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RECOMMENDED

EPUBReader

Read ePUB files right in Firefox—increase font size, page dimensions & more.
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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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Privacy & Security
Privacy & Security
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Twitch customization
Twitch customization
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Recommended extensions
  • 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

    100,472 users

  • Custom Scrollbars

    Custom Scrollbars

    Give Firefox a personal touch with customized scrollbars!

    Wesley Branton

    18,608 users

  • Copy PlainText

    Copy PlainText

    Copy Plain Text without any formatting

    erosman

    26,575 users

  • DuckDuckGo Search & Tracker Protection

    DuckDuckGo Search & Tracker Protection

    Actively protects your data in your current browser

    DuckDuckGo

    1,163,678 users

Popular themes
Tab managers
  • Tree Style Tab

    Tree Style Tab

    Show tabs like a tree.

    Piro (piro_or)

    169,306 users

  • OneTab

    OneTab

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

    OneTab Team

    158,927 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

    147,089 users

  • New Tab Override

    New Tab Override

    New Tab Override allows you to set the page that shows whenever you open a new tab.

    Sören Hentzschel

    60,579 users

Social media extensions
  • Return YouTube Dislike

    Return YouTube Dislike

    Returns ability to see dislike statistics on youtube

    Dmitry Selivanov

    907,326 users

  • BetterTTV

    BetterTTV

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

    NightDev

    494,561 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

    33,594 users

  • Augmented Steam

    Augmented Steam

    Augments your Steam Experience

    IsThereAnyDeal

    61,686 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

    1,266,521 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

    200,174 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

    42,483 users

  • Sidebery

    Sidebery

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

    mbnuqw

    58,609 users

“twitter” tagged extensions
  • TWP - Translate Web Pages

    TWP - Translate Web Pages

    Translate your page in real time using Google, Bing or Yandex. It is not necessary to open new tabs.

    Filipe Dev

    582,301 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)

    code-for-charity

    106,093 users

  • Immersive Translate - Translate Website & PDF

    Immersive Translate - Translate Website & PDF

    Free Translate Website, Translate PDF & Epub eBook, Translate Video Subtitles in Bilingual

    Immersive Translate

    88,884 users

  • Block Site

    Block Site

    A customizable, password-protected website blocker and redirector.

    Ray

    69,721 users

Change the way Firefox looks with themes.

Change the way Firefox looks with themes.