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ignore.list
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// List of preferences to ignore during comparison with Firefox upstream prefs
// Preference names must use double quotes
// Don't touch Firefox social API preferences, fully opt-in
"social.whitelist"
"social.toast-notifications.enabled"
"social.shareDirectory"
"social.remote-install.enabled"
"social.directories"
"social.share.activationPanelEnabled"
"social.enabled"
// Don't disable Firefox Sync, fully opt-in
// https://wiki.mozilla.org/Services/Sync
"services.sync.enabled"
// Don't touch other Firefox Sync Settings
"services.sync.prefs.sync.accessibility.blockautorefresh"
"services.sync.prefs.sync.accessibility.browsewithcaret"
"services.sync.prefs.sync.accessibility.typeaheadfind"
"services.sync.prefs.sync.accessibility.typeaheadfind.linksonly"
"services.sync.prefs.sync.addons.ignoreUserEnabledChanges"
"services.sync.prefs.sync.browser.ctrlTab.previews"
"services.sync.prefs.sync.browser.download.useDownloadDir"
"services.sync.prefs.sync.browser.formfill.enable"
"services.sync.prefs.sync.browser.link.open_newwindow"
"services.sync.prefs.sync.browser.newtabpage.enabled"
"services.sync.prefs.sync.browser.newtabpage.enhanced"
"services.sync.prefs.sync.browser.newtabpage.pinned"
"services.sync.prefs.sync.browser.offline-apps.notify"
"services.sync.prefs.sync.browser.safebrowsing.malware.enabled"
"services.sync.prefs.sync.browser.safebrowsing.phishing.enabled"
"services.sync.prefs.sync.browser.search.update"
"services.sync.prefs.sync.browser.sessionstore.restore_on_demand"
"services.sync.prefs.sync.browser.startup.homepage"
"services.sync.prefs.sync.browser.startup.page"
"services.sync.prefs.sync.browser.tabs.loadInBackground"
"services.sync.prefs.sync.browser.tabs.warnOnClose"
"services.sync.prefs.sync.browser.tabs.warnOnOpen"
"services.sync.prefs.sync.browser.urlbar.autocomplete.enabled"
"services.sync.prefs.sync.browser.urlbar.maxRichResults"
"services.sync.prefs.sync.browser.urlbar.suggest.bookmark"
"services.sync.prefs.sync.browser.urlbar.suggest.history"
"services.sync.prefs.sync.browser.urlbar.suggest.history.onlyTyped"
"services.sync.prefs.sync.browser.urlbar.suggest.openpage"
"services.sync.prefs.sync.browser.urlbar.suggest.searches"
"services.sync.prefs.sync.dom.disable_open_during_load"
"services.sync.prefs.sync.dom.disable_window_flip"
"services.sync.prefs.sync.dom.disable_window_move_resize"
"services.sync.prefs.sync.dom.event.contextmenu.enabled"
"services.sync.prefs.sync.extensions.personas.current"
"services.sync.prefs.sync.extensions.update.enabled"
"services.sync.prefs.sync.intl.accept_languages"
"services.sync.prefs.sync.javascript.enabled"
"services.sync.prefs.sync.layout.spellcheckDefault"
"services.sync.prefs.sync.lightweightThemes.selectedThemeID"
"services.sync.prefs.sync.lightweightThemes.usedThemes"
"services.sync.prefs.sync.network.cookie.cookieBehavior"
"services.sync.prefs.sync.network.cookie.lifetime.days"
"services.sync.prefs.sync.network.cookie.lifetimePolicy"
"services.sync.prefs.sync.network.cookie.thirdparty.sessionOnly"
"services.sync.prefs.sync.permissions.default.image"
"services.sync.prefs.sync.pref.advanced.images.disable_button.view_image"
"services.sync.prefs.sync.pref.advanced.javascript.disable_button.advanced"
"services.sync.prefs.sync.pref.downloads.disable_button.edit_actions"
"services.sync.prefs.sync.pref.privacy.disable_button.cookie_exceptions"
