocument_rules_in_firefox_61/
+//user_pref("layout.css.moz-document.content.enabled", true);
+
+/****************************************************************************
+ * SECTION: BOOKMARK MANAGEMENT                                             *
+ ****************************************************************************/
+
 // PREF: limit the number of bookmark backups Firefox keeps
 //user_pref("browser.bookmarks.max_backups", 1); // default=15

+/****************************************************************************
+ * SECTION: ZOOM AND DISPLAY SETTINGS                                       *
+ ****************************************************************************/
+
 // PREF: zoom only text on webpage, not other elements
 //user_pref("browser.zoom.full", false);

@@ -494,40 +593,40 @@ user_pref("findbar.highlightAll", true);
 // PREF: hide image placeholders
 //user_pref("browser.display.show_image_placeholders", false);

-// PREF: wrap long lines of text when using source / debugger
-//user_pref("view_source.wrap_long_lines", true);
-//user_pref("devtools.debugger.ui.editor-wrapping", true);
-
-// PREF: enable ASRouter Devtools at about:newtab#devtools (useful if you're making your own CSS theme)
-// [1] https://firefox-source-docs.mozilla.org/browser/components/newtab/content-src/asrouter/docs/debugging-docs.html
-//user_pref("browser.newtabpage.activity-stream.asrouter.devtoolsEnabled", true);
-// show user agent styles in the inspector
-//user_pref("devtools.inspector.showUserAgentStyles", true);
-// show native anonymous content (like scrollbars or tooltips) and user agent shadow roots (like the components of an <input> element) in the inspector
-//user_pref("devtools.inspector.showAllAnonymousContent", true);
-
-// PREF: print preview
-//user_pref("print.tab_modal.enabled", true); // DEFAULT
-
 // PREF: adjust the minimum tab width
 // Can be overridden by userChrome.css
 //user_pref("browser.tabs.tabMinWidth", 120); // default=76

-// PREF: remove underlined characters from various settings
-//user_pref("ui.key.menuAccessKey", 0);
+// PREF: always underline links [FF120+]
+//user_pref("layout.css.always_underline_links", false); // DEFAULT

-// PREF: disable websites overriding Firefox's keyboard shortcuts [FF58+]
-// 0=ask (default), 1=allow, 2=block
-// [SETTING] to add site exceptions: Ctrl+I>Permissions>Override Keyboard Shortcuts ***/
-//user_pref("permissions.default.shortcuts", 2);
+/****************************************************************************
+ * SECTION: DEVELOPER TOOLS                                                 *
+ ****************************************************************************/
+
+// PREF: wrap long lines of text when using source / debugger
+//user_pref("view_source.wrap_long_lines", true);
+//user_pref("devtools.debugger.ui.editor-wrapping", true);
+
+// PREF: enable ASRouter Devtools at about:newtab#devtools
+// This is useful if you're making your own CSS theme.
+// [1] https://firefox-source-docs.mozilla.org/browser/components/newtab/content-src/asrouter/docs/debugging-docs.html
+//user_pref("browser.newtabpage.activity-stream.asrouter.devtoolsEnabled", true);
+
+// show user agent styles in the inspector
+//user_pref("devtools.inspector.showUserAgentStyles", true);
+
+// show native anonymous content (like scrollbars or tooltips) and user
+// agent shadow roots (like the components of an <input> element) in the inspector
+//user_pref("devtools.inspector.showAllAnonymousContent", true);
+
+/****************************************************************************
+ * SECTION: IMAGE AND MEDIA HANDLING                                        *
+ ****************************************************************************/

 // PREF: JPEG XL image format [NIGHTLY]
 // May not affect anything on ESR/Stable channel [2].
+// [TEST] https://jpegxl.io/tutorials/firefox/#firefoxjpegxltutorial
 // [1] https://cloudinary.com/blog/the-case-for-jpeg-xl
-// [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1539075
+// [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1539075#c51
 //user_pref("image.jxl.enabled", true);
-
-// PREF: enable CSS moz document rules
-// Still needed for Stylus?
-// [1] https://reddit.com/r/FirefoxCSS/comments/8x2q97/reenabling_mozdocument_rules_in_firefox_61/
-//user_pref("layout.css.moz-document.content.enabled", true);
@@ -5,12 +5,29 @@
 # 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/). 

-:new: Now with [ESR support](https://github.com/yokoffing/Betterfox/tree/esr115#betterfox-esr).
+31% [faster](https://medium.com/@mihirgrand/comparing-popular-firefox-forks-6fa83fdfdaad#:~:text=31%25%20more%20than%20vanilla%20Firefox) than regular Firefox :rocket:
+
+Now with support for ESR [128](https://github.com/yokoffing/Betterfox/tree/esr128) :new: 
+
+## 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.
+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.
+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://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).
+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).

