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@ -1,8 +1,7 @@
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/******
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* name: ghacks user.js
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* date: 20 Jul 2020
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* version 78-beta
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* authors: v52+ github | v51- www.ghacks.net
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* date: 13 Aug 2020
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* version 79
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* url: https://github.com/ghacksuserjs/ghacks-user.js
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* license: MIT: https://github.com/ghacksuserjs/ghacks-user.js/blob/master/LICENSE.txt
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@ -165,6 +164,13 @@ user_pref("geo.provider.use_gpsd", false); // [LINUX]
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* i.e. ignore all of Mozilla's various search engines in multiple locales ***/
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user_pref("browser.search.geoSpecificDefaults", false);
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user_pref("browser.search.geoSpecificDefaults.url", "");
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/* 0207: disable region updates
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* [1] https://firefox-source-docs.mozilla.org/toolkit/modules/toolkit_modules/Region.html ***/
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user_pref("browser.region.network.url", ""); // [FF78+]
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user_pref("browser.region.update.enabled", false); // [[FF79+]
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/* 0208: set search region
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* [NOTE] May not be hidden if Firefox has changed your settings due to your region (see 0207) ***/
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// user_pref("browser.search.region", "US"); // [HIDDEN PREF]
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/** LANGUAGE / LOCALE ***/
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/* 0210: set preferred language for displaying web pages
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@ -175,13 +181,6 @@ user_pref("intl.accept_languages", "en-US, en");
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* [1] https://bugzilla.mozilla.org/867501
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* [2] https://bugzilla.mozilla.org/1629630 ***/
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user_pref("javascript.use_us_english_locale", true); // [HIDDEN PREF]
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/* 0212: enforce fallback text encoding to match en-US
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* When the content or server doesn't declare a charset the browser will
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* fallback to the "Current locale" based on your application language
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* [SETTING] General>Language and Appearance>Fonts and Colors>Advanced>Text Encoding for Legacy Content (FF72-)
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* [TEST] https://hsivonen.com/test/moz/check-charset.htm
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* [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/20025 ***/
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user_pref("intl.charset.fallback.override", "windows-1252");
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/*** [SECTION 0300]: QUIET FOX
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Starting in user.js v67, we only disable the auto-INSTALL of Firefox. You still get prompts
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@ -347,17 +346,14 @@ user_pref("extensions.systemAddon.update.url", ""); // [FF44+]
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* Currently blocked by 'datareporting.healthreport.uploadEnabled' (see 0340) ***/
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user_pref("browser.ping-centre.telemetry", false);
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/* 0515: disable Screenshots
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* alternatively in FF60+, disable uploading to the Screenshots server
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* [1] https://github.com/mozilla-services/screenshots
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* [2] https://www.ghacks.net/2017/05/28/firefox-screenshots-integrated-in-firefox-nightly/ ***/
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* alternatively in FF60+, disable uploading to the Screenshots server ***/
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// user_pref("extensions.screenshots.disabled", true); // [FF55+]
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// user_pref("extensions.screenshots.upload-disabled", true); // [FF60+]
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/* 0517: disable Form Autofill
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* [NOTE] Stored data is NOT secure (uses a JSON file)
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* [NOTE] Heuristics controls Form Autofill on forms without @autocomplete attributes
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* [SETTING] Privacy & Security>Forms and Autofill>Autofill addresses (FF74+)
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* [1] https://wiki.mozilla.org/Firefox/Features/Form_Autofill
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* [2] https://www.ghacks.net/2017/05/24/firefoxs-new-form-autofill-is-awesome/ ***/
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* [1] https://wiki.mozilla.org/Firefox/Features/Form_Autofill ***/
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user_pref("extensions.formautofill.addresses.enabled", false); // [FF55+]
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user_pref("extensions.formautofill.available", "off"); // [FF56+]
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user_pref("extensions.formautofill.creditCards.enabled", false); // [FF56+]