"services.sync.prefs.sync.privacy.clearOnShutdown.cache"
"services.sync.prefs.sync.privacy.clearOnShutdown.cookies"
"services.sync.prefs.sync.privacy.clearOnShutdown.downloads"
"services.sync.prefs.sync.privacy.clearOnShutdown.formdata"
"services.sync.prefs.sync.privacy.clearOnShutdown.history"
"services.sync.prefs.sync.privacy.clearOnShutdown.offlineApps"
"services.sync.prefs.sync.privacy.clearOnShutdown.sessions"
"services.sync.prefs.sync.privacy.clearOnShutdown.siteSettings"
"services.sync.prefs.sync.privacy.donottrackheader.enabled"
"services.sync.prefs.sync.privacy.sanitize.sanitizeOnShutdown"
"services.sync.prefs.sync.privacy.trackingprotection.enabled"
"services.sync.prefs.sync.privacy.trackingprotection.pbmode.enabled"
"services.sync.prefs.sync.security.default_personal_cert"
"services.sync.prefs.sync.security.OCSP.enabled"
"services.sync.prefs.sync.security.OCSP.require"
"services.sync.prefs.sync.security.tls.version.max"
"services.sync.prefs.sync.security.tls.version.min"
"services.sync.prefs.sync.services.sync.syncedTabs.showRemoteIcons"
"services.sync.prefs.sync.signon.rememberSignons"
"services.sync.prefs.sync.spellchecker.dictionary"
"services.sync.prefs.sync.xpinstall.whitelist.required"
"services.sync.registerEngines"
"services.sync.sendTabToDevice.enabled"
"services.sync.syncedTabs.showRemoteIcons"
// Don't touch other geospecific search settings, browser.search.geoSpecificDefaults master switch is false
"browser.search.geoSpecificDefaults.url"
// Deprecated Do Not Track setting, Firefox <36, https://hg.mozilla.org/mozilla-central/rev/9a16137bc7b4
"privacy.donottrackheader.value"
// Don't alter safebrowsing.downloads.* options, safebrowsing.downloads.enabled master switch is off
"browser.safebrowsing.downloads.remote.block_potentially_unwanted" // (FF48+)
"browser.safebrowsing.downloads.remote.block_uncommon" // (FF48+)
"browser.safebrowsing.downloads.remote.block_dangerous" // (FF49+)
"browser.safebrowsing.downloads.remote.block_dangerous_host" // (FF49+)
// Don't alter URL for binary downloads check
"browser.safebrowsing.downloads.remote.url"
// Don't alter Mozilla/Google update URLs for safebrowsing data, safebrowsing should stay enabled
"browser.safebrowsing.provider.google.updateURL" // update google lists
"browser.safebrowsing.provider.google.gethashURL" // list hash check
"browser.safebrowsing.provider.google4.updateURL" // (FF50+)
"browser.safebrowsing.provider.google4.gethashURL" // (FF50+)
"browser.safebrowsing.gethashURL"
"browser.safebrowsing.malware.reportURL"
"browser.safebrowsing.provider.google.appRepURL"
"browser.safebrowsing.reportErrorURL"
"browser.safebrowsing.reportGenericURL"
"browser.safebrowsing.reportMalwareErrorURL"
"browser.safebrowsing.reportMalwareURL"
"browser.safebrowsing.reportURL"
"browser.safebrowsing.updateURL"
"browser.safebrowsing.provider.mozilla.gethashURL" // resolves hash conflicts
"browser.safebrowsing.provider.mozilla.updateURL" // update FF lists
// Don't touch Other Safebrowsing blocklist settings
"urlclassifier.alternate_error_page"
"urlclassifier.blockedTable"
"urlclassifier.disallow_completions"
"urlclassifier.downloadAllowTable"
"urlclassifier.downloadBlockTable"
"urlclassifier.flashAllowExceptTable"
"urlclassifier.flashAllowTable"
"urlclassifier.flashExceptTable"
"urlclassifier.flashSubDocExceptTable"
"urlclassifier.flashSubDocTable"
"urlclassifier.flashTable"
"urlclassifier.gethashnoise"
"urlclassifier.gethash.timeout_ms"
