remove some fastfox prefs

browser.startup.homepage_override.mstone

Fastfox.js

@@ -78,6 +78,15 @@ user_pref("content.notify.interval", 100000); // (.10s); default=120000 (.12s)
 // PREF: lazy load iframes
 //user_pref("dom.iframe_lazy_loading.enabled", true); // DEFAULT [FF121+]
 
+// PREF: Prioritized Task Scheduling API 
+// [1] https://github.com/yokoffing/Betterfox/issues/355
+// [2] https://blog.mozilla.org/performance/2022/06/02/prioritized-task-scheduling-api-is-prototyped-in-nightly/
+// [3] https://medium.com/airbnb-engineering/building-a-faster-web-experience-with-the-posttask-scheduler-276b83454e91
+// [4] https://github.com/WICG/scheduling-apis/blob/main/explainers/prioritized-post-task.md
+// [5] https://wicg.github.io/scheduling-apis/
+// [6] https://caniuse.com/mdn-api_taskcontroller
+//user_pref("dom.enable_web_task_scheduling", true); // DEFAULT [FF142+]
+
 /****************************************************************************
  * SECTION: GFX RENDERING TWEAKS                                            *
 ****************************************************************************/
@@ -254,13 +263,14 @@ user_pref("browser.cache.disk.enable", false);
 // that only contains settings for systems at or below 8GB of system memory [1].
 // Waterfox G6 allows it to go above 8GB machines [3].
 // Value can be up to the max size of an unsigned 64-bit integer.
-// -1=Automatically decide the maximum memory to use to cache decoded images,
+// -1 = Automatically decide the maximum memory to use to cache decoded images,
 // messages, and chrome based on the total amount of RAM
+// For machines with 8GB+ RAM, that equals 32768 kb = 32 MB
 // [1] https://kb.mozillazine.org/Browser.cache.memory.capacity#-1
 // [2] https://searchfox.org/mozilla-central/source/netwerk/cache2/CacheObserver.cpp#94-125
 // [3] https://github.com/WaterfoxCo/Waterfox/commit/3fed16932c80a2f6b37d126fe10aed66c7f1c214
-//user_pref("browser.cache.memory.capacity", -1); // DEFAULT; 256000=256 MB; 512000=500 MB; 1048576=1GB, 2097152=2GB
+//user_pref("browser.cache.memory.capacity", 131072); // (128 MB)
-//user_pref("browser.cache.memory.max_entry_size", 10240); // (10 MB); default=5120 (5 MB)
+//user_pref("browser.cache.memory.max_entry_size", 20480); // (20 MB); default=5120 (5 MB)
 
 // PREF: amount of Back/Forward cached pages stored in memory for each tab
 // Pages that were recently visited are stored in memory in such a way
@@ -271,7 +281,7 @@ user_pref("browser.cache.disk.enable", false);
 // is no reason for Firefox to keep memory for this.
 // -1=determine automatically (8 pages)
 // [1] https://kb.mozillazine.org/Browser.sessionhistory.max_total_viewers#Possible_values_and_their_effects
-//user_pref("browser.sessionhistory.max_total_viewers", 4);
+user_pref("browser.sessionhistory.max_total_viewers", 4);
 
 /****************************************************************************
  * SECTION: MEDIA CACHE                                                     *
@@ -403,7 +413,7 @@ user_pref("network.ssl_tokens_cache_capacity", 10240); // default=2048; more TLS
 // [3] https://searchfox.org/mozilla-central/rev/028c68d5f32df54bca4cf96376f79e48dfafdf08/modules/libpref/init/all.js#1280-1282
 // [4] https://www.keycdn.com/blog/resource-hints#prefetch
 // [5] https://3perf.com/blog/link-rels/#prefetch
-//user_pref("network.http.speculative-parallel-limit", 20); // DEFAULT (FF127+?)
+user_pref("network.http.speculative-parallel-limit", 0);
 
 // PREF: DNS prefetching for HTMLLinkElement <link rel="dns-prefetch">
 // Used for cross-origin connections to provide small performance improvements.
@@ -436,11 +446,11 @@ user_pref("network.dns.disablePrefetch", true);
 // [NOTE] Firefox will perform DNS lookup (if enabled) and TCP and TLS handshake,
 // but will not start sending or receiving HTTP data.
 // [1] https://www.ghacks.net/2017/07/24/disable-preloading-firefox-autocomplete-urls/
-//user_pref("browser.urlbar.speculativeConnect.enabled", false);
+user_pref("browser.urlbar.speculativeConnect.enabled", false);
 
 // PREF: mousedown speculative connections on bookmarks and history [FF98+]
 // Whether to warm up network connections for places:menus and places:toolbar.
-//user_pref("browser.places.speculativeConnect.enabled", false);
+user_pref("browser.places.speculativeConnect.enabled", false);
 
 // PREF: network module preload <link rel="modulepreload"> [FF115+]
 // High-priority loading of current page JavaScript modules.
@@ -498,7 +508,7 @@ user_pref("network.prefetch-next", false);
 // When enabled, it trains and uses Firefox's algorithm to preload page resource
 // by tracking past page resources. It uses a local file (history) of needed images,
 // scripts, etc. to request them preemptively when navigating.
-// [NOTE] By default, it only preconnects, doing DNS, TCP, and SSL handshakes.
+// [NOTE] By default, it only preconnects DNS, TCP, and SSL handshakes.
 // No data sends until clicking. With "network.predictor.enable-prefetch" enabled,
 // it also performs prefetches.
 // [1] https://wiki.mozilla.org/Privacy/Reviews/Necko
@@ -542,15 +552,6 @@ user_pref("network.predictor.enabled", false);
 // [2] https://www.smashingmagazine.com/native-css-masonry-layout-css-grid/
 user_pref("layout.css.grid-template-masonry-value.enabled", true);
 