 ## Simple goals
 1) **Minimalism:** get what isn't needed out of the way
@@ -19,47 +36,33 @@ Betterfox is an opinionated preference list inspired by the [law of diminishing

 ## Simple configs

-| List      | Description |
-|:---------:|-------------|
-| [Fastfox](https://github.com/yokoffing/Betterfox/blob/main/Fastfox.js)   | Immensely increase Firefox's browsing speed. Give Chrome a run for its money!|
-| [Securefox](https://github.com/yokoffing/Betterfox/blob/main/Securefox.js) | [Global Privacy Control](https://blog.mozilla.org/netpolicy/2021/10/28/implementing-global-privacy-control/). [HTTPS-by-Default](https://blog.mozilla.org/security/2021/08/10/firefox-91-introduces-https-by-default-in-private-browsing/). [Total Cookie Protection](https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/) with [site isolation](https://blog.mozilla.org/security/2021/05/18/introducing-site-isolation-in-firefox/). Enhanced [state](https://developer.mozilla.org/en-US/docs/Web/Privacy/State_Partitioning) and [network](https://blog.mozilla.org/security/2021/01/26/supercookie-protections/) partitioning. [Telemetry](https://github.com/yokoffing/Betterfox/blob/e66a549985f6b0db4b14226904b8c09eaaea998f/Securefox.js#L1262-L1265) disabled. |
-| [Peskyfox](https://github.com/yokoffing/Betterfox/blob/main/Peskyfox.js)  | Unclutter the new tab page. Remove [Pocket](https://support.mozilla.org/en-US/kb/what-pocket). Restore [compact mode](https://support.mozilla.org/en-US/kb/compact-mode-workaround-firefox) as an option. Stop webpage notifications, pop-ups, and other annoyances. |
-| [Smoothfox](https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js) | Get Edge-like smooth scrolling on your favorite browser — or choose something more your style. |
-| [user.js](https://github.com/yokoffing/Betterfox/blob/main/user.js) | All the essentials. None of the breakage. This is your `user.js`. |
-
 `Fastfox`, `Securefox`, `Peskyfox`, and `Smoothfox` are guides to settings within Firefox.

 The `user.js` — a configuration file that controls Firefox settings — is curated from these guides.

-## Getting started
-*If you don't have it already: [Get Firefox](https://www.mozilla.org/en-US/firefox/all/#product-desktop-release)*
-
-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.
-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.
-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). For a simple solution, use [Ghostery](https://addons.mozilla.org/en-US/firefox/addon/ghostery/).
-3) Enable **DNS-level protection** with [NextDNS](https://nextdns.io/?from=xujj63g5), and check out our configuration [guide](https://github.com/yokoffing/NextDNS-Config).
-    * See how to [quickly enable](https://support.mozilla.org/en-US/kb/dns-over-https) **secure DNS** in Firefox.
-
-## about:Privacy
-Betterfox is a great balance of privacy and convenience.
-
-See [Optional Hardening](https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening) for other suggestions.
+| List      | Description |
+|:---------:|-------------|
+| [Fastfox](https://github.com/yokoffing/Betterfox/blob/main/Fastfox.js)   | Increase Firefox's browsing speed. Give Chrome a run for its money!|
+| [Securefox](https://github.com/yokoffing/Betterfox/blob/main/Securefox.js) | Protect user data without causing site breakage. |
+| [Peskyfox](https://github.com/yokoffing/Betterfox/blob/main/Peskyfox.js)  | Provide a clean, distraction-free browsing experience. |
+| [Smoothfox](https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js) | Get Edge-like smooth scrolling on your favorite browser — or choose something more your style. |
+| [user.js](https://github.com/yokoffing/Betterfox/blob/main/user.js) | All the essentials. None of the breakage. This is your `user.js`. |

 ## Recognition

 ### Browser Integration
-* [Waterfox](https://github.com/WaterfoxCo/Waterfox/releases/tag/G6.0b3) | [files](https://github.com/WaterfoxCo/Waterfox/tree/future/waterfox/browser/app/profile) (August 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) (April 2023)
+> [!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)
+* [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)
+* [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
-* [Ukrainian] [Firefox is NOT private. I show how to fix it.](https://youtu.be/mVBxBPwI_gE?si=CdPhYN8OezQbvazX&t=222) (Aug 2023)
 * [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) 
@@ -70,7 +73,9 @@ See [Optional Hardening](https://github.com/yokoffing/Betterfox/wiki/Optional-Ha
 * [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
-* [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) (April 2023)
+* [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)
 * [2023 Browser Showdown: Comparing Chrome, Brave, Firefox, Vivaldi, and Opera](https://www.appdate.lk/technology/2023-browser-showdown/) (Jan 2023)

