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

Log in

17,175 extensions found in Appearance

Filter results
Search results
  • Make America Kittens Again

    Make America Kittens Again

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

    tomroyal.com

    940 users

  • Auto hide next up card for Amazon Prime Video

    Auto hide next up card for Amazon Prime Video

    Hides next up card and other obtrusive elements of Amazon Prime Video.

    ryo-fujinone

    939 users

  • Page Marker

    Page Marker

    Draw on any webpage with markers, highlighters, and text tools. white board is included

    Jiru Gutema

    939 users

  • Debug CSS

    Debug CSS

    Adds outline to all elements on the page to show the culprit element which is changing desired layout hit `Alt+Shift+C ` key to toggle the extension

    Pranay Joshi

    939 users

  • Helperbird: Accessibility & Productivity App

    Helperbird: Accessibility & Productivity App

    Your go-to for advanced reading, writing, and accessibility. Our features include voice typing, dyslexia support, an immersive reader, and a reading mode. Tailored to fit diverse abilities and learning styles, making the web accessible for all.

    Coffee & Fun LLC

    938 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

    930 users

  • Mute Tab

    Mute Tab

    Full control of noisy tabs with keyboard shortcut support

    Balvin

    922 users

  • Improvements for Twitter

    Improvements for Twitter

    Easy Twitter/X full quality image and video downloading with custom filenames, easy copying tweets with VXTwitter or FXTwitter links, sidebar and tweet button hiding, and other quality of life features!

    usy

    921 users

  • PopUp

    PopUp

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

    aqt

    921 users

  • Color Changer

    Color Changer

    Change a page's text, background, and link colors to your liking.

    webextdev

    918 users

  • Sakuga Extended

    Sakuga Extended

    Enjoy a better experience with SAKUGABOORU! Previews on posts, frame control on videos...

    Wevolve Team

    917 users

  • Copy As Plain Text

    Copy As Plain Text

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

    ilGur

    917 users

  • Clipboard Manager

    Clipboard Manager

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

    Muyor

    916 users

  • Simple Gmail Notes

    Simple Gmail Notes

    Add notes to email threads in Gmail.

    Bart Solutions

    912 users

  • Quick JIRA

    Quick JIRA

    Quickly opens the JIRA with the corresponding ticket

    timbru31

    911 users

  • Mo'Kick - Better Kick For Everyone

    Mo'Kick - Better Kick For Everyone

    Better Kick for everyone. Chat Enhancements, Video Enhancements, Advanced Giveaway, Drawing Game, and so many more features to list!

    Sarney

    910 users

  • Study Tools voor Magister

    Study Tools voor Magister

    Study Tools brengt veel verbeteringen aan op Magister, Nederlands grootste elektronische leeromgeving. Kies aangepaste thema's, omzeil vervelende user interfaces en bereken gemakkelijk je cijfers.

    QkeleQ10

    909 users

  • Brightness Slider Per Tab

    Brightness Slider Per Tab

    Adjust brightness per tab. Minimal permissions. Low resource usage.

    Darren

    909 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

    907 users

  • Translator

    Translator

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

    Karl

    907 users

  • YouTube Playlist Search

    YouTube Playlist Search

    Goodbye to manually searching through multiple videos in a large playlist

    SudoTronics

    905 users

  • PX: Viewport Dimensions

    PX: Viewport Dimensions

    Displays the viewport dimensions when a browser window is resized.

    Luke Peters

    902 users

  • Custom UserAgent String

    Custom UserAgent String

    Add a custom useragent string for desired URLs or domains.

    Linder

    900 users

  • Open in Microsoft Edge

    Open in Microsoft Edge

    Opens current tab in Microsoft Edge (by simply adding 'microsoft-edge:' to the URL, no additional native software needed).

    Alphalpha

    889 users

  • Tab counter

    Tab counter

    Displays the number of tabs in the active window.

    WaldiPL

    885 users