I like to keep Firefox fast, minimal, and private. Here are the settings:
browser.startup.page = 3– restore previous sessionbrowser.startup.homepage = "https://fbull.de"– set homepagebrowser.tabs.groups.enabled = true– enable tab groupsbrowser.tabs.groups.smart.enabled = true– enable smart tab groupingbrowser.tabs.loadInBackground = true– open new tabs in backgroundbrowser.tabs.warnOnClose = false– no warning on closing multiple tabsbrowser.tabs.warnOnOpen = false– no warning on opening many tabsbrowser.ml.chat.enabled = false– disable ML chat featurebrowser.urlbar.suggest.bookmark = false– don’t suggest bookmarksbrowser.urlbar.suggest.history = true– suggest from historybrowser.urlbar.suggest.openpage = false– don’t suggest open tabsbrowser.urlbar.suggest.pocket = false– don’t suggest Pocket contentbrowser.urlbar.suggest.searches = false– don’t suggest searchesbrowser.newtabpage.activity-stream.discoverystream.enabled = false– disable discovery streambrowser.newtabpage.activity-stream.showSponsored = false– disable sponsored contentbrowser.translations.enable = false– disable built-in translationsprivacy.trackingprotection.emailtracking.enabled = true– block email trackingprivacy.trackingprotection.enabled = true– enable tracking protectionprivacy.trackingprotection.socialtracking.enabled = true– block social trackingprivacy.donottrackheader.enabled = true– send Do Not Track headerprivacy.fingerprintingProtection = true– enable fingerprinting protectionprivacy.resistFingerprinting = true– resist fingerprintingdom.security.https_only_mode_ever_enabled = true– remember HTTPS-only preferencedom.security.https_only_mode = true– enforce HTTPS-only modeextensions.pocket.enabled = false– disable Pocket
These tweaks disable things I don’t need (Pocket, ML chat, sponsored content) while enabling stronger privacy protections (tracking protection, HTTPS-only, anti-fingerprinting).
Simple, private, and efficient.