-// PREF: Prioritized Task Scheduling API [NIGHTLY]
-// [1] https://github.com/yokoffing/Betterfox/issues/355
-// [2] https://blog.mozilla.org/performance/2022/06/02/prioritized-task-scheduling-api-is-prototyped-in-nightly/
-// [3] https://medium.com/airbnb-engineering/building-a-faster-web-experience-with-the-posttask-scheduler-276b83454e91
-// [4] https://github.com/WICG/scheduling-apis/blob/main/explainers/prioritized-post-task.md
-// [5] https://wicg.github.io/scheduling-apis/
-// [6] https://caniuse.com/mdn-api_taskcontroller
-//user_pref("dom.enable_web_task_scheduling", true);
-
 /****************************************************************************
  * SECTION: TAB UNLOAD                                                      *
 ****************************************************************************/

Peskyfox.js

@@ -3,7 +3,7 @@
  * Peskyfox                                                                 *
  * "Aquila non capit muscas"                                                *
  * priority: remove annoyances                                              *
- * version: 137                                                             *
+ * version: 142                                                             *
  * 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                          *
@@ -29,14 +29,6 @@ user_pref("extensions.htmlaboutaddons.recommendations.enabled", false);
 // [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to make personalized extension recommendations
 user_pref("browser.discovery.enabled", false);
 
-// PREF: disable Fakespot integration [FF116+]
-// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1840156#c0
-// [2] https://github.com/arkenfox/user.js/issues/1730
-// [3] https://www.fakespot.com/
-// [4] https://www.ghacks.net/2023/10/12/firefox-will-soon-tell-you-if-product-reviews-are-reliable/
-//user_pref("browser.shopping.experience2023.enabled", false); // DEFAULT
-//user_pref("browser.shopping.experience2023.ads.exposure", false); // DEFAULT [FF121+]
-
 // PREF: disable Firefox from asking to set as the default browser
 // [1] https://github.com/yokoffing/Betterfox/issues/166
 user_pref("browser.shell.checkDefaultBrowser", false);
@@ -104,6 +96,23 @@ user_pref("browser.privateWindowSeparation.enabled", false);
 // PREF: new tab page wallpapers
 //user_pref("browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled", true); // [DEFAULT FF132+]
 
+/****************************************************************************
+ * SECTION: AI                                                              *
+****************************************************************************/
+// PREF: AI master switch
+// [1] https://github.com/yokoffing/Betterfox/issues/416
+user_pref("browser.ml.enable", false);
+
+// PREF: AI chat
+user_pref("browser.ml.chat.enabled", false);
+
+// PREF: link previews
+//user_pref("browser.ml.linkPreview.enabled", false);
+
+// PREF: AI-enhanced tab groups
+// [1] https://support.mozilla.org/kb/how-use-ai-enhanced-tab-groups
+//user_pref("browser.tabs.groups.smart.enabled", false);
+
 /****************************************************************************
  * SECTION: COOKIE BANNER HANDLING                                          *
 ****************************************************************************/
@@ -195,7 +204,7 @@ user_pref("browser.urlbar.suggest.engines", false);
 //user_pref("browser.urlbar.suggest.weather", true); // DEFAULT [FF108]
     //user_pref("browser.urlbar.weather.ignoreVPN", false); // DEFAULT
 //user_pref("browser.urlbar.suggest.calculator", true); // [DEFAULT FF137+]
-user_pref("browser.urlbar.unitConversion.enabled", true);
+//user_pref("browser.urlbar.unitConversion.enabled", true); // [DEFAULT FF141+]
 
 // PREF: disable dropdown suggestions with empty query
 //user_pref("browser.urlbar.suggest.topsites", false);
@@ -207,10 +216,11 @@ user_pref("browser.urlbar.trending.featureGate", false);
 
 // PREF: disable urlbar suggestions
 //user_pref("browser.urlbar.addons.featureGate", false); // [FF115+]
+//user_pref("browser.urlbar.amp.featureGate", false); // [FF141+] adMarketplace
 //user_pref("browser.urlbar.fakespot.featureGate", false); // [FF130+] [DEFAULT: false]
 //user_pref("browser.urlbar.mdn.featureGate", false); // [FF117+] [HIDDEN PREF]
-//user_pref("browser.urlbar.pocket.featureGate", false); // [FF116+] [DEFAULT: false]
 //user_pref("browser.urlbar.weather.featureGate", false); // [FF108+] [DEFAULT: false]
+//user_pref("browser.urlbar.wikipedia.featureGate", false); // [FF141+]
 //user_pref("browser.urlbar.clipboard.featureGate", false); // [FF118+] [DEFAULT: true FF125+]
 //user_pref("browser.urlbar.yelp.featureGate", false); // [FF124+] [DEFAULT: false]
 
@@ -238,11 +248,13 @@ user_pref("browser.urlbar.trending.featureGate", false);
 //user_pref("browser.urlbar.maxRichResults", 5); // default=10
 
 // PREF: text fragments
+// [WARNING] Enabling can cause tab crashes [4]
 // [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1753933#c6
 // [2] https://developer.mozilla.org/en-US/docs/Web/Text_fragments
 // [3] https://web.dev/articles/text-fragments
+// [4] https://github.com/yokoffing/Betterfox/issues/397
 //user_pref("dom.text_fragments.enabled", true); // [DEFAULT]
-user_pref("dom.text_fragments.create_text_fragment.enabled", true);
+//user_pref("dom.text_fragments.create_text_fragment.enabled", true);
 
 /****************************************************************************
  * SECTION: AUTOPLAY                                                        *
@@ -290,11 +302,12 @@ user_pref("dom.text_fragments.create_text_fragment.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); // Shortcuts > Sponsored shortcuts [FF83+]
+      user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); // Sponsored shortcuts [FF83+]
 //user_pref("browser.newtabpage.activity-stream.showWeather", false); // Weather [FF130+]
     //user_pref("browser.newtabpage.activity-stream.system.showWeather", false); // hides Weather as an UI option
 user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false); // Recommended by Pocket
-      user_pref("browser.newtabpage.activity-stream.showSponsored", false); // Sponsored Stories [FF58+]  
+user_pref("browser.newtabpage.activity-stream.showSponsored", false); // Sponsored stories [FF58+]  
+user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false); // [FF140+] Support Firefox
 //user_pref("browser.newtabpage.activity-stream.feeds.section.highlights", false); // Recent Activity [DEFAULT]
       //user_pref("browser.newtabpage.activity-stream.section.highlights.includeBookmarks", false);
       //user_pref("browser.newtabpage.activity-stream.section.highlights.includeDownloads", false);

