Extensions

Explore powerful tools and features to customise Firefox and make the browser all your own.

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Recommended extensions
  • Midnight Lizard

    Midnight Lizard

    Custom color schemes for all websites: night mode, dark themes, blue light filter, screen shader, high contrast, grayscale, etc.

    5,435 users

  • Forget Me Not - Forget cookies & other data

    Forget Me Not - Forget cookies & other data

    Make the browser forget website data (like cookies, local storage, etc.), except for the data you want to keep by adding domains to a whitelist, graylist, blacklist, or redlist.

    13,019 users

  • SoundFixer

    SoundFixer

    Lets you fix annoying sound problems in YouTube videos and such. Like audio in one channel only, too quiet or too loud. (Unfortunately, doesn't work on many other websites because of cross-domain issues — but it does work on YouTube.com!)

    18,536 users

  • Ghostery – Privacy Ad Blocker

    Ghostery – Privacy Ad Blocker

    Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.

    1,270,902 users

Top rated extensions
  • Decentraleyes

    Decentraleyes

    Protects you against tracking through "free", centralised, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.

    215,178 users

  • Bitwarden - Free Password Manager

    Bitwarden - Free Password Manager

    A secure and free password manager for all of your devices.

    140,815 users

  • LeechBlock NG

    LeechBlock NG

    LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.

    30,873 users

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    762,415 users

Trending extensions
  • User-Agent Switcher and Manager

    User-Agent Switcher and Manager

    Spoofs User-Agent strings of your browser with a new one globally, randomly or per hostname

    411,054 users

  • Dark Reader

    Dark Reader

    Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.

    255,401 users

  • Cookie Quick Manager

    Cookie Quick Manager

    An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.

    32,268 users

  • Block Site

    Block Site

    A customizable password protected website blocker and redirector

    19,305 users