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@ -372,16 +368,14 @@ user_pref("_user.js.parrot", "0600 syntax error: the parrot's no more!");
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* [1] https://developer.mozilla.org/docs/Web/HTTP/Link_prefetching_FAQ ***/
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user_pref("network.prefetch-next", false);
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/* 0602: disable DNS prefetching
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* [1] https://www.ghacks.net/2013/04/27/firefox-prefetching-what-you-need-to-know/
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* [2] https://developer.mozilla.org/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control ***/
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* [1] https://developer.mozilla.org/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control ***/
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user_pref("network.dns.disablePrefetch", true);
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user_pref("network.dns.disablePrefetchFromHTTPS", true); // [HIDDEN PREF ESR] [DEFAULT: true FF70+]
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/* 0603: disable predictor / prefetching ***/
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user_pref("network.predictor.enabled", false);
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user_pref("network.predictor.enable-prefetch", false); // [FF48+]
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/* 0605: disable link-mouseover opening connection to linked server
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* [1] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests
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* [2] https://www.ghacks.net/2015/08/16/block-firefox-from-connecting-to-sites-when-you-hover-over-links/ ***/
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* [1] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests ***/
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user_pref("network.http.speculative-parallel-limit", 0);
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/* 0606: disable "Hyperlink Auditing" (click tracking) and enforce same host in case
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* [1] https://www.bleepingcomputer.com/news/software/major-browsers-to-prevent-disabling-of-click-tracking-privacy-risk/ ***/
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@ -429,7 +423,7 @@ user_pref("network.http.altsvc.oe", false);
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* [1] https://trac.torproject.org/projects/tor/wiki/doc/TorifyHOWTO/WebBrowsers ***/
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user_pref("network.proxy.socks_remote_dns", true);
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/* 0708: disable FTP [FF60+]
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* [1] https://www.ghacks.net/2018/02/20/firefox-60-with-new-preference-to-disable-ftp/ ***/
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* [1] https://www.fxsitecompat.dev/en-CA/docs/2020/ftp-support-will-be-removed/ ***/
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// user_pref("network.ftp.enabled", false);
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/* 0709: disable using UNC (Uniform Naming Convention) paths [FF61+]
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* [SETUP-CHROME] Can break extensions for profiles on network shares
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@ -444,11 +438,6 @@ user_pref("network.file.disable_unc_paths", true); // [HIDDEN PREF]
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* [4] https://en.wikipedia.org/wiki/GIO_(software) ***/
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user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF]
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/*** [SECTION 0709]: HOTFIX for FF77, FIXED in FF78 ***/
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/* 0709: disabling UNC can cause extension storage to fail
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* [1] https://github.com/ghacksuserjs/ghacks-user.js/issues/923 ***/
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user_pref("network.file.disable_unc_paths", false); // [HIDDEN PREF]
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/*** [SECTION 0800]: LOCATION BAR / SEARCH BAR / SUGGESTIONS / HISTORY / FORMS
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Change items 0850 and above to suit for privacy vs convenience and functionality. Consider
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your environment (no unwanted eyeballs), your device (restricted access), your device's
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@ -490,9 +479,6 @@ user_pref("layout.css.visited_links_enabled", false);
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* [SETTING] Search>Provide search suggestions | Show search suggestions in address bar results ***/
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user_pref("browser.search.suggest.enabled", false);
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user_pref("browser.urlbar.suggest.searches", false);
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/* 0809: disable location bar suggesting "preloaded" top websites [FF54+]
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* [1] https://bugzilla.mozilla.org/1211726 ***/
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user_pref("browser.urlbar.usepreloadedtopurls.enabled", false);
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/* 0810: disable location bar making speculative connections [FF56+]
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* [1] https://bugzilla.mozilla.org/1348275 ***/
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user_pref("browser.urlbar.speculativeConnect.enabled", false);
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@ -546,7 +532,7 @@ user_pref("_user.js.parrot", "0900 syntax error: the parrot's expired!");
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/* 0902: use a master password
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* There are no preferences for this. It is all handled internally.