 ### Guides
@@ -83,9 +88,10 @@ See [Optional Hardening](https://github.com/yokoffing/Betterfox/wiki/Optional-Ha
 * “I use this one ... The performance is absolutely amazing. There’s definitely a huge difference when it comes to loading sites.” - [DIRIKtv](https://youtu.be/N8IOJiOFVEk?t=16)
 * "BetterFox ... will provide good-enough privacy and help with performance." - [Qdoit12Super](https://old.reddit.com/r/browsers/comments/139h4my/suggestion_for_finding_3_good_privacy_focus/jj3n3qn/?context=2)
 * "...drastically changed the experience with Firefox for me. Improved speed, security, smoothness, and removed clutter." - [AppDate](https://www.appdate.lk/technology/2023-browser-showdown/#:~:text=Used%20the%20BetterFox%20user%20config%20settings%20with%20some%20overrides%20which%20drastically%20changed%20the%20experience)
+* "Firefox with uBlock Origin extension and tuned with Betterfox is faster than Safari."  - [cugeloid](https://elephas.app/blog/best-browsers-mac#what-is-the-best-browser-for-mac-according-to-redditandnbsp)
 * "I don't think I could use Firefox without Betterfox." - [Professional_Fun4616](https://old.reddit.com/r/nextdns/comments/15y815f/the_people_behind_betterfox_have_this_awesome/jxb7cir/?context=3)
 * "The best collection of tweaks available." - [AuRiMaS](https://old.reddit.com/r/MozillaFirefox/comments/15cc1vk/about_changes_in_aboutconfig/jtyx910/?context=3)
-* "FF is now much snappier! Thanks a lot for the suggestions!" - [whotheff](https://old.reddit.com/r/firefox/comments/z5auzi/firefox_not_properly_usingrecognizing_gpu_poor/iy36hyz/)
+* "FF is now much snappier!" - [whotheff](https://old.reddit.com/r/firefox/comments/z5auzi/firefox_not_properly_usingrecognizing_gpu_poor/iy36hyz/)
 * "...the experience is so good now I don’t think I’ll go back to any of the chromium based browsers." - [Mr_Compromise](https://old.reddit.com/r/pcmasterrace/comments/zwioe1/what_browser_will_you_be_using_in_2023_please/j1wmbxo/)

 ## Support
@@ -94,12 +100,11 @@ If you like the project, leave a :star: (top right) and become a [stargazer](htt

 [![Stargazers repo roster for @yokoffing/Betterfox](https://reporoster.com/stars/dark/yokoffing/Betterfox)](https://github.com/yokoffing/Betterfox/stargazers)

-## Credit
-<div>
-<img align="right" src="https://media.tenor.com/m_knf6IKaJwAAAAC/hi-fox.gif" width="110" height="120"/>
-</div>
+<a href='https://ko-fi.com/Q5Q5G8EPH' target='_blank'><img height='36' style='border:0px;height:36px;' src='https://storage.ko-fi.com/cdn/kofi2.png?v=3' border='0' alt='Buy Me a Coffee at ko-fi.com' /></a>
+<noscript><a href="https://liberapay.com/yokoffing/donate"><img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg"></a></noscript>

-* This repository benefits from the ongoing research provided by [arkenfox](https://github.com/arkenfox/user.js).
+## 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.
 * 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.
@@ -1,43 +1,65 @@
+
 /****************************************************************************************
 * Smoothfox                                                                            *
 * "Faber est suae quisque fortunae"                                                    *
 * priority: better scrolling                                                           *
- * version: July 2023                                                                   *
+ * version: 126.1                                                                       *
 * url: https://github.com/yokoffing/Betterfox                                          *
 ***************************************************************************************/

-/****************************************************************************************
- * OPTION 1: INSTANT SCROLLING (SIMPLE ADJUSTMENT)                                      *
-****************************************************************************************/
-// recommended for 60hz+ displays
-user_pref("apz.overscroll.enabled", true); // not DEFAULT on Linux
-user_pref("general.smoothScroll", true); // DEFAULT
-user_pref("mousewheel.default.delta_multiplier_y", 275); // 250-400; adjust this number to your liking
+// Use only one option at a time!
+// Reset prefs if you decide to use different option.

 /****************************************************************************************
- * OPTION 2: SMOOTH SCROLLING                                                           *
+ * OPTION: SHARPEN SCROLLING                                                           *
+****************************************************************************************/
+// credit: https://github.com/black7375/Firefox-UI-Fix
+// 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("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
+// Firefox Nightly only:
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1846935
+user_pref("general.smoothScroll.msdPhysics.enabled", false); // [FF122+ Nightly]
+
+/****************************************************************************************
+ * OPTION: INSTANT SCROLLING (SIMPLE ADJUSTMENT)                                       *
+****************************************************************************************/
+// recommended for 60hz+ displays
+user_pref("apz.overscroll.enabled", true); // DEFAULT NON-LINUX
+user_pref("general.smoothScroll", true); // DEFAULT
+user_pref("mousewheel.default.delta_multiplier_y", 275); // 250-400; adjust this number to your liking
+// Firefox Nightly only:
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1846935
+user_pref("general.smoothScroll.msdPhysics.enabled", false); // [FF122+ Nightly]
+
+/****************************************************************************************
+ * OPTION: SMOOTH SCROLLING                                                            *
 ****************************************************************************************/
 // recommended for 90hz+ displays
-user_pref("apz.overscroll.enabled", true); // not DEFAULT on Linux
+user_pref("apz.overscroll.enabled", true); // DEFAULT NON-LINUX
 user_pref("general.smoothScroll", true); // DEFAULT
 user_pref("general.smoothScroll.msdPhysics.enabled", true);
 user_pref("mousewheel.default.delta_multiplier_y", 300); // 250-400; adjust this number to your liking