README.md

@@ -1,16 +1,13 @@
-![GitHub Maintained](https://img.shields.io/badge/maintained-yes-green)![GitHub last commit](https://img.shields.io/github/last-commit/yokoffing/betterfox)![GitHub issues](https://img.shields.io/github/issues/yokoffing/betterfox)![GitHub closed issues](https://img.shields.io/github/issues-closed/yokoffing/betterfox)![GitHub repo size](https://img.shields.io/github/repo-size/yokoffing/betterfox)[![shields.io Stars](https://img.shields.io/github/stars/yokoffing/betterfox)](https://github.com/yokoffing/betterfox/stargazers)
+![Badge](https://hitscounter.dev/api/hit?url=https%3A%2F%2Fgithub.com%2Fyokoffing%2FBetterfox&label=&icon=github&color=%23198754&message=&style=flat&tz=US%2FEastern)![GitHub Maintained](https://img.shields.io/badge/maintained-yes-green)![GitHub last commit](https://img.shields.io/github/last-commit/yokoffing/betterfox)![GitHub issues](https://img.shields.io/github/issues/yokoffing/betterfox)![GitHub closed issues](https://img.shields.io/github/issues-closed/yokoffing/betterfox)![GitHub repo size](https://img.shields.io/github/repo-size/yokoffing/betterfox)[![shields.io Stars](https://img.shields.io/github/stars/yokoffing/betterfox)](https://github.com/yokoffing/betterfox/stargazers)
 
-# Betterfox
+# Betterfox 140 ESR
-[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/).
+These prefs are applicable for [Firefox ESR 140.0](https://support.mozilla.org/kb/switch-to-firefox-extended-support-release-esr). <sup>[^more info](https://support.mozilla.org/kb/firefox-esr-release-cycle)</sup>
 
-## Made for everyday browsing
+Using regular Firefox? [Switch back to the main branch](https://github.com/yokoffing/Betterfox).
-[Faster](https://medium.com/@mihirgrand/comparing-popular-firefox-forks-6fa83fdfdaad#:~:text=31%25%20more%20than%20vanilla%20Firefox), more private and secure — without using third-party code.
-
-Betterfox is an opinionated preference list inspired by the [law of diminishing returns](https://miro.medium.com/v2/resize:fit:1206/1*lcOcxriV_II_lZuXQYLoXg.jpeg) and the [minimum effective dose](https://medium.com/the-mission/less-is-more-the-minimum-effective-dose-e6d56625931e).
 
 ## Required reading
 0) Create a [backup profile](https://github.com/yokoffing/Betterfox/wiki/Backup).
-1) Download the user.js file [here](https://raw.githubusercontent.com/yokoffing/Betterfox/main/user.js) (Right click > `Save Link As…`).
+1) Download the user.js file [here](https://raw.githubusercontent.com/yokoffing/Betterfox/esr140/user.js) (Right click > `Save Link As…`).
 2) Review both [Common Overrides](https://github.com/yokoffing/Betterfox/wiki/Common-Overrides) and [Optional Hardening](https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening) to make any necessary changes.
 3) Open Firefox. In the URL bar, type `about:profiles` and press **Enter**.
 4) For the profile you want to use, click **Open Folder** in the **Root Directory** section.
@@ -20,74 +17,6 @@ Betterfox is an opinionated preference list inspired by the [law of diminishing
 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 your chosen [provider](https://github.com/yokoffing/Betterfox/wiki/Optional-Hardening#secure-dns) to further protect against security threats, ads, and trackers.
 
-## Simple goals
-1) **Minimalism:** get what isn't needed out of the way
-2) **Efficiency:** unleash Firefox's ability to be fast and performant
-3) **Privacy:** protect your data without causing site breakage
-
-## Simple configs
-
-`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.
-
-| 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
-> [!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/stable/src/browser/app/profile/zen-browser.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
-* [A Better Firefox](https://youtu.be/JuHIwCFx34Q?si=1dx39t3HX5kzNVj-&t=133) (Mar 2025)
-* [Ditch Chrome for One Of These BETTER BROWSERS!](https://youtu.be/ygkxFc8SZlc?si=m5NQe-b_oFXs5crb&t=230) (Aug 2024)
-* [The ULTIMATE Browser Tier List](https://youtu.be/j5r6jFE8gic?t=560) (Mar 2023)
-* [I Hate Firefox. But I'm Still Switching Back to It.](https://youtu.be/w0SJFED5xK0?t=220) (Nov 2022)
-* [Español] [Optimize and Accelerate Firefox](https://www.youtube.com/watch?v=3XtoONmq5_Q) (Nov 2022) 
-* [How To Improve Firefox Performance](https://www.youtube.com/watch?v=N8IOJiOFVEk) (Dec 2021)
-
-### Podcasts
-* [Italian] [Digitalia.fm](https://digitalia.fm/684/) | 1:41:35–1:42:41 (July 2023)
-* [GhoSTORIES with Franz & Pete](https://anchor.fm/ghostories/episodes/S2E6-We-Talking-Ghostery-Dawn----Again-er0q02/a-a4o5vmh) | 17:05–18:40 (Feb 2021)
-
-### Articles
-* [Español] [Firefox is an excellent browser, but this small modification makes it much faster and more private](https://www.genbeta.com/a-fondo/firefox-excelente-navegador-esta-pequena-modificacion-hace-mucho-rapido-privado-asi-funciona-betterfox) (Jan 2025)
-* [Browsers for Daily Use](https://anhkhoakz.neocities.org/blog/browsers-for-daily-using/#firefox-but-hardened) (Jan 2024)
-* [Avoiding Manifest V3 – Escaping the Ad-Pocalypse](https://www.xbitlabs.com/avoiding-manifest-v3/) (Dec 2023)
-* [German] [Pulse Browser Review: Firefox fork with Turbo tweaks and Opera sidebar](https://www.computerbild.de/artikel/cb-Tipps-Software-Pulse-Browser-Review-ein-Firefox-Fork-mit-Seitenleiste-wie-bei-Opera-35644139.html#:~:text=Noch%20mehr%20Speed%2DFeatures) (Apr 2023)
-* [2023 Browser Showdown: Comparing Chrome, Brave, Firefox, Vivaldi, and Opera](https://www.appdate.lk/technology/2023-browser-showdown/) (Jan 2023)
-
-### Guides
-* [FMHY Browser Tools: Privacy Tweaks](https://www.reddit.com/r/FREEMEDIAHECKYEAH/wiki/storage/#wiki_privacy_based_browsers)
-* [Firefox-UI-Fix](https://github.com/black7375/Firefox-UI-Fix/wiki/Tips#privacy)
-* [Narsil/desktop_user.js](https://git.nixnet.services/Narsil/desktop_user.js#thanks)
-* [pyllyukko/user.js](https://github.com/pyllyukko/user.js) [comparator](https://jm42.github.io/compare-user.js/)
-
-### Reviews
-* “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!" - [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
 
