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

Log in

13,208 extensions found in Appearance

Filter results
Search results
  • Linkofy

    Linkofy

    Customizable start page with editable, rearrangeable, resizable sections.

    Joseph Bee

    1 user

  • YouTube Anti time waste

    YouTube Anti time waste

    save time from getting distructed by youtube suggestions

    Attire99

    1 user

  • Save My Eyesight

    Save My Eyesight

    An extension to make websites greyscale and swap black and white when required

    fraa1197

    1 user

  • color tab v1

    color tab v1

    Colorizes browser tabs by domain and adds subtle, per-site highlights defined from Markdown configs.

    Krystufek Robin

    1 user

  • Personalized Twitter

    Personalized Twitter

    Allows you to enable/disable certain Twitter features.

    justan oval

    1 user

  • Hodl

    Hodl

    Encourages you to hodl by replacing sell with 'hodl' on matching pages.

    Gui

    1 user

  • YouTube Related Tab Switcher

    YouTube Related Tab Switcher

    Automatically switches to the Related tab on YouTube.

    Tibi Hencz

    1 user

  • YouTube Theme Pro

    YouTube Theme Pro

    New Add-on 2025 - Customize YouTube with themes, dark/light mode, stylish skins, and UI tools. Enhance appearance for sleek, premium YouTube experience.

    Bob.Robinson

    1 user

  • YouTube Profile Pic Blocker

    YouTube Profile Pic Blocker

    Blocks YouTube display pictures (profile photos).

    Ramakanth Dorai

    1 user

  • Duoblock Origin

    Duoblock Origin

    A lightweight adblocker for Duolingo.

    apersongithub

  • Radio Helsinki Volume Control

    Radio Helsinki Volume Control

    Add volume control to radiohelsinki.fi

    aminoffz

    1 user

  • Print Context Menu

    Print Context Menu

    Add a print option to your browser's right-click menu.

    Solis

    1 user

  • Tab Lock

    Tab Lock

    Lock tabs with a password.

    web giai tri Vic88

    1 user

  • MAWed

    MAWed

    Mark YouTube Videos as watched and hide them.

    nyorbee

    1 user

  • Squaresie

    Squaresie

    Removes rounded corners from images on Facebook.

    Kim

    1 user

  • EdgeTab

    EdgeTab

    A fresh, modern and minimal new tab page for your browser.

    BluDood

    1 user

  • Heartify

    Heartify

    Returns hearts back to Spotify!

    momo

    1 user

  • Blocker ON = ALL MoFo Blocked - Z Simple Blocker

    Blocker ON = ALL MoFo Blocked - Z Simple Blocker

    Blocks ALL new tabs and windows and closes them when active. If you're watching online videos and don't want pop-ups or new tabs when clicking, toggle it ON/OFF with one click from your toolbar! It's simple! - Enjoy!

    Mr. Z. - SzikraZ.

    1 user

  • Старый дизайн VKPlay LIVE

    Старый дизайн VKPlay LIVE

    Возвращаем старый дизайн VKPlay LIVE, ведь новый мы не признаем

    АЧОБогиня

    1 user

  • Putlockers-Close-Tabs

    Putlockers-Close-Tabs

    AutoClose dinamically opened Tabs by website scripts

    dev-wien

    1 user

  • YTPLR Minimal Theme

    YTPLR Minimal Theme

    A minimal and flat theme for Youtube Playlist Randomizer (YTPLR).

    Muhaiminul Yeamin

    1 user

  • PronoteMask

    PronoteMask

    Retire automatiquement vos informations personnelles sur votre espace Pronote.

    DrKnaw

    1 user

  • Vintage Youtube

    Vintage Youtube

    Bring the early-2021 UI back to YouTube!

    tonettileonarda

    1 user

  • YouLabels - AI Video Content Detector for YouTube

    YouLabels - AI Video Content Detector for YouTube

    Rate and detect AI-generated video on YouTube

    YouLabels

    1 user

  • Word Count & Reading Time

    Word Count & Reading Time

    Count words/characters for selection or whole page and estimate reading time (adjustable WPM).

    langit88itcom

    1 user