"urlclassifier.malwareTable"
"urlclassifier.max-complete-age"
"urlclassifier.phishTable"
"urlclassifier.trackingTable"
"urlclassifier.trackingWhitelistTable"
"urlclassifier.updateinterval"
// Do NOT select "clear passwords" in clear private data dialog (relaxed) (usability)
"privacy.cpd.passwords"
// Do NOT select "site settings" in clear private data dialog (relaxed) (usability)
"privacy.clearOnShutdown.siteSettings"
// Don't disable featured extensions list in add-ons tab
"extensions.webservice.discoverURL"
// Don't change fine telemetry options, telemetry is disabled
"toolkit.telemetry.unifiedIsOptIn"
"toolkit.telemetry.server"
"toolkit.telemetry.archive.enabled"
"toolkit.telemetry.cachedClientID"
"toolkit.telemetry.debugSlowSql"
"toolkit.telemetry.infoURL"
"toolkit.telemetry.server_owner"
// Don't change SVG options, SVG is disabled
"svg.context-properties.content.enabled"
"svg.display-lists.hit-testing.enabled"
"svg.display-lists.painting.enabled"
"svg.marker-improvements.enabled"
"svg.new-getBBox.enabled"
"svg.paint-order.enabled"
"svg.path-caching.enabled"
"svg.transform-box.enabled"
// Don't disable local about:healthreport page, remote healthreport submission is disabled. locale/css+js+json for this page are requested from mozilla
"datareporting.healthreport.about.reportUrl"
// Don't change New Tab page/tiles specific options, new tab page is disabled
"browser.newtabpage.introShown"
// Don't change per-tab back/forward history retention (default: 50 URLs). Can be queried via JavaScript (relaxed) (usability)
"browser.sessionhistory.max_entries"
// Don't change Windows-specific taskbar/jumplist options (UI)
"browser.taskbar.lists.enabled"
"browser.taskbar.lists.frequent.enabled"
"browser.taskbar.lists.recent.enabled"
"browser.taskbar.lists.tasks.enabled"
"browser.taskbar.previews.enable"
// Don't disable intermediate certificate caching, breaks many sites, fingerprint via intermediate CA caching can be prevented by blocking cross-site requests. (relaxed) (compatibility)
"security.nocertdb"
// Don't change supported PeerConnection/WebRTC functionality, WebRTC is disabled via master switch.
"media.peerconnection.use_document_iceservers"
"media.peerconnection.video.enabled"
"media.peerconnection.identity.enabled"
"media.peerconnection.identity.timeout"
"media.peerconnection.turn.disable"
// Don't disable full screen API/support (relaxed) (usability)
"full-screen-api.enabled""
// Don't change fine VR API options, VR support is disabled via master switch
"dom.vr.oculus.enabled"
"dom.vr.osvr.enabled" // (Firefox >= 49)
"dom.vr.openvr.enabled" // (Firefox >=51)
// Don't change disk cache settings, disk cache is disabled
"browser.cache.disk.capacity"
"browser.cache.disk.smart_size.enabled"
"browser.cache.disk.smart_size.first_run"
// Don't alter default fonts (UI)
"font.name.monospace.x-unicode"
"font.name.monospace.x-western"
"font.name.sans-serif.x-unicode"
"font.name.sans-serif.x-western"
"font.name.serif.x-unicode"
"font.name.serif.x-western"
// Don't touch about:config warning message (UI)
"general.warnOnAboutConfig"
// Don't try to prevent javascript popup window manipulation (size/toolbars...) (UI)
"dom.disable_window_flip" // window z-order
"dom.disable_window_move_resize"
"dom.disable_window_open_feature.close"
"dom.disable_window_open_feature.minimizable"
"dom.disable_window_open_feature.personalbar" //bookmarks toolbar
"dom.disable_window_open_feature.titlebar"
"dom.disable_window_status_change"