 If you like the project, leave a :star: (top right) and become a [stargazer](https://github.com/yokoffing/Betterfox/stargazers)!
@@ -103,7 +32,3 @@ If you like the project, leave a :star: (top right) and become a [stargazer](htt
 * Thanks to [Denperidge](https://github.com/Denperidge) for adding [`install.py`](https://github.com/yokoffing/Betterfox/blob/main/install.py) for advanced users in v.131.
 * A special thanks to [Alex Kontos](https://github.com/MrAlex94) of [Waterfox](https://github.com/WaterfoxCo/Waterfox) for his collaboration in v.116.
 * Many thanks to the 2021 [Ghostery](https://github.com/ghostery) team for testing Betterfox at scale in its early days.
-
-<div align='center'>
-  <a href='https://www.websitecounterfree.com'><img src='https://www.websitecounterfree.com/c.php?d=9&id=19653&s=1' border='0' alt='Free Website Counter'></a><br / >
-since 23 July 2022</div>

Securefox.js

@@ -3,7 +3,7 @@
  * Securefox                                                                *
  * "Natura non contristatur"                                                *     
  * priority: provide sensible security and privacy                          *
- * version: 137                                                             *
+ * version: 142                                                             *
  * url: https://github.com/yokoffing/Betterfox                              *
  * credit: Most prefs are reproduced and adapted from the arkenfox project  *
  * credit urL: https://github.com/arkenfox/user.js                          *
@@ -22,6 +22,9 @@
 // [1] https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
 // [2] https://www.reddit.com/r/firefox/comments/l7xetb/network_priority_for_firefoxs_enhanced_tracking/gle2mqn/?web2x&context=3
 user_pref("browser.contentblocking.category", "strict"); // [HIDDEN]
+// [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1970647
+user_pref("privacy.trackingprotection.allow_list.baseline.enabled", true); // [FF142+]
+user_pref("privacy.trackingprotection.allow_list.convenience.enabled", true); // [FF142+]
 //user_pref("privacy.trackingprotection.enabled", true); // enabled with "Strict"
 //user_pref("privacy.trackingprotection.pbmode.enabled", true); // DEFAULT
 //user_pref("browser.contentblocking.customBlockList.preferences.ui.enabled", false); // DEFAULT
@@ -61,7 +64,7 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN]
 // [2] https://www.youtube.com/watch?v=VE8SrClOTgw
 // [3] https://searchfox.org/mozilla-central/source/browser/extensions/webcompat/data/shims.js
 //user_pref("extensions.webcompat.enable_shims", true); // [HIDDEN] enabled with "Strict"
-//user_pref("extensions.webcompat.smartblockEmbeds.enabled", true); // enabled with "Strict"
+//user_pref("extensions.webcompat.smartblockEmbeds.enabled", true); // [DEFAULT FF137+]
 
 // PREF: allow embedded tweets and reddit posts [FF136+]
 // [TEST - reddit embed] https://www.pcgamer.com/amazing-halo-infinite-bugs-are-already-rolling-in/
@@ -71,6 +74,7 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN]
 // [TEST - truthsocial embed] https://www.newsweek.com/donald-trump-congratulates-patrick-brittany-mahomes-new-baby-2027097
 // [1] https://www.reddit.com/r/firefox/comments/l79nxy/firefox_dev_is_ignoring_social_tracking_preference/gl84ukk
 // [2] https://www.reddit.com/r/firefox/comments/pvds9m/reddit_embeds_not_loading/
+// [3] https://github.com/yokoffing/Betterfox/issues/413
 //user_pref("urlclassifier.trackingSkipURLs", "embed.reddit.com, *.twitter.com, *.twimg.com"); // MANUAL [FF136+]
 //user_pref("urlclassifier.features.socialtracking.skipURLs", "*.twitter.com, *.twimg.com"); // MANUAL [FF136+]
 
@@ -121,6 +125,7 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN]
 // [5] https://hacks.mozilla.org/2021/02/introducing-state-partitioning/
 // [6] https://github.com/arkenfox/user.js/issues/1281
 // [7] https://hacks.mozilla.org/2022/02/improving-the-storage-access-api-in-firefox/
+// [8] https://blog.includesecurity.com/2025/04/cross-site-websocket-hijacking-exploitation-in-2025/
 //user_pref("network.cookie.cookieBehavior", 5); // DEFAULT FF103+
 //user_pref("network.cookie.cookieBehavior.optInPartitioning", true); // [ETP FF132+]
 //user_pref("browser.contentblocking.reject-and-isolate-cookies.preferences.ui.enabled", true); // DEFAULT
@@ -166,6 +171,7 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN]
 // [6] https://web.dev/samesite-cookies-explained/
 // [7] https://portswigger.net/web-security/csrf/bypassing-samesite-restrictions
 // [8] https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies
+// [9] https://blog.includesecurity.com/2025/04/cross-site-websocket-hijacking-exploitation-in-2025/
 // [TEST] https://samesite-sandbox.glitch.me/
 //user_pref("network.cookie.sameSite.laxByDefault", true);
 //user_pref("network.cookie.sameSite.noneRequiresSecure", true); // [DEFAULT FF131+]
@@ -314,6 +320,13 @@ user_pref("security.pki.crlite_mode", 2);
 //user_pref("browser.contentanalysis.enabled", false); // [FF121+] [DEFAULT]
 //user_pref("browser.contentanalysis.default_result", 0; // [FF127+] [DEFAULT]
 