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* [SETTING] Privacy & Security>Logins and Passwords>Use a master password
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* [1] https://support.mozilla.org/kb/use-master-password-protect-stored-logins ***/
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* [1] https://support.mozilla.org/kb/use-primary-password-protect-stored-logins-and-pas ***/
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/* 0903: set how often Firefox should ask for the master password
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* 0=the first time (default), 1=every time it's needed, 2=every n minutes (see 0904) ***/
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user_pref("security.ask_for_password", 2);
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@ -592,7 +578,7 @@ user_pref("_user.js.parrot", "1000 syntax error: the parrot's gone to meet 'is m
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* [NOTE] We also clear cache on exiting Firefox (see 2803) ***/
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user_pref("browser.cache.disk.enable", false);
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/* 1003: disable memory cache
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/* capacity: -1=determine dynamically (default), 0=none, n=memory capacity in kilobytes ***/
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* capacity: -1=determine dynamically (default), 0=none, n=memory capacity in kibibytes ***/
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// user_pref("browser.cache.memory.enable", false);
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// user_pref("browser.cache.memory.capacity", 0); // [HIDDEN PREF ESR]
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/* 1006: disable permissions manager from writing to disk [RESTART]
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@ -600,9 +586,9 @@ user_pref("browser.cache.disk.enable", false);
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* [1] https://bugzilla.mozilla.org/967812 ***/
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// user_pref("permissions.memory_only", true); // [HIDDEN PREF]
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/* 1007: disable media cache from writing to disk in Private Browsing
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* [NOTE] MSE (Media Source Extensions) are already stored in-memory in PB */
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* [NOTE] MSE (Media Source Extensions) are already stored in-memory in PB ***/
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user_pref("browser.privatebrowsing.forceMediaMemoryCache", true); // [FF75+]
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user_pref("media.memory_cache_max_size", 16384);
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user_pref("media.memory_cache_max_size", 65536);
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/** SESSIONS & SESSION RESTORE ***/
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/* 1020: exclude "Undo Closed Tabs" in Session Restore ***/
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@ -749,6 +735,7 @@ user_pref("security.mixed_content.block_display_content", true);
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user_pref("security.mixed_content.block_object_subrequest", true);
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/* 1244: enable https-only-mode [FF76+]
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* [NOTE] This is experimental
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* [SETTING] Privacy & Security>HTTPS-Only Mode (FF81+)
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* [1] https://bugzilla.mozilla.org/1613063 */
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// user_pref("dom.security.https_only_mode", true); // [FF76+]
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// user_pref("dom.security.https_only_mode.upgrade_local", true); // [FF77+]
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@ -819,7 +806,8 @@ user_pref("gfx.font_rendering.opentype_svg.enabled", false);
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* [2] https://en.wikipedia.org/wiki/Graphite_(SIL) ***/
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user_pref("gfx.font_rendering.graphite.enabled", false);
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/* 1409: limit system font exposure to a whitelist [FF52+] [RESTART]
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* If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed.
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* If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed
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* [NOTE] RFP in FF80+ restricts the whitelist to bundled and "Base Fonts" (see 4618)
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* [WARNING] Creating your own probably highly-unique whitelist will raise your entropy.
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* Eventually privacy.resistFingerprinting (see 4500) will cover this
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* [1] https://bugzilla.mozilla.org/1121643 ***/
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@ -902,8 +890,7 @@ user_pref("_user.js.parrot", "1800 syntax error: the parrot's pushing up daisies
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/* 1803: disable Flash plugin
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* 0=deactivated, 1=ask, 2=enabled
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* ESR52.x is the last branch to *fully* support NPAPI, FF52+ stable only supports Flash
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* [NOTE] You can still override individual sites via site permissions
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* [1] https://www.ghacks.net/2013/07/09/how-to-make-sure-that-a-firefox-plugin-never-activates-again/ ***/
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* [NOTE] You can still override individual sites via site permissions ***/
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user_pref("plugin.state.flash", 0);
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/* 1820: disable GMP (Gecko Media Plugins)
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* [1] https://wiki.mozilla.org/GeckoMediaPlugins ***/
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@ -926,7 +913,7 @@ user_pref("_user.js.parrot", "2000 syntax error: the parrot's snuffed it!");
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* [1] https://www.privacytools.io/#webrtc ***/
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user_pref("media.peerconnection.enabled", false);
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/* 2002: limit WebRTC IP leaks if using WebRTC
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* In FF70+ these settings match Mode 4 (Mode 3 in older versions) (see [3])
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* In FF70+ these settings match Mode 4 (Mode 3 in older versions), see [3]
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* [TEST] https://browserleaks.com/webrtc
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* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1189041,1297416,1452713
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* [2] https://wiki.mozilla.org/Media/WebRTC/Privacy
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@ -1057,9 +1044,8 @@ user_pref("_user.js.parrot", "2400 syntax error: the parrot's kicked the bucket!
