Updated 8 Mars 2019


Mozilla Firefox fournit de nombreux outils intégrés pour une configuration détaillée.
To get to the hidden settings of Firefox, go to the following:

à propos de : config

Réglages par défaut

paramètre valeur description
browser.fixup.alternate.suffix .ru Extension de nom de domaine
browser.startup.homepage Page d'accueil de Firefox
browser.startup.homepage_override.mstone ignorer Sauter la première configuration de lancement
browser.tabs.warnOnClose erroné Ne pas avertir lors de la fermeture de plus d'un onglet Droid Sans Mono Slashed Droid Sans Times New Roman


paramètre valeur description
browser.cache.disk.capacity 102400 Cache disque, nécessite la désactivation de "browser.cache.disk.smart_size.enabled"
browser.cache.disk.smart_size.enabled erroné Désactive le réglage automatique de la taille du cache
browser.cache.use_new_backend 1

Enable the new HTTP caching system. Improves the responsiveness of the interface
|browser.sessionhistory.max_total_viewers|3|Nombre maximum de pages mises en cache dans chaque onglet|
|browser.sessionstore.interval|60000|Intervalle d'enregistrement automatique en millisecondes|
|browser.tabs.animate|erroné|Onglet animation. Désactiver cette fonction accélère le déplacement des onglets, l'ouverture des pages, etc.|
|browser.tabs.remote.autostart|true|Mode multiprocesseur|
|browser.tabs.remote.autostart|true|Processing each tab in a separate process|
|dom.ipc.plugins.asyncInit.enabled|true|Asynchronous plugin initialization|
|dom.ipc.processCount|4|Number of processors used (support enabled in browser.tabs.remote.autostart)|
|javascript.options.asyncstack|true|Asynchronous stacking|
|memory.free_dirty_pages|true|Releasing unused pages after closing tabs|
|memory.free_dirty_pages|true|Releases memory after closing tabs|
|network.http.pipelining.max-optimistic-requests|8|Maximum number of requests|
|network.http.pipelining.ssl|true|Pipeline requests via SSL connection|
|network.http.pipelining|true|Use multiple queries in one connection to the server|
|network.http.proxy.pipelining|true|Use multiple queries in one connection to the server when using a proxy|
|network.dnsCacheEntries|200|Number of cached DNS names|
|network.dnsCacheExpiration|240|Time in seconds after which the DNS name cache expires|
|network.http.request.max-start-delay|5|Time in seconds before establishing a new connection to the server, to pause queries before creating a new connection|
|browser.sessionstore.max_tabs_undo|5|Number of Firefox tabs that you can reopen if they close|
|browser.sessionstore.max_windows_undo|2|Number of recently closed windows, similar to browser.sessionstore.max_tabs_undo|
|browser.bookmarks.max_backups|2|Number of backups for Firefox to close faster|
|browser.newtabpage.enhanced|erroné|Do not suggest sites in new page tabs. "datareporting.sessions.current.clean" must be enabled|
|datareporting.sessions.current.clean|true|Do not collect information about the pages viewed. Option required to disable "browser.newtabpage.enhanced"|
|extensions.e10sBlockedByAddons|erroné|Allow to block multiprocessing by extensions|
|extensions.e10sBlocksEnabling|erroné|Allow to block multiprocessing|

Do not collect Firefox usage statistics. Reduce memory consumption, stop sending data to Mozilla, for privacy and performance reasons

paramètre valeur
browser.selfsupport.url [HTML_REMOVED]
browser.tabs.crashReporting.sendReport erroné
datareporting.healthreport.about.reportUrl [HTML_REMOVED]
datareporting.healthreport.infoURL [HTML_REMOVED]
datareporting.healthreport.uploadEnabled erroné
dom.ipc.plugins.flash.subprocess.crashreporter.enabled erroné
dom.ipc.plugins.reportCrashURL erroné
experiments.enabled erroné
experiments.manifest.uri [HTML_REMOVED]
experiments.supported [HTML_REMOVED]
extensions.getAddons.cache.enabled erroné
network.allow-experiments erroné
security.ssl.errorReporting.enabled erroné
toolkit.crashreporter.infoURL [HTML_REMOVED]
toolkit.telemetry.archive.enabled erroné
toolkit.telemetry.cachedClientID [HTML_REMOVED]
toolkit.telemetry.infoURL [HTML_REMOVED]
toolkit.telemetry.server [HTML_REMOVED]