 /****************************************************************************************
- * OPTION 3: NATURAL SMOOTH SCROLLING V3 [MODIFIED]                                     *
+ * OPTION: NATURAL SMOOTH SCROLLING V3 [MODIFIED]                                      *
 ****************************************************************************************/
+// credit: https://github.com/AveYo/fox/blob/cf56d1194f4e5958169f9cf335cd175daa48d349/Natural%20Smooth%20Scrolling%20for%20user.js
 // recommended for 120hz+ displays
 // largely matches Chrome flags: Windows Scrolling Personality and Smooth Scrolling
-// from https://github.com/AveYo/fox/blob/cf56d1194f4e5958169f9cf335cd175daa48d349/Natural%20Smooth%20Scrolling%20for%20user.js
-user_pref("apz.overscroll.enabled", true); // not DEFAULT on Linux
+user_pref("apz.overscroll.enabled", true); // DEFAULT NON-LINUX
 user_pref("general.smoothScroll", true); // DEFAULT
 user_pref("general.smoothScroll.msdPhysics.continuousMotionMaxDeltaMS", 12);
 user_pref("general.smoothScroll.msdPhysics.enabled", true);
 user_pref("general.smoothScroll.msdPhysics.motionBeginSpringConstant", 600);
 user_pref("general.smoothScroll.msdPhysics.regularSpringConstant", 650);
 user_pref("general.smoothScroll.msdPhysics.slowdownMinDeltaMS", 25);
-user_pref("general.smoothScroll.msdPhysics.slowdownMinDeltaRatio", 2.0);
+user_pref("general.smoothScroll.msdPhysics.slowdownMinDeltaRatio", "2");
 user_pref("general.smoothScroll.msdPhysics.slowdownSpringConstant", 250);
-user_pref("general.smoothScroll.currentVelocityWeighting", 1.0);
-user_pref("general.smoothScroll.stopDecelerationWeighting", 1.0);
+user_pref("general.smoothScroll.currentVelocityWeighting", "1");
+user_pref("general.smoothScroll.stopDecelerationWeighting", "1");
 user_pref("mousewheel.default.delta_multiplier_y", 300); // 250-400; adjust this number to your liking
@@ -1,114 +0,0 @@
-//
-/* 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 this file when the application restarts.
- *
- * To make lasting changes to preferences, you will have to edit this file.
- */
-
-/****************************************************************************
- * Betterfox - LibreWolf overrides                                          *
- * Quis custodiet ipsos custodes                                            *
- * version: August 2023                                                     *
- * url: https://github.com/yokoffing/Betterfox                              *
- * license: https://github.com/yokoffing/Betterfox/blob/main/LICENSE        *
- * README: https://github.com/yokoffing/Betterfox/blob/main/README.md       *
-****************************************************************************/
-
-// Better off just using a user.js file:
-// [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/41963
-// [2] https://github.com/arkenfox/user.js/issues/1695#issuecomment-1666505218
-
-// Where do I find my librewolf.overrides.cfg? https://librewolf.net/docs/settings/#where-do-i-find-my-librewolfoverridescfg
-// LibreWolf default prefs: https://gitlab.com/librewolf-community/settings/-/blob/master/librewolf.cfg
-
-/****************************************************************************
- * SECTION: FASTFOX                                                         *
-****************************************************************************/
-defaultPref("layout.css.grid-template-masonry-value.enabled", true);
-defaultPref("dom.enable_web_task_scheduling", true);
-
-/****************************************************************************
- * SECTION: SECUREFOX                                                       *
-****************************************************************************/
-/** TRACKING PROTECTION ***/
-defaultPref("urlclassifier.trackingSkipURLs", "*.reddit.com, *.twitter.com, *.twimg.com");
-defaultPref("urlclassifier.features.socialtracking.skipURLs", "*.instagram.com, *.twitter.com, *.twimg.com");
-
-/** OCSP & CERTS / HPKP ***/
-// Use CRLite instead of OCSP
-defaultPref("security.OCSP.enabled", 0);
-defaultPref("security.OCSP.require", false);
-defaultPref("security.pki.crlite_mode", 2);
-
-/** RFP ***/
-// Limits refresh rate to 60mHz, breaks timezone, and forced light theme
-// [1] https://librewolf.net/docs/faq/#what-are-the-most-common-downsides-of-rfp-resist-fingerprinting
-defaultPref("privacy.resistFingerprinting", false);
-
-// WebGL
-// Breaks Map sites, NYT articles, Nat Geo, and more
-// [1] https://manu.ninja/25-real-world-applications-using-webgl/
-defaultPref("webgl.disabled", false);
-
-// DRM
-// Netflix, Udemy, Spotify, etc.
-defaultPref("media.eme.enabled", true);
-
-/** HTTPS-ONLY MODE ***/
-defaultPref("dom.security.https_only_mode_error_page_user_suggestions", true);
-
-/** PASSWORDS AND AUTOFILL ***/
-defaultPref("signon.generation.enabled", false);
-
-/** WEBRTC ***/
-// Breaks video conferencing
-defaultPref("media.peerconnection.ice.no_host", false);
-
-/** PERMISSIONS ***/
-defaultPref("permissions.default.geo", 2);
-defaultPref("permissions.default.desktop-notification", 2);
-defaultPref("dom.push.enabled", false);
-
-/****************************************************************************
- * SECTION: PESKYFOX                                                        *
-****************************************************************************/
-/** MOZILLA UI ***/
-defaultPref("layout.css.prefers-color-scheme.content-override", 2);
-defaultPref("toolkit.legacyUserProfileCustomizations.stylesheets", true);
-defaultPref("browser.compactmode.show", true);
-
-/** FULLSCREEN ***/
-defaultPref("full-screen-api.transition-duration.enter", "0 0");
-defaultPref("full-screen-api.transition-duration.leave", "0 0");
-defaultPref("full-screen-api.warning.delay", 0);
-defaultPref("full-screen-api.warning.timeout", 0);
-
-/** URL BAR ***/
-defaultPref("browser.urlbar.suggest.engines", false);
-defaultPref("browser.urlbar.suggest.topsites", false);
-defaultPref("browser.urlbar.suggest.calculator", true);
-defaultPref("browser.urlbar.unitConversion.enabled", true);
-
-/** AUTOPLAY ***/
-// Default breaks some video players
-defaultPref("media.autoplay.blocking_policy", 0);
-
-/** PASSWORDS ***/
-defaultPref("editor.truncate_user_pastes", false);
-
-/** DOWNLOADS ***/
-defaultPref("browser.download.autohideButton", true);
-
-/** PDF ***/
-defaultPref("browser.download.open_pdf_attachments_inline", true);
-
-/** TAB BEHAVIOR ***/
-defaultPref("browser.tabs.loadBookmarksInTabs", true);
-defaultPref("browser.bookmarks.openInTabClosesMenu", false);
-defaultPref("findbar.highlightAll", true);
-
-/****************************************************************************
- * END: BETTERFOX                                                           *
-****************************************************************************/
@@ -18,29 +18,25 @@
 //user_pref("network.trr.uri", "https://dns.nextdns.io/******/Firefox"); // TRR/DoH

