To use these add-ons, you'll need to download Firefox.

Log in

15,591 extensions found in Appearance

Filter results
Search results
  • YouTube Channel Blocker

    YouTube Channel Blocker

    特定のチャンネルの動画を非表示にします (Block videos from specific channels.)

    ASK_Studio

    1,003 users

  • Youtube Ad Skipper

    Youtube Ad Skipper

    Ad Skipper is gives you less interrupted online streaming and skip or removes ad on behalf of you. It does not block an ads and auto skip or remove ads on MxPlayer, SonyLiv & Youtube web platform.

    Avinash Sakhreliya

    1,001 users

  • GaiaUpgrade

    GaiaUpgrade

    A third-party tool to improve interacting with GaiaOnline.

    gaiatools.com

    997 users

  • Drag-able Full-Screen Button

    Drag-able Full-Screen Button

    Double click a drag-able button to enter and exit full-screen mode. The new version also has an options page to set the location of the dot around four corners of the screen.

    Ohohyugioh

    996 users

  • Twitch Chat Danmaku

    Twitch Chat Danmaku

    Display the chat as danmaku(chat overlay) with fully customizable settings, compatible with emoticons!

    wheatup

    996 users

  • Reddit Comment Collapser

    Reddit Comment Collapser

    A more elegant solution for collapsing reddit comment trees. Reddit Comment Collapser is free and open source. Contributions welcome - https://github.com/tom-james-watson/reddit-comment-collapser

    tomjwatson

    989 users

  • YouTube Thumbnail Size Fixer

    YouTube Thumbnail Size Fixer

    Fix YouTube's layout: Display 4-12 videos per row instead of 3. Reduce scrolling & hide Shorts. Simple & fast!

    Chris

    986 users

  • YouTube SpeedUp

    YouTube SpeedUp

    A simple Firefox extension to speed up YouTube videos.

    GoliafRS

    982 users

  • vToad New Tab Page - Custom Live Wallpapers

    vToad New Tab Page - Custom Live Wallpapers

    Upload and set your own videos as your new tab live wallpaper, create shortcuts, set theme colors and more!

    vToad

    978 users

  • Yahoo! Mail Notifier

    Yahoo! Mail Notifier

    Notifies you when new emails arrived in your Yahoo! Mail box

    def00111

    975 users

  • Translator

    Translator

    Easy-to-use and powerful translator for your browser.

    Karl

    971 users

  • Make America Kittens Again

    Make America Kittens Again

    Replaces images of Donald Trump with kittens, because seriously, f*** that guy.

    tomroyal.com

    971 users

  • Smart Reader - Bionic Reader

    Smart Reader - Bionic Reader

    Modify a web page to make it more readable by bolding the beginning of a word (like bionic reading).

    Poucous

    968 users

  • Custom UserAgent String

    Custom UserAgent String

    Add a custom useragent string for desired URLs or domains.

    Linder

    956 users

  • Web Component DevTools

    Web Component DevTools

    Developer tooling for Web Components and Web Component Libraries

    Matsuuu

    955 users

  • Toggle dark mode

    Toggle dark mode

    Toggle the content’s color scheme between preferring light or dark (or inheriting)

    Cimbali

    955 users

  • Blank New Tab

    Blank New Tab

    Use a blank page as your new tab page.

    xofe

    951 users

  • YouTubeUtils

    YouTubeUtils

    Play videos at the highest quality, dynamically resize video player, 4x playback speed, extra hotkeys to loop video and autoplay, and more! Works on mobile, desktop, and embed videos.

    Andres Rodriguez

    950 users

  • PopUp

    PopUp

    Create a popup of pages with minimal browser UI; No bookmarks or navigation bar.

    aqt

    948 users

  • Clipboard Manager

    Clipboard Manager

    Easily access to recent clipboards via context-menu or toolbar popup.

    Muyor

    941 users

  • Onion Browser Button

    Onion Browser Button

    Easily browse the internet using TOR proxy with just one click!

    Benthum

    937 users

  • Copy As Plain Text

    Copy As Plain Text

    Easily copy the selected text without formatting to the clipboard via right-click menu.

    ilGur

    936 users

  • RotateView

    RotateView

    Rotate the entire page or rotate fullscreen view to best fit the device aspect ratio

    thabubble

    931 users

  • PX: Viewport Dimensions

    PX: Viewport Dimensions

    Displays the viewport dimensions when a browser window is resized.

    Luke Peters

    930 users

  • TablissNG

    TablissNG

    A beautiful, customizable New Tab page with various backgrounds and widgets. This is an actively maintained fork of the original Tabliss, with merged community contributions and ongoing updates.

    Simon

    927 users