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
  • Imagus

    Imagus

    With a simple mouse-over you can enlarge images and display images/videos from links.

    58,066 users

  • Video DownloadHelper

    Video DownloadHelper

    Download videos from the web. Easy, smart, no tracking.

    1,778,754 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!

    17,018 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.

    30,871 users

Top rated extensions
  • SteamDB

    SteamDB

    Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.

    85,649 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.

    108,795 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

    677,468 users

  • Yomitan

    Yomitan

    Powerful and versatile pop-up dictionary for language learning used by 100,000+ language learners.

    28,193 users

Trending extensions
  • Time Tracker - Web Habit Builder

    Time Tracker - Web Habit Builder

    Track time, analyze your habits and block addictive sites

    880 users

  • PhotoShow

    PhotoShow

    Hover to zoom and view high-definition images. Instantly enlarge visuals, crafted for all your favorite websites—and for you.

    11,661 users

  • Chrome Mask

    Chrome Mask

    Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.

    43,513 users

  • Immersive Translate - Translate Website & PDF

    Immersive Translate - Translate Website & PDF

    Free Translate Website, Translate PDF & Epub eBook, Translate Video Subtitles in Bilingual

    86,063 users