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* [NOTE] This will break some sites' functionality e.g. Outlook, Twitter, Facebook, Wordpress
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* This applies to onCut/onCopy/onPaste events - i.e. it requires interaction with the website
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* [WARNING] If both 'middlemouse.paste' and 'general.autoScroll' are true (at least one
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* is default false) then enabling this pref can leak clipboard content, see [2]
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* [1] https://www.ghacks.net/2014/01/08/block-websites-reading-modifying-clipboard-contents-firefox/
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* [2] https://bugzilla.mozilla.org/1528289 */
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* is default false) then enabling this pref can leak clipboard content, see [1]
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* [1] https://bugzilla.mozilla.org/1528289 */
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// user_pref("dom.event.clipboardevents.enabled", false);
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/* 2404: disable clipboard commands (cut/copy) from "non-privileged" content [FF41+]
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* this disables document.execCommand("cut"/"copy") to protect your clipboard
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@ -1099,7 +1085,7 @@ user_pref("javascript.options.wasm", false);
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// user_pref("dom.IntersectionObserver.enabled", false);
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/* 2429: enable (limited but sufficient) window.opener protection [FF65+]
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* Makes rel=noopener implicit for target=_blank in anchor and area elements when no rel attribute is set ***/
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user_pref("dom.targetBlankNoOpener.enabled", true); // [DEFAULT: true FF78+]
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user_pref("dom.targetBlankNoOpener.enabled", true); // [DEFAULT: true FF79+]
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/*** [SECTION 2500]: HARDWARE FINGERPRINTING ***/
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user_pref("_user.js.parrot", "2500 syntax error: the parrot's shuffled off 'is mortal coil!");
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@ -1107,7 +1093,7 @@ user_pref("_user.js.parrot", "2500 syntax error: the parrot's shuffled off 'is m
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* Initially a Linux issue (high precision readout) that was fixed.
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* However, it is still another metric for fingerprinting, used to raise entropy.
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* e.g. do you have a battery or not, current charging status, charge level, times remaining etc
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* [NOTE] From FF52+ Battery Status API is only available in chrome/privileged code. see [1]
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* [NOTE] From FF52+ Battery Status API is only available in chrome/privileged code, see [1]
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* [1] https://bugzilla.mozilla.org/1313580 ***/
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// user_pref("dom.battery.enabled", false);
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/* 2505: disable media device enumeration [FF29+]
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@ -1210,8 +1196,7 @@ user_pref("network.IDN_show_punycode", true);
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* CAVEAT: JS can still force a pdf to open in-browser by bundling its own code (rare)
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* [SETTING] General>Applications>Portable Document Format (PDF) ***/
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user_pref("pdfjs.disabled", false); // [DEFAULT: false]
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/* 2621: disable links launching Windows Store on Windows 8/8.1/10 [WINDOWS]
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* [1] https://www.ghacks.net/2016/03/25/block-firefox-chrome-windows-store/ ***/
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/* 2621: disable links launching Windows Store on Windows 8/8.1/10 [WINDOWS] ***/
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user_pref("network.protocol-handler.external.ms-windows-store", false);
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/* 2622: enforce no system colors; they can be fingerprinted
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* [SETTING] General>Language and Appearance>Fonts and Colors>Colors>Use system colors ***/
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@ -1375,6 +1360,7 @@ user_pref("privacy.cpd.siteSettings", false); // Site Preferences
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user_pref("privacy.sanitize.timeSpan", 0);
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/*** [SECTION 4000]: FPI (FIRST PARTY ISOLATION)
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4001: FPI
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** 1278037 - isolate indexedDB (FF51+)
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** 1277803 - isolate favicons (FF52+)
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** 1264562 - isolate OCSP cache (FF52+)
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@ -1393,22 +1379,29 @@ user_pref("privacy.sanitize.timeSpan", 0);
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** 1506693 - isolate pdfjs range-based requests (FF68+)
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** 1330467 - isolate site permissions (FF69+)
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** 1534339 - isolate IPv6 (FF73+)
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4003: NETWORK PARTITON
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** 1647732 - isolate font cache (FF80+)
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** 1649673 - isolate speculative connections (FF80+)
