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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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Extension Starter Pack
Extension Starter Pack
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Productivity extensions
Productivity extensions
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Privacy & Security
Privacy & Security
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Recommended extensions
  • Custom Scrollbars

    Custom Scrollbars

    Give Firefox a personal touch with customized scrollbars!

    Wesley Branton

    17,482 users

  • Clear Cache

    Clear Cache

    Global cache cleanup and site data (cookies/storage) with time periods and notifications. Great for developers. F9 shortcut included!

    TenSoja

    83,147 users

  • PopUpOFF

    PopUpOFF

    Removes and prevents popups, overlays and cookie notifications, other tools do not. Enjoy the original look of the internet.

    RomanistHere

    47,176 users

  • Tab Session Manager

    Tab Session Manager

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

    sienori

    152,728 users

Trending themes
Tab managers
  • Tab Reloader (page auto refresh)

    Tab Reloader (page auto refresh)

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

    James Fray

    77,462 users

  • Auto Tab Discard

    Auto Tab Discard

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

    tlintspr

    84,203 users

  • OneTab

    OneTab

    Save up to 95% memory and reduce tab clutter

    OneTab Team

    162,454 users

  • Tab Session Manager

    Tab Session Manager

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

    sienori

    152,728 users

Social media extensions
  • Return YouTube Dislike

    Return YouTube Dislike

    Returns ability to see dislike statistics on youtube

    Dmitry Selivanov

    927,815 users

  • BetterTTV

    BetterTTV

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

    NightDev

    489,122 users

  • YouTube Search Fixer

    YouTube Search Fixer

    Remove ALL distracting search results, redirect shorts back to legacy page and try little visual changes suited for low resolution screens.

    Phoenix

    34,213 users

  • Control Panel for Twitter

    Control Panel for Twitter

    Gives you more control over Twitter and adds missing features and UI improvements

    Jonny Buchanan

    48,449 users

Recommended themes
Accessibility extensions
  • Dark Reader

    Dark Reader

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

    Dark Reader Ltd

    1,304,300 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.

    LSD Software

    216,250 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.

    Dark Mode

    49,003 users

  • Sidebery

    Sidebery

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

    mbnuqw

    56,687 users

“download” tagged extensions
  • Video DownloadHelper

    Video DownloadHelper

    Download videos from the web. Easy, smart, no tracking.

    vdh

    1,807,072 users

  • Easy Youtube Video Downloader Express

    Easy Youtube Video Downloader Express

    A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.

    Dishita

    349,735 users

  • Download All Images

    Download All Images

    Easily save images with a wide range of customization features, such as file size, dimensions, and image type.

    Joe Ertaba

    108,292 users

  • SingleFile

    SingleFile

    Save an entire web page—including images and styling—as a single HTML file.

    gildas

    81,607 users

Change the way Firefox looks with themes.

Change the way Firefox looks with themes.