Extensions are like apps for your browser.

They add features to Firefox to make browsing faster, smarter, or just plain fun.

Recommended extensions
  • AdBlocker for YouTube™

    AdBlocker for YouTube™

    Removes all annoying Ads from YouTube

    256,271 users

  • Snap Links Plus

    Snap Links Plus

    Select a number of links with a rectangle and open them in new tabs. You can also lasso checkboxes to quickly check or uncheck them. Works with radio buttons as well.

    28,601 users

  • Voice Fill

    Voice Fill

    Voice Fill uses speech recognition to enable voice search on Google, Yahoo and Duck Duck Go search pages. You can see it in action in this video: https://www.youtube.com/watch?v=wjvM18UWMmM

    4,473 users

  • Auto Tab Discard

    Auto Tab Discard

    Use native tab discard method to automatically reduce memory usage of inactive tabs

    29,970 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.

    1,270,902 users

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    762,415 users

  • Decentraleyes

    Decentraleyes

    Protects you against tracking through "free", centralised, 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.

    215,178 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.

    784,311 users

Popular extensions
  • uBlock Origin

    uBlock Origin

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

    5,069,051 users

  • NoScript Security Suite

    NoScript Security Suite

    The best security you can get in a web browser! Allow active content to run only from sites you trust, and protect yourself against XSS other web security exploits. Disabled and can't reinstall? https://tinyurl.com/moz-ext-cert

    1,581,952 users

  • Ghostery – Privacy Ad Blocker

    Ghostery – Privacy Ad Blocker

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

    1,270,902 users

  • Privacy Badger

    Privacy Badger

    Automatically learns to block invisible trackers.

    762,415 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.

    900,552 users

  • Bitwarden - Free Password Manager

    Bitwarden - Free Password Manager

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

    140,815 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.

    57,005 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

    88,173 users