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***/
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user_pref("_user.js.parrot", "4000 syntax error: the parrot's pegged out");
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/* 4001: enable First Party Isolation [FF51+]
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* [SETUP-WEB] May break cross-domain logins and site functionality until perfected
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* [1] https://bugzilla.mozilla.org/1260931 ***/
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* [1] https://bugzilla.mozilla.org/1260931
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* [2] https://bugzilla.mozilla.org/1299996 [META] ***/
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user_pref("privacy.firstparty.isolate", true);
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/* 4002: enforce FPI restriction for window.opener [FF54+]
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* [NOTE] Setting this to false may reduce the breakage in 4001
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* FF65+ blocks postMessage with targetOrigin "*" if originAttributes don't match. But
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* to reduce breakage it ignores the 1st-party domain (FPD) originAttribute. (see [2],[3])
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* to reduce breakage it ignores the 1st-party domain (FPD) originAttribute, see [2],[3]
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* The 2nd pref removes that limitation and will only allow communication if FPDs also match.
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* [1] https://bugzilla.mozilla.org/1319773#c22
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* [2] https://bugzilla.mozilla.org/1492607
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* [3] https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage ***/
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// user_pref("privacy.firstparty.isolate.restrict_opener_access", true); // [DEFAULT: true]
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// user_pref("privacy.firstparty.isolate.block_post_message", true); // [HIDDEN PREF ESR]
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/* 4003: enable site partitioning (FF78+)
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* [1] https://bugzilla.mozilla.org/1590107 [META] */
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user_pref("privacy.partition.network_state", true);
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/*** [SECTION 4500]: RFP (RESIST FINGERPRINTING)
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This master switch will be used for a wide range of items, many of which will
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@ -1465,17 +1458,18 @@ user_pref("privacy.firstparty.isolate", true);
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FF60: Fix keydown/keyup events (1438795)
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** 1337157 - disable WebGL debug renderer info (see 4613) (FF60+)
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** 1459089 - disable OS locale in HTTP Accept-Language headers (ANDROID) (FF62+)
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** 1479239 - return "no-preference" with prefers-reduced-motion (see 4617) (FF63+)
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** 1363508 - spoof/suppress Pointer Events (see 4614) (FF64+)
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** 1479239 - return "no-preference" with prefers-reduced-motion (see 4614) (FF63+)
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** 1363508 - spoof/suppress Pointer Events (see 4615) (FF64+)
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FF65: pointerEvent.pointerid (1492766)
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** 1485266 - disable exposure of system colors to CSS or canvas (see 4615) (FF67+)
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** 1485266 - disable exposure of system colors to CSS or canvas (see 4616) (FF67+)
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** 1407366 - enable inner window letterboxing (see 4504) (FF67+)
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** 1494034 - return "light" with prefers-color-scheme (see 4616) (FF67+)
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** 1494034 - return "light" with prefers-color-scheme (see 4617) (FF67+)
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[1] https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-color-scheme
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** 1564422 - spoof audioContext outputLatency (FF70+)
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** 1595823 - spoof audioContext sampleRate (FF72+)
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** 1607316 - spoof pointer as coarse and hover as none (ANDROID) (FF74+)
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** 1621433 - randomize canvas (previously FF58+ returned an all-white canvas) (FF78+)
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** 1653987 - limit font visibility to bundled and "Base Fonts" (see 4618) (non-ANDROID) (FF80+)
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***/
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user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs");
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/* 4501: enable privacy.resistFingerprinting [FF41+]
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@ -1594,23 +1588,31 @@ user_pref("media.ondevicechange.enabled", false);
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// [2] https://developer.mozilla.org/docs/Web/API/WEBGL_debug_renderer_info
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user_pref("webgl.enable-debug-renderer-info", false);
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// * * * /
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// FF65+
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// 4614: [2516] disable PointerEvents
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// FF63+
