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12,557 extensions found in Appearance

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  • Change Case

    Change Case

    Let you UPPERCASE, lowercase or tOGGLE any selection of text in an input or textarea field by choosing a Change Case item in your context menu.

    Janghou

    1,370 users

  • Let's get color blind

    Let's get color blind

    Simulates information a color blind person receives and/or adds a daltonization filter. This addon can be used for testing a website accessibility for the color blind and / or to educate (yourself) on the topic of color blindness.

    Nullbrains

    1,358 users

  • WindowSizer

    WindowSizer

    Quickly resize the window to one of your favorite sizes

    Dr. Cheap

    1,357 users

  • Click to Remove Element

    Click to Remove Element

    Remove annoying elements with a single click

    blade.sk

    1,356 users

  • Image Block X

    Image Block X

    Image Block X gives you a simple button to change whether or not to load images. Click it once to stop Firefox from loading images, and click it again to allow images again. It's that simple!

    Christian Kuhl

    1,356 users

  • notion-enhancer

    notion-enhancer

    an enhancer/customiser for the all-in-one productivity workspace notion.so

    dragonwocky

    1,350 users

  • Tab Count Icon

    Tab Count Icon

    A simple tab counter. Shows number of open tabs.

    lllusion3418

    1,342 users

  • Fullscreen Plus

    Fullscreen Plus

    Full screen websites without address/tabs bar. Use Ctrl+Shift+F to enter Fullscreen

    Trishul

    1,324 users

  • Popup ALT Attribute

    Popup ALT Attribute

    Popups alternate texts of images or others like NetscapeCommunicator(Navigator) 4.x.

    Piro (piro_or)

    1,321 users

  • Tab Sidebar

    Tab Sidebar

    Adds a sidebar with foldable tabs.

    Nobuyuki Honda

    1,319 users

  • Video Recorder

    Video Recorder

    Easily record video & audio from your computer's camera

    moris

    1,313 users

  • Default Zoom

    Default Zoom

    Set default zoom level for Firefox.

    Jamie Nguyen

    1,298 users

  • Furigana

    Furigana

    A web extension, Auto insert furigana (phonetic characters) on Japanese kanji.

    EYHN

    1,296 users

  • LibrusPro

    LibrusPro

    Browser extension for the Polish Librus e-diary, introducing a dark theme, displaying grade point averages despite being disabled by the School Administrator, allowing to add custom events in the schedule and some minor improvements to its features.

    Maks Kowalski

    1,282 users

  • Firelux

    Firelux

    Reduces the color temperature of the browser by adding a filter on web pages.

    ValentinG_

    1,280 users

  • Enable Right Click

    Enable Right Click

    Enable Right Click on restricted websites.

    Allow Copy & Right Click

    1,273 users

  • Duplicate Tab

    Duplicate Tab

    Duplicates the current tab from keyboard shortcuts or when you click the icon Source, issues: https://github.com/Skeletonxf/duplicate-tab/

    Skeletonxf

    1,270 users

  • Web Edit

    Web Edit

    Easily edit websites temporarily with a click of a button.

    Ryan Luu

    1,268 users

  • FontARA Font Changer ( for all sites )

    FontARA Font Changer ( for all sites )

    ✨ FontARA - The ultimate font changer for Persian, Arabic, Kurdish & Dari websites with more languages coming soon! 🚀 ----- ✨ فونت‌آرا - تغییردهنده حرفه‌ای فونت برای متون فارسی، عربی، کردی و دری - به زودی برای همه زبان‌ها! 🚀

    Mostafa Alahyari (@mimalef70)

    1,264 users

  • Telephone Number Detection

    Telephone Number Detection

    Automatically convert phone numbers into clickable links, compatible with many telephony applications.

    CTI-Telephony

    1,261 users

  • Cookies

    Cookies

    Turn on/off global browser cookies through the tap of a button. Note: Requires Firefox 59.0+) Nightly users please use Beta/Pre-release version.

    Happy-Ferret

    1,259 users

  • Super History & Cache Cleaner

    Super History & Cache Cleaner

    Clear your browser history, cache and cookies on a selected interval in just one click!

    Alexey Kuznetsov

    1,252 users

  • HMO - Hide "Members-Only" YouTube videos

    HMO - Hide "Members-Only" YouTube videos

    Lightweight HMO addon for Firefox! Less than half the size of the Chromium addon! Hides "members-only"-tagged videos on YouTube if they are on a ".../videos" URL page. Ability to switch between remove entirely or only "hide" (black voids)!

    Dan

    1,242 users

  • TubeMod

    TubeMod

    TubeMod allows you to customize YouTube's UI to your preferences, by keeping you focused on what matters!

    Pedro Gregório

    1,242 users

  • Open With Google Chrome

    Open With Google Chrome

    Open With Google Chrome sends pages from Mozilla Firefox to Google Chrome.

    Baris Derin

    1,236 users