"dom.allow_scripts_to_close_windows"
"dom.disable_window_status_change"
// Show "View source" in a separate window instead of tab (UI)
"view_source.tab"
// Other "View source" settings
"view_source.editor.args"
"view_source.editor.external"
"view_source.editor.path"
"view_source.syntax_highlight"
"view_source.wrap_long_lines"
// Don't change Firefox accounts/WebChannels settings
// https://dxr.mozilla.org/mozilla-beta/source/services/fxaccounts/FxAccountsConfig.jsm
// https://mozilla-services.readthedocs.io/en/latest/howtos/run-fxa.html
"webchannel.allowObject.urlWhitelist"
// Don't change slow startup detection (UI)
"browser.slowStartup.notificationDisabled"
"browser.slowStartup.maxSamples"
"browser.slowStartup.samples"
// Don't hide "know your rights" infobar (UI)
"browser.rights.3.shown"
// Don't change browser startup/homepage/welcome page settings (UI)
"browser.startup.homepage_override.mstone"
"startup.homepage_welcome_url"
"startup.homepage_welcome_url.additional"
"startup.homepage_override_url" // what's new page after updates
"browser.laterrun.enabled"
"browser.startup.page"
// Don't change tab-related warnings settings (UI)
"browser.tabs.warnOnClose"
"browser.tabs.warnOnCloseOtherTabs"
"browser.tabs.warnOnOpen"
// Don't change redirection limit, default is 20 redirects (Network)
"network.http.redirection-limit"
// don't change backspace key action (0 = previous page, 1 = scroll up, 2 = do nothing) (UI)
"browser.backspace_action"
// Don't change ctrl-tab previews options (UI)
"browser.ctrlTab.previews"
// Don't change spellchecking controls options (UI)
"layout.spellcheckDefault"
// Don't change URL bar selection behaviour (UI)
"browser.urlbar.clickSelectsAll"
"browser.urlbar.doubleClickSelectsAll"
// Don't change settings for new tab position in tab bar (UI)
"browser.tabs.insertRelatedAfterCurrent"
// Don't change setting for switching back to parent tab on tab close (UI)
"browser.tabs.selectOwnerOnClose"
// Don't change behaviour for switching to new tabs when they are opened (UI)
"browser.tabs.loadInBackground"
// Don't change default setting for console warnings about non-e10s-compatible addons (Development)
"dom.ipc.shims.enabledWarnings"
// Don't change sandboxing level settings
// https://wiki.mozilla.org/Sandbox
"security.sandbox.content.level"
"dom.ipc.plugins.sandbox-level.default"
"dom.ipc.plugins.sandbox-level.flash"
// Don't touch other UI options
"ui.key.accelKey"
"ui.key.chromeAccess"
"ui.key.contentAccess"
"ui.key.generalAccessKey"
"ui.key.menuAccessKey"
"ui.key.menuAccessKeyFocuses"
"ui.key.saveLink.shift"
"ui.menu.incremental_search.timeout"
"ui.mouse.radius.bottommm"
"ui.mouse.radius.enabled"
"ui.mouse.radius.inputSource.touchOnly"
"ui.mouse.radius.leftmm"
"ui.mouse.radius.rightmm"
"ui.mouse.radius.topmm"
"ui.mouse.radius.visitedWeight"
"ui.osk.debug.keyboardDisplayReason"
"ui.osk.detect_physical_keyboard"
"ui.osk.enabled"
"ui.osk.on_screen_keyboard_path"
"ui.osk.require_win10"
"ui.panel.default_level_parent"
"ui.plugin.cancel_composition_at_input_source_changed"
"ui.popup.disable_autohide"
"ui.scrollToClick"
"ui.touch_activation.delay_ms"
"ui.touch_activation.duration_ms"
"ui.touch.radius.bottommm"
"ui.touch.radius.enabled"
"ui.touch.radius.leftmm"
"ui.touch.radius.rightmm"
"ui.touch.radius.topmm"
"ui.touch.radius.visitedWeight"
"ui.trackpoint_hack.enabled"
"ui.use_activity_cursor"
"ui.use_native_colors"
"ui.window_class_override"
// Don't touch WebGL settings, WebGL is disabled.
