To use these add-ons, you'll need to download Firefox.

Extensions

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

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Recommended extensions
  • Flagfox

    Flagfox

    Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

    118,991 users

  • Print Edit WE

    Print Edit WE

    Edit the contents of a web page prior to printing or saving. Elements in the web page can be edited, formatted, hidden or deleted. Unwanted content, such as adverts and sidebars, can easily be removed.

    41,026 users

  • Webmail Ad Blocker

    Webmail Ad Blocker

    Remove advertising clutter from your web-based email. Expand your viewable area by blocking and removing ads on the right-hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.

    28,831 users

  • Search by Image

    Search by Image

    A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.

    306,762 users

Top rated extensions
  • 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.

    69,255 users

  • SponsorBlock - Skip Sponsorships on YouTube

    SponsorBlock - Skip Sponsorships on YouTube

    Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app

    421,917 users

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    1,232,259 users

  • 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.

    266,943 users

Trending extensions
  • Custom Scrollbars

    Custom Scrollbars

    Give Firefox a personal touch with customized scrollbars!

    35,352 users

  • Sidebery

    Sidebery

    Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.

    81,030 users

  • FoxyProxy Standard

    FoxyProxy Standard

    FoxyProxy is an open-source, advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. No paid accounts are necessary; bring your own proxies or buy from any vendor. The original proxy tool, since 2006.

    206,704 users

  • Dark Background and Light Text

    Dark Background and Light Text

    Make every web page (or just the pages you want) display light text on dark backgrounds. All color variations are fully customizable.

    47,297 users