/// Extensions //// Install extensions automatically // Only from the current user's profile. // https://extensionworkshop.com/documentation/enterprise/enterprise-distribution/#controlling-automatic-installations user_pref("extensions.autoDisableScopes", 14); /// Preferences // about:preferences //// General // about:preferences#general ///// Startup // Open previous windows and tabs user_pref("browser.startup.page", 3); ///// Tabs // Confirm before closing multiple tabs user_pref("browser.tabs.warnOnClose", true); ///// Digital Rights Management (DRM) Content // Play DRM-controlled content user_pref("media.eme.enabled", true); ///// Browsing // Recommend extensions as you browse user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false); // Recommend features as you browse user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false); ///// Network Settings // Enable DNS over HTTPS // user_pref("doh-rollout.disable-heuristics", true); // user_pref("network.trr.mode", 2); // Use Provider: Cloudflare (Default) // user_pref("network.trr.uri", "https://mozilla.cloudflare-dns.com/dns-query"); // Use Provider: Custom // user_pref("network.trr.uri", "https://dns.quad9.net/dns-query"); // user_pref("network.trr.custom_uri", "https://dns.quad9.net/dns-query"); //// Home // about:preferences#home ///// New Windows and Tabs // Homepage and new windows: Blank Page user_pref("browser.startup.homepage", "about:blank"); // New tabs: Blank Page user_pref("browser.newtabpage.enabled", false); ///// Firefox Home Content // Shortcuts: Sponsored shortcuts user_pref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); //// Search // about:preferences#search ///// Default Search Engine // DuckDuckGo // user_pref("browser.urlbar.placeholderName", "DuckDuckGo"); // Google user_pref("browser.urlbar.placeholderName", "Google"); ///// Search Suggestions // Show search suggestions ahead of browsing history in address bar results user_pref("browser.urlbar.showSearchSuggestionsFirst", false); //// Privacy & Security // about:preferences#privacy ///// Browser Privacy // Enhanced Tracking Protection: Strict user_pref("browser.contentblocking.category", "strict"); user_pref("network.cookie.cookieBehavior", 5); user_pref("network.http.referer.disallowCrossSiteRelaxingDefault", true); user_pref("privacy.annotate_channels.strict_list.enabled", true); user_pref("privacy.partition.network_state.ocsp_cache", true); user_pref("privacy.trackingprotection.enabled", true); user_pref("privacy.trackingprotection.socialtracking.enabled", true); // Logins and Passwords: Ask to save logins and passwords for websites user_pref("signon.rememberSignons", false); // Address Bar: Browsing history user_pref("browser.urlbar.suggest.history", false); // Address Bar: Bookmarks user_pref("browser.urlbar.suggest.bookmark", true); // Address Bar: Open tabs user_pref("browser.urlbar.suggest.openpage", false); // Address Bar: Shortcuts user_pref("browser.urlbar.suggest.topsites", false); // Address Bar: Search engines user_pref("browser.urlbar.suggest.engines", false); ///// Firefox Data Collection and Use // Allow Firefox to send technical and interaction data to Mozilla user_pref("datareporting.healthreport.uploadEnabled", false); // Allow Firefox to install and run studies user_pref("app.shield.optoutstudies.enabled", false); ///// Security // Block dangerous and deceptive content user_pref("browser.safebrowsing.malware.enabled", false); user_pref("browser.safebrowsing.phishing.enabled", false); // HTTPS-Only Mode: Enable HTTPS-Only Mode in all windows user_pref("dom.security.https_only_mode", true); user_pref("dom.security.https_only_mode_ever_enabled", true); /// User interface // Don't hide toolbars in fullscreen user_pref("browser.fullscreen.autohide", false); /// Clipboard // Disable legacy `document.execCommand()` with `"cut"` and `"copy"` arguments. // <https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand#cut> // <https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand#copy> user_pref("dom.allow_cut_copy", false); // Disable `document.addEventListener()` with `"cut"`, `"copy"`, and `"paste"` // arguments. // <https://developer.mozilla.org/en-US/docs/Web/API/Document/cut_event> // <https://developer.mozilla.org/en-US/docs/Web/API/Document/copy_event> // <https://developer.mozilla.org/en-US/docs/Web/API/Document/paste_event> user_pref("dom.event.clipboardevents.enabled", false); // Disable `window.navigator.clipboard` `read{,Text}` and `write{,Text}` async // calls, which take/return a `ClipboardItem` (formerly `DataTransfer`). (Only // `read` requires explicit permission from the user, not `write`.) // <https://developer.mozilla.org/en-US/docs/Web/API/Window/navigator> // <https://developer.mozilla.org/en-US/docs/Web/API/Navigator/clipboard> // <https://developer.mozilla.org/en-US/docs/Web/API/Clipboard> // <https://developer.mozilla.org/en-US/docs/Web/API/ClipboardItem> // <https://developer.mozilla.org/en-US/docs/Web/API/ClipboardEvent> // <https://developer.mozilla.org/en-US/docs/Web/API/ClipboardItem> // <https://hg.mozilla.org/mozilla-central/rev/7ea0b5653ebeb4ccf6f697bac20698725e2b44c7> // <https://hg.mozilla.org/mozilla-central/rev/7dedaec9dba5faa3d3549ca868ccc278e293db42> user_pref("dom.events.asyncClipboard.dataTransfer", false); user_pref("dom.events.asyncClipboard.clipboardItem", false); user_pref("dom.events.asyncClipboard.readText", false); /// firefox-profilemaker //// Annoyances ///// Disable firefox intro tabs on the first start // Disable the first run tabs with advertisements for the latest firefox // features. user_pref("browser.startup.homepage_override.mstone", "ignore"); ///// Disable new tab page intro // Disable the intro to the newtab page on the first run user_pref("browser.newtabpage.introShown", true); ///// Pocket Reading List // Disable Pocket user_pref("extensions.pocket.enabled", false); user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket", false); ///// Disable Sponsored Top Sites // Firefox 83 introduced sponsored top sites, which are sponsored ads displayed // as suggestions in the URL bar. user_pref("services.sync.prefs.sync.browser.newtabpage.activity-stream.showSponsoredTopSite", false); ///// Disable about:config warning. user_pref("browser.aboutConfig.showWarning", false); ///// Do not trim URLs in navigation bar // By default Firefox trims many URLs (hiding the http:// prefix and trailing // slash /). user_pref("browser.urlbar.trimURLs", false); ///// Disable checking if Firefox is the default browser user_pref("browser.shell.checkDefaultBrowser", false); ///// Disable reset prompt. // When Firefox is not used for a while, it displays a prompt asking if the // user wants to reset the profile. (see Bug #955950). user_pref("browser.disableResetPrompt", true); ///// Disable Heartbeat Userrating // With Firefox 37, Mozilla integrated the Heartbeat system to ask users from // time to time about their experience with Firefox. user_pref("browser.selfsupport.url", ""); ///// Content of the new tab page // Empty user_pref("browser.newtabpage.enhanced", false); user_pref("browser.newtabpage.enabled", false); ///// Disable autoplay of <video> tags. // Per default, <video> tags are allowed to start automatically. Note: When // disabling autoplay, you will have to click pause and play again on some // video sites. // Prompt me user_pref("media.autoplay.default", 2); //// Browser Features ///// Disable Telemetry // The telemetry feature sends data about the performance and responsiveness of // Firefox to Mozilla. user_pref("toolkit.telemetry.enabled", false); user_pref("toolkit.telemetry.archive.enabled", false); user_pref("toolkit.telemetry.rejected", true); user_pref("toolkit.telemetry.unified", false); user_pref("toolkit.telemetry.unifiedIsOptIn", false); user_pref("toolkit.telemetry.prompted", 2); user_pref("toolkit.telemetry.server", ""); user_pref("toolkit.telemetry.cachedClientID", ""); user_pref("toolkit.telemetry.newProfilePing.enabled", false); user_pref("toolkit.telemetry.shutdownPingSender.enabled", false); user_pref("toolkit.telemetry.updatePing.enabled", false); user_pref("toolkit.telemetry.bhrPing.enabled", false); user_pref("toolkit.telemetry.firstShutdownPing.enabled", false); user_pref("toolkit.telemetry.hybridContent.enabled", false); user_pref("toolkit.telemetry.reportingpolicy.firstRun", false); ///// Disable health report // Disable sending Firefox health reports to Mozilla user_pref("datareporting.healthreport.uploadEnabled", false); user_pref("datareporting.policy.dataSubmissionEnabled", false); user_pref("datareporting.healthreport.service.enabled", false); ///// Disable shield studies // Mozilla shield studies is a feature which allows mozilla to remotely install // experimental