+// PREF: disable referrer and storage access for resources injected by content scripts [FF139+]
+//user_pref("privacy.antitracking.isolateContentScriptResources", true);
+
+// PREF: disable CSP Level 2 Reporting [FF140+]
+// [1] https://github.com/yokoffing/Betterfox/issues/415
+user_pref("security.csp.reporting.enabled", false);
+
 /****************************************************************************
  * SECTION: SSL (Secure Sockets Layer) / TLS (Transport Layer Security)    *
 ****************************************************************************/
@@ -580,11 +593,13 @@ user_pref("browser.search.separatePrivateDefault.ui.enabled", true);
     //user_pref("browser.search.separatePrivateDefault", true); // DEFAULT
 
 // PREF: enable option to add custom search engine
+// Before FF140, this pref was hidden.
 // [SETTINGS] Settings -> Search -> Search Shortcuts -> Add
 // [EXAMPLE] https://search.brave.com/search?q=%s
 // [EXAMPLE] https://lite.duckduckgo.com/lite/?q=%s
 // [1] https://reddit.com/r/firefox/comments/xkzswb/adding_firefox_search_engine_manually/
-user_pref("browser.urlbar.update2.engineAliasRefresh", true); // HIDDEN
+// [2] https://www.mozilla.org/en-US/firefox/140.0/releasenotes/
+//user_pref("browser.urlbar.update2.engineAliasRefresh", true); // [DEFAULT FF140+]
 
 // PREF: disable live search suggestions (Google, Bing, etc.)
 // [WARNING] Search engines keylog every character you type from the URL bar.
@@ -660,6 +675,7 @@ user_pref("network.IDN_show_punycode", true);
 // [4] https://web.dev/why-https-matters/
 // [5] https://www.cloudflare.com/learning/ssl/why-use-https/
 // [6] https://blog.chromium.org/2023/08/towards-https-by-default.html
+// [7] https://attackanddefense.dev/2025/03/31/https-first-in-firefox-136.html
 //user_pref("dom.security.https_first", true); // [DEFAULT FF136+]
 //user_pref("dom.security.https_first_pbm", true); // [DEFAULT FF91+]
 //user_pref("dom.security.https_first_schemeless", true); // [FF120+] [DEFAULT FF129+]
@@ -887,10 +903,11 @@ user_pref("signon.privateBrowsingCapture.enabled", false);
 
 // PREF: limit (or disable) HTTP authentication credentials dialogs triggered by sub-resources [FF41+]
 // Hardens against potential credentials phishing.
+// [WARNING] Hardening this pref may prevent you from subscribing to SoGo calendars in Thunderbird 138
 // 0=don't allow sub-resources to open HTTP authentication credentials dialogs
 // 1=don't allow cross-origin sub-resources to open HTTP authentication credentials dialogs
 // 2=allow sub-resources to open HTTP authentication credentials dialogs (default)
-// [1] https://www.fxsitecompat.com/en-CA/docs/2015/http-auth-dialog-can-no-longer-be-triggered-by-cross-origin-resources/
+// [1] https://web.archive.org/web/20181123134351/https://www.fxsitecompat.com/en-CA/docs/2015/http-auth-dialog-can-no-longer-be-triggered-by-cross-origin-resources/
 user_pref("network.auth.subresource-http-auth-allow", 1);
 
 // PREF: prevent password truncation when submitting form data
@@ -973,9 +990,9 @@ user_pref("extensions.enabledScopes", 5); // [HIDDEN PREF]
 // Users may see a notification when running add-ons that are not monitored by Mozilla when they visit certain sites.
 // The notification informs them that “some extensions are not allowed” and were blocked from running on that site.
 // There's no details as to which sites are affected.
-// [1] https://support.mozilla.org/en-US/kb/quarantined-domains
+// [1] https://support.mozilla.org/kb/quarantined-domains
 // [2] https://www.ghacks.net/2023/07/04/firefox-115-new-esr-base-and-some-add-ons-may-be-blocked-from-running-on-certain-sites/
-//user_pref("extensions.quarantinedDomains.enabled", false);
+//user_pref("extensions.quarantinedDomains.enabled", true); // [DEFAULT: true]
 
 /******************************************************************************
  * SECTION: HEADERS / REFERERS                                               *
@@ -1269,6 +1286,8 @@ user_pref("browser.safebrowsing.downloads.remote.enabled", false);
 // To add site exceptions: Page Info>Permissions>Receive Notifications
 // To manage site exceptions: Options>Privacy & Security>Permissions>Notifications>Settings
 // 0=always ask (default), 1=allow, 2=block
+// [1] https://easylinuxtipsproject.blogspot.com/p/security.html#ID5
+// [2] https://github.com/yokoffing/Betterfox/wiki/Common-Overrides#site-notifications
 user_pref("permissions.default.desktop-notification", 2);
    
 // PREF: default permission for Location Requests
@@ -1322,6 +1341,10 @@ user_pref("permissions.manager.defaultsUrl", "");
 // PREF: remove webchannel whitelist
 //user_pref("webchannel.allowObject.urlWhitelist", ""); // [DEFAULT FF132+]
 
+// PREF: disable metadata caching for installed add-ons by default
+// [1] https://blog.mozilla.org/addons/how-to-opt-out-of-add-on-metadata-updates/
+user_pref("extensions.getAddons.cache.enabled", false);
+
 /******************************************************************************
  * SECTION: TELEMETRY                                                   *
 ******************************************************************************/
@@ -1363,8 +1386,7 @@ user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
 user_pref("browser.newtabpage.activity-stream.telemetry", false);
 
