Firefox has more customization options than most users ever touch. Here are the ones that change how the browser actually feels to use, organized by what problem they solve.
If you hate opening apps to check the weather
Weather and time can live on a new tab instead. The Weather and Clock Dashboard extension replaces the new tab with current conditions and a live analog clock.
If you have too many tabs open right now
There are two separate problems here:
- Tabs you are actively using but cannot navigate quickly → use
Ctrl+Shift+Eto open the Firefox Tab Manager sidebar and search/filter tabs - "Research context" tabs you are keeping open to not forget → use Tab Manager and Session Saver to save them as a named session and close them
If you use the same 10 sites every day
Firefox's default new tab shows recent history. Speed Dial Hub shows your chosen shortcuts in a visual grid with custom icons and groups. Sites you visit every day load faster when they are one click from a new tab.
If you do not want dark mode to follow you to bright sites
NightOwl applies dark mode to all websites and auto-schedules by sunset/sunrise. You add a whitelist of sites where you want the normal light theme. Dark mode everywhere, with exceptions.
If you need to capture a quick note while reading
Voice Notes records a voice memo via your microphone and saves it as an MP3 locally. Click, record, done — the file is in your Downloads folder. No app to open, no cloud, no account.
If you check the same news sites every morning
News Widget Dashboard shows RSS headlines from sources you subscribe to on the new tab. The same information as opening 5 news sites, with no ads and no algorithmic curation.
Firefox built-in features worth knowing
Container tabs: Firefox Multi-Account Containers lets you run multiple accounts for the same service simultaneously. Install from AMO: addons.mozilla.org/en-US/firefox/addon/multi-account-containers/
Reader mode: The book icon in the URL bar strips a webpage to just text and images. Useful for long-form reading. Has a dark background option.
Picture-in-picture: Right-click any video → "Watch in Picture-in-Picture". The video floats on top of other windows. Works on YouTube, Netflix, most sites.
Keyboard shortcut for muting a tab: Ctrl+M mutes the current tab.
Private window with specific containers: Ctrl+Shift+P opens a private window. For more granular separation, containers are the right tool.
All the extensions mentioned are from a series of 11 I built — see the full series.
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