addons. user_pref("app.normandy.enabled", false); user_pref("app.normandy.api_url", ""); user_pref("app.shield.optoutstudies.enabled", false); user_pref("extensions.shield-recipe-client.enabled", false); user_pref("extensions.shield-recipe-client.api_url", ""); ///// Disable experiments // Telemetry Experiments is a feature that allows Firefox to automatically // download and run specially-designed restartless addons based on certain // conditions. user_pref("experiments.enabled", false); user_pref("experiments.manifest.uri", ""); user_pref("experiments.supported", false); user_pref("experiments.activeExperiment", false); user_pref("network.allow-experiments", false); ///// Disable Crash Reports // The crash report may contain data that identifies you or is otherwise // sensitive to you. user_pref("breakpad.reportURL", ""); user_pref("browser.tabs.crashReporting.sendReport", false); user_pref("browser.crashReports.unsubmittedCheck.enabled", false); user_pref("browser.crashReports.unsubmittedCheck.autoSubmit", false); user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false); ///// Opt out metadata updates // Firefox sends data about installed addons as metadata updates, so Mozilla is // able to recommend you other addons. user_pref("extensions.getAddons.cache.enabled", false); ///// Disable google safebrowsing // Google safebrowsing can detect phishing and malware but it also sends // informations to google together with an unique id called wrkey. user_pref("browser.safebrowsing.enabled", false); user_pref("browser.safebrowsing.downloads.remote.url", ""); user_pref("browser.safebrowsing.phishing.enabled", false); user_pref("browser.safebrowsing.blockedURIs.enabled", false); user_pref("browser.safebrowsing.downloads.enabled", false); user_pref("browser.safebrowsing.downloads.remote.enabled", false); user_pref("browser.safebrowsing.appRepURL", ""); user_pref("browser.safebrowsing.malware.enabled", false); ///// Disable malware scan // The malware scan sends an unique identifier for each downloaded file to // Google. user_pref("browser.safebrowsing.appRepURL", ""); user_pref("browser.safebrowsing.malware.enabled", false); ///// Disable DNS over HTTPS // DNS over HTTP (DoH), aka. Trusted Recursive Resolver (TRR), uses a server // run by Cloudflare to resolve hostnames, even when the system uses another // (normal) DNS server. This setting disables it and sets the mode to // explicit opt-out (5). // user_pref("network.trr.mode", 5); ///// Disable preloading of the new tab page. // By default Firefox preloads the new tab page (with website thumbnails) in // the background before it is even opened. user_pref("browser.newtab.preload", false); ///// Disable about:addons' Get Add-ons panel // The start page with recommended addons uses google analytics. user_pref("extensions.getAddons.showPane", false); user_pref("extensions.webservice.discoverURL", ""); ///// Disable check for captive portal. // By default, Firefox checks for the presence of a captive portal on every // startup. This involves traffic to Akamai. user_pref("network.captive-portal-service.enabled", false); ///// Disables playback of DRM-controlled HTML5 content // if enabled, automatically downloads the Widevine Content Decryption Module // provided by Google Inc. Details user_pref("media.eme.enabled", true); ///// Disables the Widevine Content Decryption Module provided by Google Inc. // Used for the playback of DRM-controlled HTML5 content Details // user_pref("media.gmp-widevinecdm.enabled", false); ///// Disable access to device sensor data // Disallow websites to access sensor data (ambient light, motion, device // orientation and proximity data). user_pref("device.sensors.ambientLight.enabled", false); user_pref("device.sensors.enabled", false); user_pref("device.sensors.motion.enabled", false); user_pref("device.sensors.orientation.enabled", false); user_pref("device.sensors.proximity.enabled", false); ///// Disable Firefox Suggest // The Firefox Suggest feature allows Mozilla to provide search suggestions in // the US, which uses your city location and search keywords to send // suggestions. This is also used to serve advertisements. user_pref("browser.urlbar.groupLabels.enabled", false); user_pref("browser.urlbar.quicksuggest.enabled", false); ///// Disable Javascript in PDF viewer // Disables executing of JavaScript in the PDF