"webgl.allow-fb-invalidation"
"webgl.angle.force-d3d11"
"webgl.angle.force-warp"
"webgl.angle.try-d3d11"
"webgl.bypass-shader-validation"
"webgl.can-lose-context-in-foreground"
"webgl.default-no-alpha"
"webgl.disable-angle"
"webgl.disable-DOM-blit-uploads"
"webgl.disable-wgl"
"webgl.dxgl.enabled"
"webgl.dxgl.needs-finish"
"webgl.enable-draft-extensions"
"webgl.enable-privileged-extensions"
"webgl.enable-webgl2"
"webgl.force-enabled"
"webgl.force-index-validation"
"webgl.force-layers-readback"
"webgl.lose-context-on-memory-pressure"
"webgl.max-acceptable-fb-status-invals"
"webgl.max-perf-warnings"
"webgl.max-warnings-per-context"
"webgl.msaa-force"
"webgl.prefer-16bpp"
"webgl.renderer-string-override"
"webgl.restore-context-when-visible"
"webgl.vendor-string-override"
"webgl.webgl2-compat-mode"
// Don't touch predictive service (Necko) settings, Necko is disabled
"network.predictor.cleaned-up"
"network.predictor.enable-hover-on-ssl"
"network.predictor.enable-prefetch"
"network.predictor.max-resources-per-entry"
"network.predictor.max-uri-length"
"network.predictor.page-degradation.day"
"network.predictor.page-degradation.max"
"network.predictor.page-degradation.month"
"network.predictor.page-degradation.week"
"network.predictor.page-degradation.year"
"network.predictor.preconnect-min-confidence"
"network.predictor.prefetch-force-valid-for"
"network.predictor.prefetch-min-confidence"
"network.predictor.prefetch-rolling-load-count"
"network.predictor.preresolve-min-confidence"
"network.predictor.redirect-likely-confidence"
"network.predictor.subresource-degradation.day"
"network.predictor.subresource-degradation.max"
"network.predictor.subresource-degradation.month"
"network.predictor.subresource-degradation.week"
"network.predictor.subresource-degradation.year"
// Don't alter HTTP/2.0 support
// http://blog.scottlogic.com/2014/11/07/http-2-a-quick-look.html
// https://queue.acm.org/detail.cfm?id=2716278
// https://http2.github.io/faq/
// https://github.com/ghacksuserjs/ghacks-user.js/issues/107
"network.http.spdy.enabled.http2"
// Don't try to prevent autorefresh of pages (meta http-equiv="refresh")
"accessibility.blockautorefresh"
// Number of suggested history/bookmarks items in the URL bar dropdown
// https://www.labnol.org/software/browsers/prevent-firefox-showing-bookmarks-address-location-bar/3636/
// http://kb.mozillazine.org/Browser.urlbar.maxRichResults
// When browser.urlbar.autocomplete.enabled is false, the dropdown is disabled
// Setting the preference to 0 effectively disables the Location Bar dropdown entirely
"browser.urlbar.maxRichResults"
// privacy.clearOnShutdown.passwords was removed in Firefox 42
// https://hg.mozilla.org/releases/mozilla-esr45/rev/fb4f42bbeb01
"privacy.clearOnShutdown.passwords"
// Old Firefox 3.1a2 pref
// https://hg.mozilla.org/mozilla-central/rev/adb1ef78dd21
"browser.sessionstore.enabled"
// PREF: Enable Information Bar for Outdated Plugins (Firefox < 33)
// http://forums.mozillazine.org/viewtopic.php?f=8&t=2490287
// https://hg.mozilla.org/mozilla-central/rev/189803
"plugins.hide_infobar_for_outdated_plugin"
// PREF: Do not store POST data in saved sessions (Firefox < 29)
// https://hg.mozilla.org/mozilla-central/rev/163997
// http://kb.mozillazine.org/Browser.sessionstore.postdata
// relates to CIS 2.5.7
"browser.sessionstore.postdata"
// Force "allow full screen" prompts (UI) (Firefox <42.0a1)
// https://hg.mozilla.org/mozilla-central/rev/253900
"full-screen-api.approval-required"
// Delay in seconds before allowing user to install an addon (UI)
"security.dialog_enable_delay"
// Mouse tweaks (UI)
"mousewheel.acceleration.start"
"mousewheel.acceleration.factor"
"mousewheel.min_line_scroll_amount"
// Force emphasizing second and top-level domains in the URL (Firefox <15)
// http://kb.mozillazine.org/Browser.identity.ssl_domain_display
// https://bugzilla.mozilla.org/show_bug.cgi?id=748385
"browser.identity.ssl_domain_display"
// Prevent DOM from manipulating elements from menu bars, toolbars...