 /** FASTFOX ***/
-//user_pref("dom.ipc.processCount.webIsolated", 2); // process per site
-//user_pref("dom.ipc.processPrelaunch.fission.number", 1); // number of Preallocated processes
 user_pref("browser.sessionstore.restore_pinned_tabs_on_demand", true);
-user_pref("network.http.speculative-parallel-limit", 6); // DEFAULT
-user_pref("network.dns.disablePrefetch", false); // DEFAULT; using DoH / ODNS
-user_pref("network.dns.disablePrefetchFromHTTPS", false); // using DoH / ODNS
-user_pref("browser.urlbar.speculativeConnect.enabled", true); // DEFAULT
-user_pref("browser.places.speculativeConnect.enabled", true); // DEFAULT
-user_pref("network.early-hints.enabled", true); // DEFAULT NIGHTLY
-user_pref("network.early-hints.preconnect.enabled", true);
-//user_pref("network.early-hints.preconnect.max_connections", 10); // DEFAULT; when 0, this is limited by "network.http.speculative-parallel-limit"
-user_pref("network.prefetch-next", true); // DEFAULT if using DOH/ODNS
-user_pref("network.predictor.enabled", false);
-user_pref("network.predictor.enable-prefetch", false);
+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
+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("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.showSearchSuggestionsFirst", false); // unselect "Show search suggestions ahead of browsing history in address bar results" for clean UI
-user_pref("browser.urlbar.groupLabels.enabled", false); // hide Firefox Suggest label in URL dropdown box
+//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", "unavailable"); // unselect suggestions from Firefox Relay 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
@@ -48,13 +44,17 @@ user_pref("browser.safebrowsing.downloads.remote.url", ""); // enforce no remote
 user_pref("browser.safebrowsing.downloads.remote.block_potentially_unwanted", false); // clean up UI; not needed in user.js if remote downloads are disabled
 user_pref("browser.safebrowsing.downloads.remote.block_uncommon", false); // clean up UI; not needed in user.js if remote downloads are disabled
 user_pref("browser.safebrowsing.allowOverride", false); // do not allow user to override SB
-user_pref("dom.push.enabled", false); // disable Push API; breaks FF Sync and Site Notifications
 user_pref("browser.search.update", false); // do not update opensearch engines
-user_pref("network.dns.skipTRR-when-parental-control-enabled", false); // bypass parental controls when using DoH
 user_pref("network.trr.confirmationNS", "skip"); // skip TRR confirmation request
 user_pref("extensions.webextensions.restrictedDomains", ""); // remove Mozilla domains so adblocker works on pages
+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