Disable integrated social services

paramètre valeur
social.directories [HTML_REMOVED]
social.remote-install.enabled erroné
social.share.activationPanelEnabled erroné
social.shareDirectory [HTML_REMOVED]
social.toast-notifications.enabled erroné
social.whitelist [HTML_REMOVED]

Disable the "Pocket" service and delete your ID, thus making your browser anonymous

paramètre valeur
extensions.pocket.api [HTML_REMOVED]
extensions.pocket.enabled erroné
extensions.pocket.oAuthConsumerKey [HTML_REMOVED] [HTML_REMOVED]

Consider the SSL connection as untrusted if the query for a repeated "session renegotiation" is incorrect

paramètre valeur
security.ssl.treat_unsafe_negotiation_as_broken true

Disable sharing and geolocation

paramètre valeur [HTML_REMOVED]
geo.enabled erroné
geo.wifi.uri [HTML_REMOVED]

Force proxy off (by default, system settings will be used)

paramètre valeur
network.proxy.type 0

Prevent scripts from manipulating Firefox windows

paramètre valeur
dom.disable_beforeunload true
dom.disable_window_move_resize true
dom.disable_window_open_feature.close true
dom.disable_window_open_feature.menubar true
dom.disable_window_open_feature.minimizable true
dom.disable_window_open_feature.personalbar true
dom.disable_window_open_feature.titlebar true
dom.disable_window_open_feature.toolbar true

Forbid sending tracking "pings" when clicking on links and closing pages

paramètre valeur
beacon.enabled erroné

Disable the Adobe Primetime Content Decryption Module (DRM) plugin, which allows to track your browser

paramètre valeur
browser.eme.ui.enabled erroné
media.eme.apiVisible erroné

Disable access from sites to cameras and microphones. Disable other multimedia features that are not used on regular sites, but are a threat to privacy or security

paramètre valeur
camera.control.face_detection.enabled erroné
media.getusermedia.screensharing.allowed_domains [HTML_REMOVED]
media.getusermedia.screensharing.enabled erroné
media.navigator.enabled erroné
media.video_stats.enabled erroné

Enable statistics

paramètre valeur description erroné Do not send search queries. If you have disabled this function, you will still get hints when trying to search something, but only based on the local search history.
dom.battery.enabled erroné Disable the Battery API monitor
dom.enable_performance erroné Do not send information about the start and end time of the page load.
extensions.getAddons.cache.enabled erroné Send information about the installed add-ons on a daily basis
network.http.pipelining.aggressive true Hold problematic connections to the server
network.proxy.socks_remote_dns true Disable DNS bypassing proxy settings


paramètre valeur description
browser.reader.detectedFirstArticle true Disable the "Read View" notification
privacy.trackingprotection.introCount 20 Disable the "Hw does the tracking protection work" notification
general.warnOnAboutConfig erroné Warning when trying to go to about:config


paramètre valeur description
browser.urlbar.trimURLs erroné Display the "http: //" prefix in the address bar
privacy.trackingprotection.enabled true Block suspicious sites that are not trusted in the Internet, as they are thought to be engaged in surveillance of users. Unfortunately, if you turn this off, you will not be allowed to see built-in Yandex maps with itineraries.
privacy.donottrackheader.enabled true Warn the sites that you do not want to be tracked
dom.popup_maximum 5 Maximum number of pop-up windows opened by a script
browser.rights.3.shown true
Do not inform about the permissions
startup.homepage_welcome_url [HTML_REMOVED] Welcome line at the first start
browser.slowStartup.notificationDisabled true Disables calculation of browser startup time with warning if it starts slowly
offline-apps.allow_by_default erroné Do not use Offline App Cache without explicit permission from the user