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

Log in

12,151 extensions found in Web Development

Filter results
Search results
  • Azure Tab Icons

    Azure Tab Icons

    Automatic browser tab icons for Azure

    Tom Plant

    21 users

  • Element to LLM

    Element to LLM

    Give AI eyes. One click captures live UI state — Claude, GPT, Gemini act on what they actually see.

    insitu.im

    21 users

  • Request Delayer

    Request Delayer

    Request Delayer is a Firefox add-on designed to intercept and delay web requests based on user-defined URL patterns and delay timings.

    Anas AMEZIANE

    21 users

  • Compare Text

    Compare Text

    This extension allows you to compare / diff text just in your browser! Free and Open Source

    Danil

    21 users

  • ChatGPT Search For FF

    ChatGPT Search For FF

    Change default search engine to ChatGPT search. ChatGPT Search For FF integrates ChatGPT's AI capabilities directly into your browser's search functionality, providing intelligent, conversational responses alongside traditional search results.

    David Mir

    21 users

  • Global Dark Style

    Global Dark Style

    A configure dark theme with exception list to change everything to real dark

    Lunu

    21 users

  • Remove Duplicated Linebreaks from Text Area

    Remove Duplicated Linebreaks from Text Area

    Provides a context menu item to remove duplicated linebreaks, on a text area.

    Piro (piro_or)

    21 users

  • SVG Collector

    SVG Collector

    Collect and display SVGs from the current page.

    Emre Birkan Kervan

    21 users

  • ImageSlim: Image Resizer

    ImageSlim: Image Resizer

    Instantly resize and optimize images in your browser. Save storage space and improve website loading times with just a few clicks.

    Getinfotoyou

    21 users

  • tldr pages

    tldr pages

    Collaborative cheatsheets for console commands (tldr project) now in your Browser! A browser extension for tldr-pages (collaborative cheatsheets for console commands).

    piraces_

    21 users

  • MultiView - Tab Manager

    MultiView - Tab Manager

    Arrange multiple tabs side by side with dark glassmorphism style

    Sumalya Chatterjee

    21 users

  • Org roam Capture

    Org roam Capture

    A helper for capturing things via org-roam-protocol in emacs: First, set up: http://orgmode.org/worg/org-contrib/org-protocol.html

    溪流ya

    21 users

  • Third-party cookies

    Third-party cookies

    Sample extension which demonstrates how to access a preference.

    Pro Brains

    21 users

  • Session Box

    Session Box

    Создание изолированных контейнеров

    UserName

    21 users

  • Microformats Reader

    Microformats Reader

    Displays microformat data from the active page.

    Michael Beaton

    21 users

  • Toggle Cookies

    Toggle Cookies

    Disables or enables cookies

    Manuel Reimer

    21 users

  • Focus for Instagram

    Focus for Instagram

    A simple extension to hide Instagram's Explore and Reels pages for a more focused social media experience.

    jatin

    21 users

  • Persistent Element Zapper

    Persistent Element Zapper

    Remove annoying elements on websites, permanently. Android compatible. No telemetry, all data is kept local.

    OpenAddons

    21 users

  • TableShot

    TableShot

    Select and copy table as rich text, HTML, tab-delimited and CSV.

    Francesco De Stefano

    20 users

  • Set Cookie: No secure - No HttpOnly

    Set Cookie: No secure - No HttpOnly

    Disable 'Secure' & 'HttpOnly' in set-cookie header

    ThomazPom

    20 users

  • Username Generator

    Username Generator

    Generate Username

    Username_Generator

    20 users

  • Markdown Viewer Plus

    Markdown Viewer Plus

    Preview Markdown files directly in the browser with additional useful features.

    Sunwin100 Net

    20 users

  • MDN Language Redirector

    MDN Language Redirector

    Browse MDN in your preferred language.

    Timon van Spronsen

    20 users

  • WebExtension X-Ray

    WebExtension X-Ray

    Right click on addons.mozilla.org and you will see the source code of the extension

    Andrei Petcu

    20 users

  • PQSpy

    PQSpy

    Shows whether the connection was protected with post-quantum encryption. Requires turning on security.tls.enable_kyber and network.http.http3.enable_kyber in about:config.

    Bas Westerbaan

    20 users