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

Log in

12,246 extensions found in Web Development

Filter results
Search results
  • Ducky MDN

    Ducky MDN

    This extension helps developers find references quickly using mozilla developer network. Just type in "mdn some term".

    Andrei Petcu

    1 user

  • Geo Flags

    Geo Flags

    Shows server location info for every domain a webpage contacts

    Max P.

  • archive-dl

    archive-dl

    adds metadata xml links to stream_only archive.org pages

    briaguya

    1 user

  • Vaadin Theme Assistant

    Vaadin Theme Assistant

    A utility for theming Vaadin components

    Sascha Ißbrücker

    1 user

  • OneSidebar - GitHub Navigator

    OneSidebar - GitHub Navigator

    The missing navigator of GitHub. No longer having to open too many tabs! Your files, issues, notifications are a single click away!

    Oliver N

    1 user

  • Angular Material version redirect

    Angular Material version redirect

    Automatic redirection of https://material.angular.io/ to a specific version

    Slow Sense

    1 user

  • Color Picker

    Color Picker

    Pick any color on any page with the native browser eyedropper. Save to a local palette. Copy the whole palette as CSS variables or JSON. Requires a Chromium-based browser. Firefox does not ship the EyeDropper API.

    Alanas

    1 user

  • Personalized Start Page

    Personalized Start Page

    Customize your browser’s start page with shortcuts and widgets.

    Reilly

    1 user

  • Header Injector

    Header Injector

    Add custom headers to requests matching user-defined URL patterns.

    Russi

    1 user

  • AI对话工具 - 网页版对话管理插件｜免费

    AI对话工具 - 网页版对话管理插件｜免费

    自动识别并管理 ChatGPT / Claude 对话，支持提问导航、JSON / Markdown 导出、批量归档，轻量免费无需登录。

    ANNOX

    1 user

  • Live Multi Currency Converter

    Live Multi Currency Converter

    Live multi-currency converter with instant updates from public exchange rates.

    Slava

    1 user

  • Tawfiq - The Muslim Extension

    Tawfiq - The Muslim Extension

    Blocks haram and NSFW content to keep Muslims safe online.

    justify

    1 user

  • Game Audio Enhancer

    Game Audio Enhancer

    Enhance in-game sound effects in browser-based games.

    Livia Sims

    1 user

  • Lyric Finder

    Lyric Finder

    A fast and simple lyric finder that helps you find song by lyrics, discover music instantly, and use smart song identifier by lyrics features. This lyric search tool lets you type any phrase and quickly find music by lyrics with accurate song finder.

    Lyric Finder

    1 user

  • SafeSurf Guard

    SafeSurf Guard

    Enhances your online safety by blocking potentially harmful scripts and suspicious content in real time.

    David

    1 user

  • Cookie Blocker

    Cookie Blocker

    Toggle blocking of all cookies with one click.

    erick

  • DeepSeek RTL/LTR Toggle

    DeepSeek RTL/LTR Toggle

    RTL/LTR Toggle For Chat in DeepSeek

    REMOSH

  • Mikins

    Mikins

    Replaces Jenkins logos with Mikins. Configure target sites via the extension popup.

    Broemp

  • TextToBraille

    TextToBraille

    Displays all web texts in visual and audio Braille

    Dr Bates App

    1 user

  • Moonly - js and css injector

    Moonly - js and css injector

    Inject custom JavaScript and CSS into any web page - run scripts manually from the toolbar or automatically by URL match, with a built-in code editor.

    Vladyslav Tkachov

  • rrweb

    rrweb

    The web extension of rrweb which helps to run rrweb on any website out of box

    Yun Feng

    1 user

  • Vantage SEO and GEO Extension

    Vantage SEO and GEO Extension

    Vantage is an SEO and GEO audit toolkit. Score any page for traditional Google visibility and AI search visibility, map headings, generate and check schema, analyze keywords and links, and switch user agents. Fast, private, and built for everyday opt

    Skyfield Digital

  • Auto Requester

    Auto Requester

    Automatically sends HTTP requests to configured endpoints at regular intervals (e.g. to prevent session expiration)

    Julien Bellue

  • Bidi Fixer

    Bidi Fixer

    Automatically⁩ ⁦fixes⁩ ⁦mixed⁩ ⁦Persian⁩/⁦Latin⁩ ⁦text⁩ ⁦direction⁩, ⁦adds⁩ ⁦isolate⁩ ⁦characters⁩, ⁦and⁩ ⁦sets⁩ ⁦auto⁩ ⁦paragraph⁩ ⁦alignment⁩ ⁦for⁩ ⁦better⁩ ⁦readability⁩ ⁦in⁩ ⁦Firefox⁩.

    MOesbr

  • PreConsent: GDPR Auditor

    PreConsent: GDPR Auditor

    Check any website's privacy compliance score instantly.

    PreConsent.io