Extensions

Explore powerful tools and features to customize Firefox and make the browser all your own.

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Recommended extensions
  • Download Manager (S3)

    Download Manager (S3)

    View and manage downloads from a tidy status bar This is a new life in Firefox 26+ for old well-known addon Download Statusbar New Features: Replace Downloads Library page. Now you have full control of your downloads history!

    79,409 users

  • Undo Close Tab

    Undo Close Tab

    Allows you to restore the last closed tab with just one button click and gives you access to the list of recently closed tabs in the button context menu.

    33,862 users

  • Grammar and Spell Checker - LanguageTool

    Grammar and Spell Checker - LanguageTool

    With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.

    53,220 users

  • Default Bookmark Folder

    Default Bookmark Folder

    Allows you to choose the default bookmark location folder and quickly bookmark pages via a dedicated icon.

    26,705 users

Top rated extensions
  • 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.

    205,369 users

  • Bitwarden - Free Password Manager

    Bitwarden - Free Password Manager

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

    131,103 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.

    29,758 users

  • Enhancer for YouTube™

    Enhancer for YouTube™

    Tons of features to improve your user experience on YouTube™.

    596,505 users

Trending extensions
  • LASER CAT

    LASER CAT

    This is probably a laser cat add-on so you can shoot laser cat lasers at things.

    2,679 users

  • User-Agent Switcher and Manager

    User-Agent Switcher and Manager

    Spoofs User-Agent strings of your browser with a new one globally, randomly or per hostname

    122,773 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.

    51,470 users

  • Firefox Color

    Firefox Color

    Build, save and share beautiful Firefox themes.

    34,380 users