 /** 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  
@@ -62,24 +62,28 @@ user_pref("browser.newtabpage.activity-stream.section.highlights.includeBookmark
 user_pref("browser.newtabpage.activity-stream.section.highlights.includeDownloads", false); // Settings>Home>Firefox Home Content>Recent Activity>Most Recent Download
 user_pref("browser.newtabpage.activity-stream.section.highlights.includeVisited", false); // Settings>Home>Firefox Home Content>Recent Activity>Visited Pages
 user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket", false); // Settings>Home>Firefox Home Content>Recent Activity>Pages Saved to Pocket
-user_pref("browser.download.folderList", 0); // 0=desktop, 1=downloads, 2=last used
+//user_pref("browser.download.useDownloadDir", true); // use direct downloads
+//user_pref("browser.download.folderList", 0); // 0=desktop, 1=downloads, 2=last used
 user_pref("browser.toolbars.bookmarks.visibility", "never"); // always hide bookmark bar
 user_pref("browser.startup.homepage_override.mstone", "ignore"); // What's New page after updates; master switch
-user_pref("browser.translations.autoTranslate", true); // make Firefox auto-translate non-English pages
-user_pref("browser.urlbar.suggest.bookmark", false); // hide URL bar dropdown suggestions
-user_pref("browser.urlbar.suggest.history", false); // hide URL bar dropdown suggestions
-user_pref("browser.urlbar.suggest.openpage", false); // hide URL bar dropdown suggestions
-//user_pref("browser.urlbar.suggest.searches", false); // hide URL bar dropdown suggestions (needed?)
+user_pref("browser.urlbar.suggest.history", false); // Browsing history; hide URL bar dropdown suggestions
+user_pref("browser.urlbar.suggest.bookmark", false); // Bookmarks; hide URL bar dropdown suggestions
+user_pref("browser.urlbar.suggest.openpage", false); // Open tabs; hide URL bar dropdown suggestions
+user_pref("browser.urlbar.suggest.topsites", false); // Shortcuts; disable dropdown suggestions with empty query
+user_pref("browser.urlbar.suggest.engines", false); // Search engines; tab-to-search
+user_pref("browser.urlbar.quicksuggest.enabled", false); // hide Firefox Suggest UI in the settings
 //user_pref("browser.urlbar.maxRichResults", 1); // minimum suggestion needed for URL bar autofill
 user_pref("browser.bookmarks.max_backups", 0); // minimize disk use; manually back-up
 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); // [HIDDEN] 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("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("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
@@ -89,13 +93,16 @@ user_pref("reader.parse-on-load.enabled", false); // disable reader mode
 /** DELETE IF NOT NIGHTLY ***/
 user_pref("privacy.userContext.enabled", false); // disable Containers functionality
 user_pref("browser.crashReports.unsubmittedCheck.enabled", false); // true by default on NIGHTLY
-//user_pref("browser.urlbar.suggest.quickactions", false); // Quick Actions in URL bar
 //user_pref("xpinstall.signatures.required", false); // [ESR/DEV/NIGHTLY]
+//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 except on WINDOWS; enable if not using an integrated GPU
+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("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("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);
@@ -106,10 +113,40 @@ user_pref("gfx.font_rendering.directwrite.use_gdi_table_loading", false);
 //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
-//user_pref("security.family_safety.mode", 0); // disable parental controls [WINDOWS 8-10]
+
+/** DELETE IF NOT ENTERPRISE WINDOWS LAPTOP ***/
+//user_pref("network.trr.mode", 3); // 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("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.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("pdfjs.defaultZoomValue", "page-width"); // LAPTOP; PDF zoom level
+user_pref("network.trr.max-fails", 5); // lower max attempts to use DoH
+user_pref("geo.provider.use_corelocation", false); // geolocation [MAC]
+user_pref("pdfjs.defaultZoomValue", "page-width"); // PDF zoom level
 user_pref("app.update.auto", false); // disable auto-installing Firefox updates [NON-WINDOWS]
 //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
@@ -10,31 +10,23 @@
 /****************************************************************************
 * Betterfox                                                                *
 * "Ad meliora"                                                             *
- * version: 116.1                                                           *
+ * version: 129                                                             *
 * url: https://github.com/yokoffing/Betterfox                              *
 ****************************************************************************/

 /****************************************************************************
 * SECTION: FASTFOX                                                         *
 ****************************************************************************/
-user_pref("nglayout.initialpaint.delay", 0);
-user_pref("nglayout.initialpaint.delay_in_oopif", 0);
+/** GENERAL ***/
 user_pref("content.notify.interval", 100000);
-user_pref("browser.startup.preXulSkeletonUI", false); // WINDOWS
-
-/** EXPERIMENTAL ***/
-user_pref("layout.css.grid-template-masonry-value.enabled", true);
-user_pref("dom.enable_web_task_scheduling", true);
-user_pref("layout.css.has-selector.enabled", true);

 /** GFX ***/
-//user_pref("gfx.canvas.accelerated", true); // enable if using a dedicated GPU on WINDOWS
 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);

-/** BROWSER CACHE ***/
-user_pref("browser.cache.disk.enable", false);
+/** DISK CACHE ***/
+user_pref("browser.cache.jsbc_compression_level", 3);

 /** MEDIA CACHE ***/
 user_pref("media.memory_cache_max_size", 65536);
@@ -45,27 +37,25 @@ user_pref("media.cache_resume_threshold", 3600);
 user_pref("image.mem.decode_bytes_at_a_time", 32768);

 /** NETWORK ***/
-user_pref("network.buffer.cache.size", 262144);
-user_pref("network.buffer.cache.count", 128);
 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.websocket.max-connections", 400);
 user_pref("network.http.pacing.requests.enabled", false);
-user_pref("network.dnsCacheEntries", 10000);
-user_pref("network.dnsCacheExpiration", 86400);
-user_pref("network.dns.max_high_priority_threads", 8);
-user_pref("network.ssl_tokens_cache_capacity", 20480);
+user_pref("network.dnsCacheExpiration", 3600);
+user_pref("network.ssl_tokens_cache_capacity", 10240);