 // PREF: disable daily active users [FF136+]
-// [NOTE] Already disabled by main telemetry switch
+user_pref("datareporting.usage.uploadEnabled", false);
-//user_pref("datareporting.usage.uploadEnabled", false);
 
 /******************************************************************************
  * SECTION: EXPERIMENTS                                                      *
@@ -1398,15 +1420,16 @@ user_pref("browser.tabs.crashReporting.sendReport", false);
 ******************************************************************************/
 
 // PREF: disable Captive Portal detection
+// [WARNING] Do NOT use for mobile devices. May NOT be able to use Firefox on public wifi (hotels, coffee shops, etc).
 // [1] https://www.eff.org/deeplinks/2017/08/how-captive-portals-interfere-wireless-security-and-privacy
 // [2] https://wiki.mozilla.org/Necko/CaptivePortal
-user_pref("captivedetect.canonicalURL", "");
+//user_pref("captivedetect.canonicalURL", "");
-user_pref("network.captive-portal-service.enabled", false);
+//user_pref("network.captive-portal-service.enabled", false);
 
 // PREF: disable Network Connectivity checks
 // [WARNING] Do NOT use for mobile devices. May NOT be able to use Firefox on public wifi (hotels, coffee shops, etc).
 // [1] https://bugzilla.mozilla.org/1460537
-user_pref("network.connectivity-service.enabled", false);
+//user_pref("network.connectivity-service.enabled", false);
 
 // PREF: disable Privacy-Preserving Attribution [FF128+]
 // [NOTE] PPA disabled if main telemetry switches are disabled.

install.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 from datetime import datetime
 from os import name, getenv
 from json import loads
@@ -43,23 +45,51 @@ If there's any problems with the script, feel free to mention @Denperidge on Git
 re_find_version = compile(r"mozilla.org/.*?/firefox/(?P<version>[\d.]*?)/", IGNORECASE)
 re_find_overrides = r"(overrides|prefs).*\n(?P<space>\n)"
 
-FIREFOX_ROOT = Path.home().joinpath(".mozilla/firefox").absolute() if name != "nt" else Path(getenv("APPDATA") + "/Mozilla/Firefox/").resolve()
+INSTALLATIONS_TO_CHECK = [
-DEFAULT_FIREFOX_INSTALL = Path("C:/Program Files/Mozilla Firefox/" if name == "nt" else "")
+    # windows
-
+    {
-selected_if_backup = None
+        "command": [str(Path("C:/Program Files/Mozilla Firefox/firefox"))],
-selected_config = ""
+        "root": Path(getenv("APPDATA") or "").joinpath("Mozilla/Firefox").resolve(),
-userjs_path = None
+    },
+    {
+        "command": [str(Path(getenv("LOCALAPPDATA") or "").joinpath("Mozilla Firefox/firefox").resolve())],
+        "root": Path(getenv("APPDATA") or "").joinpath("Mozilla/Firefox").resolve(),
+    },
+    # linux
+    {
+        "command": ["firefox"],
+        "root": Path.home().joinpath(".mozilla/firefox").absolute(),
+    },
+    # flatpak
+    {
+        "command": ["flatpak", "run", "org.mozilla.firefox"],
+        "root": Path.home().joinpath(".var/app/org.mozilla.firefox/.mozilla/firefox").absolute(),
+    },
+]
 
 
-def _get_firefox_version(bin="firefox"):
+# command is a list, eg. ["firefox"] or ["flatpak", "run", "org.mozilla.firefox"]
-    try:
+def _get_firefox_version(command):
-        ver_string = check_output([bin, "--version"], encoding="UTF-8")
+    ver_string = check_output(command + ["--version"], encoding="UTF-8")
     return ver_string[ver_string.rindex(" ")+1:].strip()
-    except FileNotFoundError:
-        return _get_firefox_version(str(DEFAULT_FIREFOX_INSTALL.joinpath("firefox")))
 
-def _get_default_profile_folder():
+def _get_default_firefox_version_and_root():
-    config_path = FIREFOX_ROOT.joinpath("profiles.ini")
+    print("Searching for Firefox installation...")
+    for installation in INSTALLATIONS_TO_CHECK:
+        try:
+            print(f"  '{' '.join(installation['command'])}': ", end="")
+            version = _get_firefox_version(installation["command"])
+            print("YES")
+            print(f"Root: {installation['root']}")
+            return version, installation["root"]
+        except Exception:
+            print("no")
+            continue
+    
+    raise Exception("Firefox binary not found. Please ensure Firefox is installed and the path is correct.")
+
+def _get_default_profile_folder(firefox_root):
+    config_path = firefox_root.joinpath("profiles.ini")
     
     print(f"Reading {config_path}...")
 
@@ -82,7 +112,7 @@ def _get_default_profile_folder():
                 break
     
     if path is not None:
-        return FIREFOX_ROOT.joinpath(path)
+        return firefox_root.joinpath(path)
     else:
         raise Exception("Could not determine default Firefox profile! Exiting...")
 
@@ -123,16 +153,6 @@ def _get_latest_compatible_release(releases):
         if firefox_version in release["supported"]:
             return release
     return None
-def _get_firefox_version(bin="firefox"):
-    try:
-        ver_string = check_output([bin, "--version"], encoding="UTF-8")
-        return ver_string[ver_string.rindex(" ")+1:].strip()
-    except FileNotFoundError:
-        default_path = str(DEFAULT_FIREFOX_INSTALL.joinpath("firefox"))
-        if bin != default_path:  # Avoid infinite recursion
-            return _get_firefox_version(default_path)
-        else:
-            raise Exception("Firefox binary not found. Please ensure Firefox is installed and the path is correct.")    
 
 def backup_profile(src):
     dest = f"{src}-backup-{datetime.today().strftime('%Y-%m-%d-%H-%M-%S')}"
@@ -150,6 +170,8 @@ def extract_betterfox(data, profile_folder):
     zipfile = ZipFile(data)
     userjs_zipinfo = None
     for file in zipfile.filelist:
+        if "/zen/" in file.filename and not args.zen:
+            continue
         if file.filename.endswith("user.js"):
             userjs_zipinfo = file
             userjs_zipinfo.filename = Path(userjs_zipinfo.filename).name
@@ -176,16 +198,20 @@ def list_releases(releases, only_supported=False, add_index=False):
             print(f"{f'[{i}]' if add_index else ''}{'> ' if supported else '  '}{release['name'].ljust(20)}\t\t\tSupported: {','.join(release['supported'])}")
         i+=1
 
