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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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Create a Firefox account to sync across devices
Create a Firefox account to sync across devices
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Privacy beyond browser extensions
Privacy beyond browser extensions
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Media enhancers for Firefox
Media enhancers for Firefox
Explore extensions
Recommended extensions
  • YouTube Video and Audio Downloader (WebEx)

    YouTube Video and Audio Downloader (WebEx)

    Download YouTube videos in all available formats and extract the original audio files

    179,392 users

  • FoxyProxy Standard

    FoxyProxy Standard

    FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

    177,441 users

  • Measure-it

    Measure-it

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

    29,338 users

  • Foxy Gestures

    Foxy Gestures

    Mouse gestures for Firefox. A web extension alternative to FireGestures created by a long time FireGestures user.

    46,089 users

Popular themes
Enhanced privacy extensions
  • Ghostery – Privacy Ad Blocker

    Ghostery – Privacy Ad Blocker

    Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.

    1,432,147 users

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    865,444 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.

    246,262 users

  • Facebook Container

    Facebook Container

    Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.

    936,524 users

Popular extensions
  • uBlock Origin

    uBlock Origin

    Finally, an efficient blocker. Easy on CPU and memory.

    5,343,287 users

  • Video DownloadHelper

    Video DownloadHelper

    The easy way to download and convert Web videos from hundreds of YouTube-like sites.

    2,821,732 users

  • NoScript Security Suite

    NoScript Security Suite

    The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.

    1,672,345 users

  • Ghostery – Privacy Ad Blocker

    Ghostery – Privacy Ad Blocker

    Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.

    1,432,147 users

Recommended themes
Recommended password managers
  • LastPass Password Manager

    LastPass Password Manager

    LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

    959,550 users

  • Bitwarden - Free Password Manager

    Bitwarden - Free Password Manager

    A secure and free password manager for all of your devices.

    170,400 users

  • RoboForm Password Manager

    RoboForm Password Manager

    RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically

    92,508 users

  • 1Password X – Password Manager

    1Password X – Password Manager

    The best way to experience 1Password in your browser. Easily sign in to sites, generate passwords, and store secure information, including logins, credit cards, notes, and more.

    73,311 users