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

Log in

14,406 extensions found in Web Development

Filter results
Search results
  • LoadTabOnSelect

    LoadTabOnSelect

    Load newly-opened background tabs on selection, rather than automatically in the background. This addon uses the WebExtensions API, and therefore fully supports Firefox 57+.

    Aaron Horler

    293 users

  • Respieck - Responsive Tester

    Respieck - Responsive Tester

    Respicek: Your responsive design companion. Seamlessly preview and optimize your creations across devices. Intuitive interface, ensuring pixel-perfect adaptability from smartphones to desktops. The key to effortless responsiveness.

    Sammobadi

    292 users

  • GitHub 中文汉化插件

    GitHub 中文汉化插件

    GitHub 中文汉化插件用于将 GitHub 页面中的菜单、按钮、标题、提示语等界面文本进行本地化为简体中文，提升中文用户的浏览与协作效率。

    MaydayV

    291 users

  • Meta tags inspector

    Meta tags inspector

    Adds a new panel to the developer tools. This panel shows a clear overview of all metatags

    Numer

    290 users

  • Twitch Text Emotes - temotes

    Twitch Text Emotes - temotes

    Save your favorite text phrases ("LULW", "KEKW", emoticons, etc.) directly into the standard Twitch Emotes panel and use them in Twitch chat. Simple and useful.

    AdWars

    290 users

  • Dummy Form Filler

    Dummy Form Filler

    One click to populate HTML forms with dummy data. Works out of the box.

    ptomaszek

    289 users

  • [STG plugin] Open Manage groups

    [STG plugin] Open Manage groups

    Open Manage groups page in Simple Tab Groups extention

    Drive4ik

    288 users

  • Workona Tab Suspender

    Workona Tab Suspender

    Suspend your browser tabs to save memory.

    Workona

    288 users

  • Base64 Encoder and Decoder

    Base64 Encoder and Decoder

    Link Webbie Firefox add on that enables you to encode and decode strings in base64.

    Link Webbie

    287 users

  • superSearchPlus

    superSearchPlus

    superSearchPlus高效收集信息 by 不懂安全的开发

    不懂安全的开发

    285 users

  • CLAUDEZILLA

    CLAUDEZILLA

    Browser automation for Claude Code and terminal AI harnesses. Control Firefox with full DOM access, screenshots, and page analysis. No Chrome, no telemetry.

    Boot Industries

    284 users

  • Full Screen Multiple Monitor

    Full Screen Multiple Monitor

    This addons support to make automatically fullscreen at the startup for modern browser (Quantum version). This addons purposed for dashboard or kiosk system and can work for multiple monitor. First, set the homepage and then viola. all set sail!

    Yohanes AI

    283 users

  • SN Utils OnPrem

    SN Utils OnPrem

    ServiceNow Productivity tools. by SN Utils B.V.

    Arnoud Kooi

    283 users

  • Proton Calendar Shortcuts

    Proton Calendar Shortcuts

    Adds customizable keyboard shortcuts (e.g., next, previous, today, ...) to Proton Calendar.

    Simon

    283 users

  • Open Two-Factor Authenticator

    Open Two-Factor Authenticator

    A sync-able open-source two-factor authenticator

    InBasic

    283 users

  • Auto Refresh A

    Auto Refresh A

    Automatically refresh the page every 60 seconds.

    pabloduenas

    281 users

  • MobX Developer Tools

    MobX Developer Tools

    Dev-tools for MobX and React. Use this extension to debug pages containing MobX 3.1.15 or higher (https://mobx.js.org/) For more information, please refer to https://github.com/andykog/mobx-devtools/blob/master/README.md

    Andrew Kogut

    279 users

  • DOMLogger++

    DOMLogger++

    DOMLogger++ allows you to monitor, intercept, and debug JavaScript sinks based on customizable configurations.

    Kévin (Mizu)

    279 users

  • Salesforce Inspector Advanced

    Salesforce Inspector Advanced

    Productivity tools for Salesforce administrators and developers to inspect data and metadata directly from the Salesforce UI.

    Olivier Dufour

    278 users

  • Modify Headers DNR

    Modify Headers DNR

    Modify request and response headers through the DeclarativeNetRequest API

    Brawl

    277 users

  • ChatGPT Export - Markdown & HTML

    ChatGPT Export - Markdown & HTML

    Télécharge le fil de discussion actuel de votre conversation avec ChatGPT au format Markdown ou HTML. -> Solution parfaite pour sauvegarder pour Chat hors ligne

    Grégory Ambroise

    277 users

  • GitHub Gloc

    GitHub Gloc

    Github Gloc - counts locs on GitHub pages

    Kas Elvirov

    277 users

  • Gemini Chat Exporter

    Gemini Chat Exporter

    Export Google Gemini chat history to structured JSON files locally. Features include bulk selection, search/filter, and automatic sidebar syncing. Privacy-focused: all scraping happens on your device.

    Dev

    276 users

  • hektCaptcha: hCaptcha Solver

    hektCaptcha: hCaptcha Solver

    Automatically solve hCaptcha using AI. Locally, with Firefox extension.

    Wikidepia

    275 users

  • Scraper Master - Simple Web Scraping

    Scraper Master - Simple Web Scraping

    Your ultimate companion for effortless web data extraction.

    voxy

    275 users