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
  • GIPHY for Firefox

    GIPHY for Firefox

    Bring the power of a GIF search engine anywhere on the web. Respond to emails, tweets and more with GIFs quickly and easily. Add GIPHY GIFs to your Gmail, Facebook, Twitter and more. Just search, drag and drop or right click!

    7,046 users

  • Measure-it

    Measure-it

    Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

    23,083 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

    678,235 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!

    17,149 users

Top rated extensions
  • SteamDB

    SteamDB

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

    85,098 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.

    109,291 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

    678,235 users

  • Yomitan

    Yomitan

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

    26,865 users

Trending extensions
  • Time Tracker - Web Habit Builder

    Time Tracker - Web Habit Builder

    Track time, analyze your habits and block addictive sites

    692 users

  • PhotoShow

    PhotoShow

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

    9,536 users

  • Chrome Mask

    Chrome Mask

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

    37,225 users

  • Immersive Translate - Translate Website & PDF

    Immersive Translate - Translate Website & PDF

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

    75,610 users