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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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2025 Staff Picks
2025 Staff Picks
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New Recommended Extensions
New Recommended Extensions
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Extension Starter Pack
Extension Starter Pack
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Recommended extensions
  • Clear Cache

    Clear Cache

    Advanced cache clearing with time periods, current tab filter, and smart notifications. Perfect for developers and power users. F9 shortcut included!

    TenSoja

    66,340 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

    102,240 users

  • History Cleaner

    History Cleaner

    Deletes browsing history older than a specified number of days.

    Rayquaza01

    15,608 users

  • Forecastfox - Weather Forecast

    Forecastfox - Weather Forecast

    International weather forecasts with easy and convenient settings

    Oleksandr

    11,866 users

Trending themes
Tab managers
  • OneTab

    OneTab

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

    OneTab Team

    167,144 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

    155,626 users

  • Auto Tab Discard

    Auto Tab Discard

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

    tlintspr

    79,756 users

  • Tree Style Tab

    Tree Style Tab

    Show tabs like a tree.

    Piro (piro_or)

    170,859 users

Social media extensions
  • Return YouTube Dislike

    Return YouTube Dislike

    Returns ability to see dislike statistics on youtube

    Dmitry Selivanov

    941,047 users

  • BetterTTV

    BetterTTV

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

    NightDev

    507,700 users

  • Sink It for Reddit

    Sink It for Reddit

    Upgrade your Reddit experience with color coded comments, easier nav, sub-reddit blocking, gestures for upvoting, ad+nag blocking, and more. It's like RES, for mobile!

    SpecterAscendant

    16,519 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

    34,780 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

    1,314,152 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

    209,653 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

    47,880 users

  • Sidebery

    Sidebery

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

    mbnuqw

    59,760 users

“video downloader” tagged extensions
  • Video DownloadHelper

    Video DownloadHelper

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

    vdh

    1,822,743 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

    380,019 users

  • Download Video and Flash - HD Download

    Download Video and Flash - HD Download

    Download Video and Flash - HD Download is a great download helper tool that lets you download video and Flash games very easily. Download from YouTube, Facebook, Dailymotion, Vimeo and more. Download and enjoy! Download now!

    Download Flash and Video Team

    53,427 users

  • Instagram Downloader

    Instagram Downloader

    Help users download images and videos easily on Instagram

    konka

    33,346 users

Change the way Firefox looks with themes.

Change the way Firefox looks with themes.