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

RECOMMENDED

Sidebery

Tabs and bookmarks neatly organized in a Firefox side view.
Get the extension

Extensions are like apps for Firefox.

They add features to Firefox to make browsing faster, safer, or just plain fun.
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Anti-tracking extensions
Anti-tracking extensions
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Essential add-ons
Essential add-ons
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Writing tools
Writing tools
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Tab managers
  • Tree Style Tab

    Tree Style Tab

    Show tabs like a tree.

    177,920 users

  • OneTab

    OneTab

    OneTab - Too many tabs? Convert tabs to a list and reduce browser memory

    167,623 users

  • Tab Session Manager

    Tab Session Manager

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

    152,208 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

    76,221 users

Gaming & media extensions
  • 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

    685,074 users

  • Return YouTube Dislike

    Return YouTube Dislike

    Returns ability to see dislike statistics on youtube

    925,327 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.

    204,787 users

  • BetterTTV

    BetterTTV

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

    505,566 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.

    1,285,157 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.

    204,787 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.

    42,565 users

  • Sidebery

    Sidebery

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

    61,572 users

“twitch” tagged extensions
  • BetterTTV

    BetterTTV

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

    505,566 users

  • 'Improve YouTube!'  🎧 (For YouTube & Video)

    'Improve YouTube!' 🎧 (For YouTube & Video)

    Youtube Extension. Powerful but lightweight. Enrich your Youtube and content selection. Make YouTube tidy and smart! (Layout, Filters, Shortcuts, Playlist)

    109,621 users

  • Turn Off the Lights for Firefox

    Turn Off the Lights for Firefox

    The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube and Beyond. Dark mode for all websites. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, etc.

    46,174 users

  • Adaptive Tab Bar Color

    Adaptive Tab Bar Color

    Changes the color of Firefox theme to match the website’s appearance.

    36,170 users