form viewer. It is possible that // some PDFs are not rendered correctly due to missing functions. // user_pref("pdfjs.enableScripting", false); //// Privacy ///// Fake another Useragent // Using a popular useragent string avoids attracting attention i.e. with an // Iceweasel UA. (keep blank to use the default) // user_pref("general.useragent.override", ""); ///// Block Cookies // Block 3rd-Party cookies or even all cookies. // Block Cookies, which are not from the site you're visiting. You will rarely // notice that something is missing, but it hugely improves your privacy. user_pref("network.cookie.cookieBehavior", 1); ///// Block Referer // Firefox tells a website, from which site you're coming (the so called // referer). You can find more detailed settings in this ghacks article or // install the RefControl extension for per domain settings. // Send referer only on the same domain user_pref("network.http.referer.XOriginPolicy", 2); ///// Disable DOM storage // Disables DOM storage, which enables so called "supercookies". Some modern // sites will not work (i.e. missing "save" functions). // user_pref("dom.storage.enabled", false); ///// Disable IndexedDB (breaks things) // IndexedDB is a way, websites can store structured data. This can be abused // for tracking, too. Disabling causes problems when sites depend on it like // Tweetdeck or Reddit and extensions that use it to store their data. Some // users reported crashing tabs when IndexedDB is disabled. Only disable it, // when you know what you're doing. // user_pref("dom.indexedDB.enabled", false); ///// Disable the Offline Cache. // Websites can store up to 500 MB of data in an offline cache, to be able to // run even when there is no working internet connection. This could // possibly be used to store an user id. user_pref("browser.cache.offline.enable", false); ///// Sessionstore Privacy // This preference controls when to store extra information about a session: // contents of forms, scrollbar positions, cookies, and POST data. // Never store extra session data user_pref("browser.sessionstore.privacy_level", 0); ///// Disable Link Prefetching // Firefox prefetches the next site on some links, so the site is loaded even // when you never click. user_pref("network.prefetch-next", false); user_pref("network.dns.disablePrefetch", true); user_pref("network.dns.disablePrefetchFromHTTPS", true); user_pref("network.predictor.enabled", false); user_pref("network.predictor.enable-prefetch", false); ///// Disable speculative website loading. // In some situations Firefox already starts loading web pages when the mouse // pointer is over a link, i. e. before you actually click. This is to speed // up the loading of web pages by a few milliseconds. user_pref("network.http.speculative-parallel-limit", 0); user_pref("browser.urlbar.speculativeConnect.enabled", false); ///// Use a private container for new tab page thumbnails // Load the pages displayed on the new tab page in a private container when // creating thumbnails. user_pref("privacy.usercontext.about_newtab_segregation.enabled", true); ///// Disable WebGL // Disables the WebGL function, to prevent fingerprinting with WebGL. Another // issue is, that websites can (ab)use the full power of the graphics card. // WebGL is part of some fingerprinting scripts used in the wild. Some // interactive websites will not work, which are mostly games. // user_pref("webgl.disabled", true); ///// Override graphics card vendor and model strings in the WebGL API // Websites can read the graphics card vendor and model using a WebGL API. This // setting overrides both with " " without disabling WebGL. user_pref("webgl.renderer-string-override", " "); user_pref("webgl.vendor-string-override", " "); ///// Disable WebRTC // Disables the WebRTC function, which gives away your local ips. Some addons // like uBlock origin provide settings to prevent WebRTC from exposing local // ips without disabling WebRTC. // user_pref("media.peerconnection.enabled", false); ///// Disable the clipboardevents. // Disable that websites can get notifications if you copy, paste, or cut // something from a web page, and it lets them know which part of the page // had been selected. user_pref("dom.event.clipboardevents.enabled", false); ///// Disable Search Suggestions // Firefox suggests search terms in the search field. This will send everything // typed or pasted in the search field to the chosen search engine, even // when you did not press enter. // user_pref("browser.search.suggest.enabled", false); ///// Disable Search Keyword // When you mistype some url, Firefox starts a search even from urlbar. This // feature is useful for quick searching, but may harm your privacy, when // it's unintended. // user_pref("keyword.enabled", false); ///// Disable Fixup URLs // When you type "something" in the urlbar and press enter, Firefox tries // "something.com", if Fixup URLs is enabled. user_pref("browser.fixup.alternate.enabled", false); //// Website Tracking ///// Enable Do-not-Track // With the do not track feature, you tell websites, that you do not want to be // tracked. Most websites ignore this, so you need other privacy options as // well. user_pref("privacy.donottrackheader.enabled", true); user_pref("privacy.donottrackheader.value", 1); ///// Enable resistFingerprinting // The privacy.resistFingerprinting setting coming from the tor-browser hides // some system properties. See Bug #1308340 for more information. This // option may interfere with other privacy related settings, see the // discussion in our bug tracker. // user_pref("privacy.resistFingerprinting", true); ///// Enable Mozilla Trackingprotection // Firefox has a builtin tracking protection, which blocks a list of known // tracking sites. user_pref("privacy.trackingprotection.pbmode.enabled", true); user_pref("privacy.trackingprotection.enabled", true); user_pref("privacy.trackingprotection.fingerprinting.enabled", true); user_pref("privacy.trackingprotection.cryptomining.enabled", true); ///// Enable firstparty isolation. // FPI works by separating cookies on a per-domain basis. In this way tracking // networks won't be able to locate the same cookie on different sites. Note // that this might break third-party logins. user_pref("privacy.firstparty.isolate", true); ///// Disable Browser Pings // Firefox sends "ping" requests, when a website requests to be informed when a // user clicks on a link. user_pref("browser.send_pings", false); ///// Disable TLS session identifiers // TLS allows for session identifieres, which speed up the session resumption // when a connection was lost. These identifiers can be used for tracking. user_pref("security.ssl.disable_session_identifiers", true); ///// Disable Beacons // The Beacon feature allows websites to send tracking data after you left the // website. user_pref("beacon.enabled", false); ///// Disable the Battery API // Firefox allows websites to read the charge level of the battery. This may be // used for fingerprinting. user_pref("dom.battery.enabled", false); ///// Disable media device queries // Prevent websites from accessing information about webcam and microphone // (possible fingerprinting). // user_pref("media.navigator.enabled", false); ///// Disable form autofill // Automatically filled form fields are used for fingerprinting. This setting // disables automatic form filling until you click on the field. user_pref("signon.autofillForms", false); ///// Disable webaudio API // Disable webaudio API to prevent browser fingerprinting. See Mozilla Bug // #1288359. This can break web apps, like Discord, which rely on the API. // user_pref("dom.webaudio.enabled", false); ///// Disable video statistics // Prevent websites from measuring video performance (possible fingerprinting). // See Mozilla Bug 654550. user_pref("media.video_stats.enabled", false); //// Security ///// Disable automatic updates. // Updates are no longer installed automatically. You will still be notified // when an update is available and can install it. Avoids getting a new // (maybe addon incompatible) version. // user_pref("app.update.auto", false); ///// Disable searching for updates. // Disable searching for updates. This only works with the enterprise policy // download.. ///// Disable extension blocklist from mozilla. // The extension blocklist is used by mozilla to deactivate individual addons // in the browser, but as a side effect it gives mozilla the ultimate // control to disable any extension. Caution: When you disable the // blocklist, you may keep using known malware addons. // user_pref("extensions.blocklist.enabled", false); ///// Show Punycode. // This helps to protect against possible character spoofing. user_pref("network.IDN_show_punycode", true);