"dom.disable_window_open_feature.menubar"
"dom.disable_window_open_feature.personalbar"
"dom.disable_window_open_feature.scrollbars"
"dom.disable_window_open_feature.toolbar"
// Limit images size in memory (performance)
// http://kb.mozillazine.org/Memory_Leak
"image.mem.surfacecache.max_size_kb"
"image.mem.max_decoded_image_kb"
// PREF: Limit duration for which images are kept in memory (performance) (default=120000)
"image.mem.min_discard_timeout_ms"
// PREF: Limit javascript memory (performance)
// More frequent javascript garbage collector
// http://www.computershowto.pro/2014/05/firefox-memory-and-config-tweaks-to-make-firefox-faster/
"javascript.options.mem.max"
"javascript.options.mem.gc_frequency"
// PREF: Delay in ms between hovering over a menu option with a submenu and the submenu appearing. (performance)
// http://kb.mozillazine.org/Firefox_:_FAQs_:_About%3Aconfig_Entries
"ui.submenuDelay"
// PREF: Lower initial page painting delay (performance)
// Delay after which the page is painted on the display. The default is 250ms, lowering it makes the page appear earlier, but uses more paint cycles and hogs the CPU.
"nglayout.initialpaint.delay"
// Disable "display passwords" button in password manager
"pref.privacy.disable_button.view_passwords"
"pref.privacy.disable_button.view_passwords_exceptions"
// Disable IPv6
"network.dns.disableIPv6"
// PREF: Disable tabs animation (performance) (Firefox < 54)
"browser.tabs.animate"
// PREF: Disable fullscreen transition animation (performance) (Firefox < 54)
"browser.fullscreen.animate"
// PREF: Disable fullscreen/tabs/alerts animations (Firefox >= 54)
// http://hg.mozilla.org/mozilla-central/rev/77760e0b239f
"toolkit.cosmeticAnimations.enabled"
// Hide missing plugin notifications (Flash Player) (Firefox <23)
// https://hg.mozilla.org/mozilla-central/rev/4e55b3a02970
"plugins.hide_infobar_for_missing_plugin"
// Hide missing plugin notifications (Flash Player) (Firefox <35.0a1)
// https://hg.mozilla.org/mozilla-central/rev/206139
"plugins.hideMissingPluginsNotification"
"plugins.notifyMissingFlash"
// PREF: Set Firefox locale to en-US
// http://kb.mozillazine.org/General.useragent.locale
// window.navigator.language is now determined by intl.accept_languages
// https://bugzilla.mozilla.org/show_bug.cgi?id=448743
"general.useragent.locale"
// PREF: Set the default search engine to DuckDuckGo
// https://support.mozilla.org/en-US/questions/948134
// No longer works in Firefox 52+, results in unexpected default search engine
// https://github.com/pyllyukko/user.js/issues/396
user_pref("browser.search.defaultenginename", "DuckDuckGo");
user_pref("browser.search.order.1", "DuckDuckGo");
user_pref("keyword.URL", "https://duckduckgo.com/?q=!+");