-/** SPECULATIVE CONNECTIONS ***/
-user_pref("network.http.speculative-parallel-limit", 0);
+/** SPECULATIVE LOADING ***/
 user_pref("network.dns.disablePrefetch", true);
-user_pref("browser.urlbar.speculativeConnect.enabled", false);
-user_pref("browser.places.speculativeConnect.enabled", false);
+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);

+/** 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                                                       *
 ****************************************************************************/
@@ -73,15 +63,16 @@ user_pref("network.predictor.enable-prefetch", false);
 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);
-user_pref("privacy.globalprivacycontrol.functionality.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("security.cert_pinning.enforcement_level", 2);

 /** SSL / TLS ***/
 user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
@@ -96,11 +87,15 @@ user_pref("browser.sessionstore.interval", 60000);
 user_pref("privacy.history.custom", 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);
@@ -109,20 +104,16 @@ user_pref("network.IDN_show_punycode", true);
 /** HTTPS-FIRST POLICY ***/
 user_pref("dom.security.https_first", true);

-/** PASSWORDS AND AUTOFILL ***/
-user_pref("signon.rememberSignons", 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);

-/** ADDRESS + CREDIT CARD MANAGER ***/
-user_pref("extensions.formautofill.addresses.enabled", false);
-user_pref("extensions.formautofill.creditCards.enabled", false);
-
 /** MIXED CONTENT + CROSS-SITE ***/
-user_pref("network.auth.subresource-http-auth-allow", 1);
 user_pref("security.mixed_content.block_display_content", true);
 user_pref("pdfjs.enableScripting", false);
 user_pref("extensions.postDownloadThirdPartyPrompt", false);
-user_pref("permissions.delegation.enabled", false);

 /** HEADERS / REFERERS ***/
 user_pref("network.http.referer.XOriginTrimmingPolicy", 2);
@@ -138,16 +129,14 @@ user_pref("media.peerconnection.ice.default_address_only", true);
 user_pref("browser.safebrowsing.downloads.remote.enabled", false);

 /** MOZILLA ***/
-user_pref("accessibility.force_disabled", 1);
-user_pref("identity.fxaccounts.enabled", false);
-user_pref("browser.tabs.firefox-view", false);
 user_pref("permissions.default.desktop-notification", 2);
 user_pref("permissions.default.geo", 2);
-user_pref("geo.provider.network.url", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
 user_pref("permissions.manager.defaultsUrl", "");
 user_pref("webchannel.allowObject.urlWhitelist", "");

 /** TELEMETRY ***/
+user_pref("datareporting.policy.dataSubmissionEnabled", false);
+user_pref("datareporting.healthreport.uploadEnabled", false);
 user_pref("toolkit.telemetry.unified", false);
 user_pref("toolkit.telemetry.enabled", false);
 user_pref("toolkit.telemetry.server", "data:,");
@@ -159,94 +148,98 @@ user_pref("toolkit.telemetry.bhrPing.enabled", false);
 user_pref("toolkit.telemetry.firstShutdownPing.enabled", false);
 user_pref("toolkit.telemetry.coverage.opt-out", true);
 user_pref("toolkit.coverage.opt-out", true);
-user_pref("datareporting.healthreport.uploadEnabled", false);
-user_pref("datareporting.policy.dataSubmissionEnabled", false);
+user_pref("toolkit.coverage.endpoint.base", "");
+user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
+user_pref("browser.newtabpage.activity-stream.telemetry", false);
+
+/** EXPERIMENTS ***/
 user_pref("app.shield.optoutstudies.enabled", false);
-user_pref("browser.discovery.enabled", false);
+user_pref("app.normandy.enabled", false);
+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);
-user_pref("app.normandy.enabled", false);
-user_pref("app.normandy.api_url", "");
-user_pref("browser.ping-centre.telemetry", false);
-user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
-user_pref("browser.newtabpage.activity-stream.telemetry", false);

 /****************************************************************************
 * SECTION: PESKYFOX                                                        *
 ****************************************************************************/
 /** MOZILLA UI ***/
-user_pref("layout.css.prefers-color-scheme.content-override", 2);
-user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true);
-user_pref("app.update.suppressPrompts", true);
-user_pref("browser.compactmode.show", true);
 user_pref("browser.privatebrowsing.vpnpromourl", "");
 user_pref("extensions.getAddons.showPane", false);
 user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);
+user_pref("browser.discovery.enabled", false);
 user_pref("browser.shell.checkDefaultBrowser", false);
 user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false);
 user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false);
 user_pref("browser.preferences.moreFromMozilla", false);
-user_pref("browser.tabs.tabmanager.enabled", false);
 user_pref("browser.aboutConfig.showWarning", false);
 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.privatebrowsing.enable-new-indicator", false);
-user_pref("cookiebanners.service.mode", 2);
-user_pref("cookiebanners.service.mode.privateBrowsing", 2);
-user_pref("browser.translations.enable", true);
+user_pref("browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled", true);

