Extensions

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

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Recommended extensions
  • 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.

    17,351 users

  • Video DownloadHelper

    Video DownloadHelper

    The easy way to download and convert Web videos from hundreds of YouTube-like sites.

    2,993,605 users

  • Stylus

    Stylus

    Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.

    97,750 users

  • Facebook Container

    Facebook Container

    Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.

    1,993,056 users

Top rated extensions
  • Decentraleyes

    Decentraleyes

    Protects you against tracking through "free", centralized, 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.

    291,483 users

  • Bitwarden - Free Password Manager

    Bitwarden - Free Password Manager

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

    224,889 users

  • Swift Selection Search

    Swift Selection Search

    Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!

    16,765 users

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    1,394,310 users

Trending extensions
  • Midnight Lizard

    Midnight Lizard

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

    10,205 users

  • Tabby - Window & Tab Manager

    Tabby - Window & Tab Manager

    Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!

    5,750 users

  • Metastream Remote

    Metastream Remote

    Watch streaming media with friends.

    22,002 users

  • Tomato Clock

    Tomato Clock

    Tomato Clock is a simple browser extension that helps with online time management.

    20,178 users