+def _press_enter_to_exit(args):
+    if not args.no_wait_for_exit:
+        input("Press ENTER to exit...")
 
 if __name__ == "__main__":
-    firefox_version = _get_firefox_version()
+    firefox_version, firefox_root = _get_default_firefox_version_and_root()
-    selected_release = None
+
+    default_profile_folder = _get_default_profile_folder(firefox_root)
 
-    default_profile_folder = _get_default_profile_folder()
     argparser = ArgumentParser(
 
     )
     argparser.add_argument("--overrides", "-o", default=default_profile_folder.joinpath("user-overrides.js"), help="if the provided file exists, add overrides to user.js. Defaults to " + str(default_profile_folder.joinpath("user-overrides.js"))),
+    argparser.add_argument("--zen", "-z", action="store_true", default=False, help="Install user.js for the Zen browser instead. Defaults to False"),
     
     
     advanced = argparser.add_argument_group("Advanced")
@@ -203,14 +229,17 @@ if __name__ == "__main__":
     modes.add_argument("--list-all", action="store_true", default=False, help=f"List all Betterfox releases")
     modes.add_argument("--interactive", "-i", action="store_true", default=False, help=f"Interactively select Betterfox version")
 
+    behaviour = argparser.add_argument_group("Script behaviour")
+    behaviour.add_argument("--no-wait-for-exit", "-nwfe", action="store_true", default=False, help="Disable 'Press ENTER to exit...' and exit immediately"),
+
     args = argparser.parse_args()
 
     releases = _get_releases(args.repository_owner, args.repository_name)
-
+    selected_release = None
 
     if args.list or args.list_all:
         list_releases(releases, args.list)
-        input("Press ENTER to exit...")
+        _press_enter_to_exit(args)
         exit()
 
     if not args.no_backup:
@@ -261,5 +290,5 @@ if __name__ == "__main__":
         else:
             print(f"Found no overrides in {args.overrides}")
 
-    input("Press ENTER to exit...")
+    _press_enter_to_exit(args)
 

personal/user-overrides.js

@@ -19,7 +19,16 @@
 
 /** FASTFOX ***/
 user_pref("browser.sessionstore.restore_pinned_tabs_on_demand", true);
-user_pref("browser.sessionhistory.max_total_viewers", 4); // only remember # of pages in Back-Forward cache
+
+// SPECULATIVE LOADING WITHOUT PREDICTOR
+user_pref("network.http.speculative-parallel-limit", 20);
+//user_pref("network.dns.disablePrefetch", false);
+//user_pref("network.dns.disablePrefetchFromHTTPS", false);
+//user_pref("dom.prefetch_dns_for_anchor_https_document", true); 
+user_pref("browser.urlbar.speculativeConnect.enabled", true);
+user_pref("browser.places.speculativeConnect.enabled", true);
+user_pref("network.prefetch-next", true);
+
 user_pref("network.http.max-persistent-connections-per-server", 20); // increase download connections
 
 /** SECUREFOX ***/
@@ -45,6 +54,9 @@ user_pref("identity.fxaccounts.enabled", false); // disable Firefox Sync
 user_pref("browser.firefox-view.feature-tour", "{\"screen\":\"\",\"complete\":true}"); // disable the Firefox View tour from popping up for new profiles
 user_pref("accessibility.force_disabled", 1); // disable Accessibility features
 user_pref("security.cert_pinning.enforcement_level", 2); // strict public key pinning
+user_pref("captivedetect.canonicalURL", ""); // disable captive portal detection
+user_pref("network.captive-portal-service.enabled", false); // disable captive portal detection
+user_pref("network.connectivity-service.enabled", false); // disable captive portal detection
 
 /** PESKYFOX ***/
 user_pref("devtools.accessibility.enabled", false); // removes un-needed "Inspect Accessibility Properties" on right-click

user.js

@@ -10,20 +10,13 @@
 /****************************************************************************
  * Betterfox                                                                *
  * "Ad meliora"                                                             *
- * version: 137                                                             *
+ * version: 140.8 ESR                                                       *
  * url: https://github.com/yokoffing/Betterfox                              *
 ****************************************************************************/
 
 /****************************************************************************
  * SECTION: FASTFOX                                                         *
 ****************************************************************************/
-/** GENERAL ***/
-user_pref("content.notify.interval", 100000);
-
-/** GFX ***/
-user_pref("gfx.canvas.accelerated.cache-size", 512);
-user_pref("gfx.content.skia-font-cache-size", 20);
-
 /** DISK CACHE ***/
 user_pref("browser.cache.disk.enable", false);
 
@@ -32,26 +25,14 @@ user_pref("media.memory_cache_max_size", 65536);
 user_pref("media.cache_readahead_limit", 7200);
 user_pref("media.cache_resume_threshold", 3600);
 
-/** IMAGE CACHE ***/
-user_pref("image.mem.decode_bytes_at_a_time", 32768);
-
-/** NETWORK ***/
-user_pref("network.http.max-connections", 1800);
-user_pref("network.http.max-persistent-connections-per-server", 10);
-user_pref("network.http.max-urgent-start-excessive-connections-per-host", 5);
-user_pref("network.http.pacing.requests.enabled", false);
-user_pref("network.dnsCacheExpiration", 3600);
-user_pref("network.ssl_tokens_cache_capacity", 10240);
-
 /** SPECULATIVE LOADING ***/
+user_pref("network.http.speculative-parallel-limit", 0);
 user_pref("network.dns.disablePrefetch", true);
 user_pref("network.dns.disablePrefetchFromHTTPS", true);
+user_pref("browser.urlbar.speculativeConnect.enabled", false);
+user_pref("browser.places.speculativeConnect.enabled", false);
 user_pref("network.prefetch-next", false);
 user_pref("network.predictor.enabled", false);
-user_pref("network.predictor.enable-prefetch", false);
-
-/** EXPERIMENTAL ***/
-user_pref("layout.css.grid-template-masonry-value.enabled", true);
 
