Firefox presets (user.js file)

#
# This file overrides settings placed in prefs.js file at startup.
# These settings are applied at startup so you'll have to restart for it to take effect.
#
# For more information see: http://kb.mozillazine.org/User.js_file
#
# I recommend reading up on what each option does before using the option. Some may break sites that you frequently use.
#
# To disable a particular option just add a # to the beginning of the line.
#
# To use this save it as "user.js" and place it in your profile folder.
#


####Annoyances####
#Apparently prevents the default Mozilla bookmarks from being recreated.
user_pref("browser.bookmarks.restore_default_bookmarks", false);


#Disable Various Animations
user_pref("browser.tabs.animate", false);
user_pref("browser.preferences.animateFadeIn", false);
user_pref("browser.fullscreen.animate", false);
user_pref("browser.download.animateNotifications", false);
user_pref("browser.panorama.animate_zoom", false);


#Tweak the timing on the entering and leaving fullscreen animation
user_pref("full-screen-api.transition-duration.enter", 0);
user_pref("full-screen-api.transition-duration.leave", 0);


#Hide First Run Tips
user_pref("browser.customizemode.tip0.shown", true);
user_pref("browser.rights.3.shown", true);


#Disable Newtab Page
user_pref("browser.newtabpage.enabled", false);
user_pref("browser.newtabpage.enhanced", false);
user_pref("browser.newtabpage.introShown", true);




####Security####
#Stop sites from automatically redirecting and refreshing pages.
#Some download sites redirect you to their download server so this may interfere with that but most sites usually have a way to force start the download anyway.
user_pref("accessibility.blockautorefresh", true);


#Disable non-latin characters in URLs
#These are occasionally used to spoof urls.
user_pref("network.IDN_show_punycode", true);
user_pref("network.IDN.use_whitelist", false);


#Disables DRM plugin functionality.
user_pref("media.eme.enabled", false);




#####Privacy#####
#Disables automatically filling in information on websites
user_pref("browser.formfill.enable", false);


#Prevent videos from playing (and downloading) automatically
user_pref("media.autoplay.enabled", false);


#Disable Firefox Hello
user_pref("loop.enabled", false);


#Disables WebRTC Functionality
user_pref("media.peerconnection.enabled", false);
user_pref("media.peerconnection.turn.disable", true);
user_pref("media.peerconnection.use_document_iceservers", false);
user_pref("media.peerconnection.video.enabled", false);
user_pref("media.peerconnection.identity.timeout", 1);


#Disable telemetry
user_pref("toolkit.telemetry.enabled", false);


#Disable Prefetching
user_pref("network.predictor.enabled", false);
user_pref("network.prefetch-next", false);
user_pref("network.dns.disablePrefetch", true);
user_pref("network.http.speculative-parallel-limit", 0);



#Disable Google's Safebrowsing Service
user_pref("browser.safebrowsing.enabled", false);
user_pref("browser.safebrowsing.downloads.enabled", false);
user_pref("browser.safebrowsing.malware.enabled", false);


#Disable GeoLocation
user_pref("browser.beacon.enabled", false);
user_pref("geo.enabled", false);
user_pref("geo.wifi.logging.enabled", false);
user_pref("geo.wifi.url", "");


#Disable Javascript Functions
user_pref("dom.event.clipboardevents.enabled", false)
user_pref("dom.battery.enabled", false)
user_pref("browser.send_pings", false)


#Disables WebGL (will break games and other things that make use of it.)
user_pref("webgl.disabled", true)


#Disable Social Media Integration
user_pref("social.directories", "");
user_pref("social.whitelist", "");
user_pref("social.manifest.facebook", "");
user_pref("social.remote.install.enabled", false);
user_pref("social.toast-notifications.enabled", false);


#Device tracking/statistics
user_pref("device.sensors.enabled", false)
user_pref("camera.control.face_detection.enabled", false)
user_pref("camera.control.autofocus_moving_callback.enabled", false)


#Enables Tracking Protection through the Disconnect blocklist service.
#If you have an adblocker with Disconnect filters this is not necessary and may #increase memory usage.
#user_pref("privacy.trackingprotection.enabled", true)


#Enable the "Do Not Track" Header
#Does not actually prevent tracking, merely requests that sites do not track you. Having the header enabled actually makes you more identifiable.

#user_pref("privacy.donottrackheader.enabled", true)


#Disable Potentially Unsafe Cryptographic Ciphers
user_pref("security.tls.unrestricted_rc4_fallback", false)
user_pref("security.tls.insecure_fallback_hosts.use_static_list", false)
user_pref("security.tls.version.min", 1)
user_pref("security.ssl.require_safe_negotiation", true)
user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true)
user_pref("security.ssl3.rsa_seed_sha", true)
user_pref("security.OCSP.enabled", true)

user_pref("security.ssl3.rsa_rc4_128_sha", false)
user_pref("security.ssl3.rsa_rc4_128_md5", false)
user_pref("security.ssl3.rsa_des_ede3_sha", false)
user_pref("security.ssl3.ecdhe_ecdsa_rc4_128_sha", false)
user_pref("security.ssl3.ecdhe_rsa_rc4_128_sha", false)

#Perfect forward secrecy. Can break stuff
#user_pref("security.ssl3.rsa_aes_256_sha", false)

#Force TLS 1.2 or Higher
user_pref("security.tls.version.min=3", 3);


#Disable styling for visited links, can be used to snoop on your history using javascript.
#May not be necessary anymore see: https://developer.mozilla.org/en-US/docs/Web/CSS/Privacy_and_the_:visited_selector
user_pref("layout.css.visited_links_enabled", false);