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// 4614: enforce prefers-reduced-motion as no-preference [FF63+] [RESTART]
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// 0=no-preference, 1=reduce
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user_pref("ui.prefersReducedMotion", 0); // [HIDDEN PREF]
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// FF64+
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// 4615: [2516] disable PointerEvents
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// [1] https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent
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user_pref("dom.w3c_pointer_events.enabled", false);
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// * * * /
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// FF67+
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// 4615: [2618] disable exposure of system colors to CSS or canvas [FF44+]
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// 4616: [2618] disable exposure of system colors to CSS or canvas [FF44+]
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// [NOTE] See second listed bug: may cause black on black for elements with undefined colors
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// [SETUP-CHROME] Might affect CSS in themes and extensions
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// [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=232227,1330876
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user_pref("ui.use_standins_for_native_colors", true);
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// 4616: enforce prefers-color-scheme as light [FF67+]
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// 4617: enforce prefers-color-scheme as light [FF67+]
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// 0=light, 1=dark : This overrides your OS value
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user_pref("ui.systemUsesDarkTheme", 0); // [HIDDEN PREF]
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// 4617: enforce prefers-reduced-motion as no-preference [FF63+] [RESTART]
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// 0=no-preference, 1=reduce
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user_pref("ui.prefersReducedMotion", 0); // [HIDDEN PREF]
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// FF80+
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// 4618: limit font visbility (non-ANDROID) [FF79+]
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// Uses hardcoded lists with two parts: kBaseFonts + kLangPackFonts, see [1]
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// 1=only base system fonts, 2=also fonts from optional language packs, 3=also user-installed fonts
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// [NOTE] Bundled fonts are auto-allowed
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// [1] https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc
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user_pref("layout.css.font-visibility.level", 1);
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// * * * /
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// ***/
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@ -1690,6 +1692,20 @@ user_pref("_user.js.parrot", "5000 syntax error: this is an ex-parrot!");
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[1] https://github.com/ghacksuserjs/ghacks-user.js/issues/123
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***/
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user_pref("_user.js.parrot", "9999 syntax error: the parrot's deprecated!");
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/* ESR78.x still uses all the following prefs
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// [NOTE] replace the * with a slash in the line above to re-enable them
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// FF79
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// 0212: enforce fallback text encoding to match en-US
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// When the content or server doesn't declare a charset the browser will
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// fallback to the "Current locale" based on your application language
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// [SETTING] General>Language and Appearance>Fonts and Colors>Advanced>Text Encoding for Legacy Content (FF72-)
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// [TEST] https://hsivonen.com/test/moz/check-charset.htm
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// [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/20025
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// [-] https://bugzilla.mozilla.org/1603712
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user_pref("intl.charset.fallback.override", "windows-1252");
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// * * * /
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// ***/
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/* ESR68.x still uses all the following prefs
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// [NOTE] replace the * with a slash in the line above to re-enable them
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// FF69
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@ -1755,7 +1771,6 @@ user_pref("extensions.blocklist.url", "https://blocklists.settings.services.mozi
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// * * * /
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// FF77
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// 0850e: disable location bar one-off searches [FF51+]
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// [1] https://www.ghacks.net/2016/08/09/firefox-one-off-searches-address-bar/
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// [-] https://bugzilla.mozilla.org/1628926
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// user_pref("browser.urlbar.oneOffSearches", false);
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// 2605: block web content in file processes [FF55+]
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