 /****************************************************************************
  * SECTION: SECUREFOX                                                       *
@@ -66,6 +47,7 @@ user_pref("privacy.globalprivacycontrol.enabled", true);
 /** OCSP & CERTS / HPKP ***/
 user_pref("security.OCSP.enabled", 0);
 user_pref("security.pki.crlite_mode", 2);
+user_pref("security.csp.reporting.enabled", false);
 
 /** SSL / TLS ***/
 user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
@@ -84,7 +66,6 @@ user_pref("privacy.history.custom", true);
 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.groupLabels.enabled", false);
@@ -119,6 +100,7 @@ user_pref("permissions.default.geo", 2);
 user_pref("geo.provider.network.url", "https://beacondb.net/v1/geolocate");
 user_pref("browser.search.update", false);
 user_pref("permissions.manager.defaultsUrl", "");
+user_pref("extensions.getAddons.cache.enabled", false);
 
 /** TELEMETRY ***/
 user_pref("datareporting.policy.dataSubmissionEnabled", false);
@@ -137,6 +119,7 @@ user_pref("toolkit.coverage.opt-out", true);
 user_pref("toolkit.coverage.endpoint.base", "");
 user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
 user_pref("browser.newtabpage.activity-stream.telemetry", false);
+user_pref("datareporting.usage.uploadEnabled", false);
 
 /** EXPERIMENTS ***/
 user_pref("app.shield.optoutstudies.enabled", false);
@@ -147,11 +130,6 @@ user_pref("app.normandy.api_url", "");
 user_pref("breakpad.reportURL", "");
 user_pref("browser.tabs.crashReporting.sendReport", false);
 
-/** DETECTION ***/
-user_pref("captivedetect.canonicalURL", "");
-user_pref("network.captive-portal-service.enabled", false);
-user_pref("network.connectivity-service.enabled", false);
-
 /****************************************************************************
  * SECTION: PESKYFOX                                                        *
 ****************************************************************************/
@@ -165,6 +143,7 @@ user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", fa
 user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false);
 user_pref("browser.preferences.moreFromMozilla", false);
 user_pref("browser.aboutConfig.showWarning", false);
+user_pref("browser.startup.homepage_override.mstone", "ignore");
 user_pref("browser.aboutwelcome.enabled", false);
 user_pref("browser.profiles.enabled", true);
 
@@ -173,21 +152,24 @@ user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true);
 user_pref("browser.compactmode.show", true);
 user_pref("browser.privateWindowSeparation.enabled", false); // WINDOWS
 
+/** AI ***/
+user_pref("browser.ml.enable", false);
+user_pref("browser.ml.chat.enabled", false);
+
 /** FULLSCREEN NOTICE ***/
 user_pref("full-screen-api.transition-duration.enter", "0 0");
 user_pref("full-screen-api.transition-duration.leave", "0 0");
 user_pref("full-screen-api.warning.timeout", 0);
 
 /** URL BAR ***/
-user_pref("browser.urlbar.unitConversion.enabled", true);
 user_pref("browser.urlbar.trending.featureGate", false);
-user_pref("dom.text_fragments.create_text_fragment.enabled", true);
 
 /** NEW TAB PAGE ***/
 user_pref("browser.newtabpage.activity-stream.default.sites", "");
 user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false);
 user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
 user_pref("browser.newtabpage.activity-stream.showSponsored", false);
+user_pref("browser.newtabpage.activity-stream.showSponsoredCheckboxes", false);
 
 /** POCKET ***/
 user_pref("extensions.pocket.enabled", false);
@@ -224,3 +206,4 @@ user_pref("layout.word_select.eat_space_to_next_word", false);
 /****************************************************************************
  * END: BETTERFOX                                                           *
 ****************************************************************************/
+

zen/user.js

@@ -10,7 +10,7 @@
 /****************************************************************************
  * BetterZen                                                                *
  * "Ex nihilo nihil fit"                                                    *
- * version: 137                                                             *
+ * version: 142                                                             *
  * url: https://github.com/yokoffing/Betterfox                              *
 ****************************************************************************/
 
@@ -18,7 +18,6 @@
  * SECTION: FASTFOX                                                         *
 ****************************************************************************/
 /** GFX ***/
-user_pref("gfx.canvas.accelerated.cache-items", 8192); // DEFAULT FF135+
 user_pref("gfx.canvas.accelerated.cache-size", 512);
 
 /** DISK CACHE ***/
@@ -39,6 +38,8 @@ user_pref("network.predictor.enable-prefetch", false);
 ****************************************************************************/
 /** TRACKING PROTECTION ***/
 user_pref("browser.contentblocking.category", "strict");
+user_pref("privacy.trackingprotection.allow_list.baseline.enabled", true);
+user_pref("privacy.trackingprotection.allow_list.convenience.enabled", true);
 user_pref("browser.download.start_downloads_in_tmp_dir", true);
 
 /** OCSP & CERTS / HPKP ***/
@@ -91,10 +92,6 @@ user_pref("dom.text_fragments.create_text_fragment.enabled", true);
 ****************************************************************************/
 // Remove the slashes to enable the prefs
 
-// PREF: reduce CPU and GPU use until bug is fixed
-// [1] https://github.com/zen-browser/desktop/issues/6302
-user_pref("zen.view.experimental-rounded-view", false);
-
 // PREF: re-enable Windows efficiency mode
 //user_pref("dom.ipc.processPriorityManager.backgroundUsesEcoQoS", true);
 
@@ -105,6 +102,9 @@ user_pref("zen.view.experimental-rounded-view", false);
 // Currently bugged if you click to view what's blocked
 //user_pref("zen.urlbar.show-protections-icon", true);
 
+// PREF: Disable the Picture in picture pop-out when changing tabs
+//user_pref("media.videocontrols.picture-in-picture.enable-when-switching-tabs.enabled", false);
+
 /****************************************************************************
  * START: MY OVERRIDES                                                      *
 ****************************************************************************/