-/** FULLSCREEN ***/
+/** COOKIE BANNER HANDLING ***/
+user_pref("cookiebanners.service.mode", 1);
+user_pref("cookiebanners.service.mode.privateBrowsing", 1);
+
+/** 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.engines", false);
-user_pref("browser.urlbar.suggest.topsites", false);
 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.feeds.section.topstories", false);

-/*** POCKET ***/
+/** POCKET ***/
 user_pref("extensions.pocket.enabled", false);

 /** DOWNLOADS ***/
-user_pref("browser.download.useDownloadDir", false);
-user_pref("browser.download.always_ask_before_handling_new_types", true);
-user_pref("browser.download.alwaysOpenPanel", false);
 user_pref("browser.download.manager.addToRecentDocs", false);

 /** PDF ***/
 user_pref("browser.download.open_pdf_attachments_inline", true);
-user_pref("pdfjs.sidebarViewOnLoad", 2);

 /** TAB BEHAVIOR ***/
-user_pref("browser.tabs.loadBookmarksInTabs", true);
 user_pref("browser.bookmarks.openInTabClosesMenu", false);
 user_pref("browser.menu.showViewImageInfo", true);
 user_pref("findbar.highlightAll", true);
+user_pref("layout.word_select.eat_space_to_next_word", 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                                                       *
 ****************************************************************************/
 // visit https://github.com/yokoffing/Betterfox/blob/main/Smoothfox.js
-// Enter your scrolling prefs below this line:
-
-/****************************************************************************
- * START: MY OVERRIDES                                                      *
-****************************************************************************/
-// Enter your personal prefs below this line:
+// Enter your scrolling overrides below this line:

 /****************************************************************************
 * END: BETTERFOX                                                           *
Author	SHA1	Message	Date
yokoffing	e026ed7d3a	v.129 (#315 )	2024-08-20 22:08:38 -04:00
yokoffing	29f0816962	tab preview pref changes https://github.com/yokoffing/Betterfox/issues/309	2024-07-22 10:19:34 -04:00
yokoffing	c0d65d409d	fix dashes	2024-07-16 13:45:46 -04:00
yokoffing	c5fca2dbf7	v127-128 (#301 )	2024-07-16 10:30:49 -04:00
Hal	9756922ee9	update NTP setting text	2024-05-24 14:23:00 -04:00
Hal	dfb297bbfb	some values need quotation marks https://github.com/yokoffing/Betterfox/issues/294	2024-05-21 09:59:03 -04:00
Hal	cf2c13a45f	v123-126 (#276 )	2024-05-20 14:37:07 -04:00
Hal	c366439145	fix	2024-03-18 18:12:48 -04:00
Hal	bd128d8d56	add counter	2024-03-18 18:11:55 -04:00
Hal	d4f1744b0c	v122.1 (#280 ) * network.buffer.cache.size causes HTML issue	2024-03-13 11:47:02 -04:00
Hal	14de7b101d	v120-122 (#268 )	2024-02-19 12:06:22 -05:00
Hal	27bcd885b7	AF credit	2024-01-30 13:29:18 -05:00
e-tho	64774680a9	fix typo (#273 )	2024-01-26 17:43:37 -05:00
system32.eth	4d23050c74	Update Fastfox.js (#269 ) Missing closing quote on variable	2024-01-03 09:14:15 -05:00
Hal	042bcc1c56	Update README.md https://github.com/yokoffing/Betterfox/issues/266	2023-12-12 09:03:56 -05:00
Hal	396a465b73	GitHub sponsor	2023-11-28 20:50:51 -05:00
Hal	d7a530164e	Create FUNDING.yml	2023-11-28 15:09:38 -05:00
Hal	1653fc9014	fix broken link https://github.com/yokoffing/Betterfox/issues/262	2023-11-22 20:17:38 -05:00
Hal	6657c83ae2	clean up List descriptions	2023-11-12 15:14:19 -05:00
yokoffing	4b75f957f9	v119 (#237 )	2023-11-10 11:44:04 -05:00
yokoffing	52e6deb863	Delete .github/ISSUE_TEMPLATE/feature_request.md	2023-11-06 12:28:48 +00:00
yokoffing	6887c6d2f9	Update bug_report.md	2023-11-06 12:27:21 +00:00
yokoffing	099fe168ba	Update user-overrides.js	2023-10-17 13:17:14 -04:00
HJ	4c0b1791dc	geo-location	2023-09-30 15:42:34 -04:00
HJ	687785a8d3	Update README.md	2023-09-30 00:07:12 -04:00
HJ	b833ea7300	v118 (#235 )	2023-09-29 21:29:34 -04:00
HJ	c574f6057f	Delete personal/test.txt	2023-09-23 17:36:25 -06:00
HJ	4ed949c78b	move personal/user-overrides.js	2023-09-23 17:35:59 -06:00
HJ	dae0e10c1d	Create personal folder	2023-09-23 17:33:50 -06:00
HJ	084b173e07	Delete personal	2023-09-23 17:32:43 -06:00
HJ	d164ac1395	Create personal	2023-09-23 17:32:28 -06:00
HJ	0334bea972	v.117 (#225 )	2023-09-18 12:16:13 -04:00
HJ	726f4d4a6b	add backup to Getting Started	2023-09-08 14:38:29 -04:00