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

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Extensions are like apps for Firefox.

They add features to Firefox to make browsing faster, safer, or just plain fun.
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YouTube customization
YouTube customization
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Privacy & Security
Privacy & Security
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Reddit extensions
Reddit extensions
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Tab managers
  • Tab Session Manager

    Tab Session Manager

    Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.

    161,510 users

  • Auto Tab Discard

    Auto Tab Discard

    Increase browser speed and reduce memory load and when you have numerous open tabs.

    95,247 users

  • OneTab

    OneTab

    Save up to 95% memory and reduce tab clutter

    157,922 users

  • Tab Reloader (page auto refresh)

    Tab Reloader (page auto refresh)

    An easy-to-use tab reloader with custom reloading time settings for individual tabs

    77,541 users

Gaming & media extensions
  • Enhancer for YouTube™

    Enhancer for YouTube™

    Take control of YouTube and boost your user experience!

    573,725 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

    791,288 users

  • Return YouTube Dislike

    Return YouTube Dislike

    Returns ability to see dislike statistics on youtube

    905,630 users

  • Read Aloud: A Text to Speech Voice Reader

    Read Aloud: A Text to Speech Voice Reader

    Read out loud the current web-page article with one click. Supports 40+ languages.

    223,972 users

Accessibility extensions
  • Dark Reader

    Dark Reader

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

    1,322,918 users

  • Read Aloud: A Text to Speech Voice Reader

    Read Aloud: A Text to Speech Voice Reader

    Read out loud the current web-page article with one click. Supports 40+ languages.

    223,972 users

  • Dark Mode

    Dark Mode

    Dark theme and night shift mode for every website. Care your eyes, use Dark Mode for night and daily web browsing.

    50,302 users

  • Sidebery

    Sidebery

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

    53,264 users

“chat” tagged extensions
  • BetterTTV

    BetterTTV

    Enhances Twitch and YouTube with new features, emotes, and more.

    479,141 users

  • 7TV

    7TV

    Improve your viewing experience on Twitch and Kick with new features, emotes, vanity and performance.

    163,557 users

  • FrankerFaceZ

    FrankerFaceZ

    The Twitch Enhancement Suite - Get custom emotes and tons of new features you'll never want to go without.

    104,772 users

  • Watch2Gether

    Watch2Gether

    With Watch2Gether you can watch videos together with your friends. Enhance your Watch2Gether experience with our official browser extension.

    57,917 users