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

Log in

6,698 extensions found in Web Development

Filter results
Search results
  • SVG Gobbler

    SVG Gobbler

    Open source browser extension for finding, editing, exporting, optimizing, and managing SVG content.

    Ross Moody

    4,789 users

  • Ui.Vision

    Ui.Vision

    Open-source Ui.Vision is RPA software for task & test automation. It is 3 tools in 1: Visual BROWSER automation with Selenium IDE import/export, 2: Visual DESKTOP automation and 3: (optional) Prompting with integrated Anthropic Claude Computer Use

    Ui.Vision Open-Source RPA Software

    4,780 users

  • YouTube Download Button

    YouTube Download Button

    Free YouTube Download Button allows you to save YouTube video and audio files just in 1 click

    A Max

    4,677 users

  • Elasticvue

    Elasticvue

    Elasticvue is a free and simple elasticsearch gui for your browser

    Carsten König

    4,666 users

  • simple-modify-headers

    simple-modify-headers

    The extension rewrite the header (request or response) based on a rules table. It 's possible to add, modify or remove header fields for a choosen url pattern. It's possible to import/export the configuration

    Didierfred

    4,593 users

  • Random User-Agent (Switcher)

    Random User-Agent (Switcher)

    Automatically change the user agent after a specified period of time to a randomly selected one, thus hiding your real user agent

    Paramtamtam

    4,531 users

  • Salesforce inspector

    Salesforce inspector

    Productivity tools for Salesforce.com administrators and developers to inspect data and metadata.

    Jesper Kristensen

    4,525 users

  • FlashPlayer - SWF to HTML

    FlashPlayer - SWF to HTML

    Open SWF links of Adobe Animate (Flash) in a pure sandboxed JavaScript emulator

    Chandler Stimson

    4,504 users

  • CSSViewer

    CSSViewer

    A simple yet powerful CSS property viewer. For Firefox Quantum

    Mohsen Khanpour

    4,348 users

  • Pomodoro clock extension

    Pomodoro clock extension

    A simple pomodoro clock to hack your productivity.

    macmorning

    4,346 users

  • WebRTC Control

    WebRTC Control

    Have control over WebRTC (disable or enable) and protect your IP address.

    Bernard

    4,294 users

  • Always active Window (Always Visible)

    Always active Window (Always Visible)

    Pretend that all browser windows are active by spoofing the visibility state event

    Brian

    4,270 users

  • retire.js

    retire.js

    Scanning website for vulnerable js libraries.

    Francesco De Stefano

    4,244 users

  • ChroPath

    ChroPath

    ChroPath helps to generate and validate selectors like relative xpath, cssSelector etc with iframe support.

    AutonomIQ

    4,227 users

  • Page Screenshot

    Page Screenshot

    Take a screenshot from the entire website with just one click.

    Bernard

    4,170 users

  • SelectorsHub

    SelectorsHub

    xPath plugin to generate, write and verify xpath & cssSelector. It auto generates all kinds of relative xpath, axes xpath, index xpath, css selector.

    Sanjay Kumar | SelectorsHub Founder

    4,109 users

  • ChatGPT Sidebar for Fire Fox

    ChatGPT Sidebar for Fire Fox

    Use ChatGPT in sidebar. You won't need to waste time switching between ChatGPT and other tabs.

    HamzaDev

    4,087 users

  • Open With

    Open With

    Quickly test out your web pages in Chrome, Edge, Safari, or Opera. Open With opens the current page in your other browsers with just two clicks.

    Geoff Lankow

    4,052 users

  • GoPlay Extension

    GoPlay Extension

    Allow Playback for GoPlay Server 2, Server 5, and Server 8.

    Arms

    4,044 users

  • WCAG Contrast checker

    WCAG Contrast checker

    Checks for compliance with the contrast levels of foreground and background colors combination based on the requirements of WCAG 2.2

    Rumoroso

    3,936 users

  • ColorFish 🐠 Color Picker

    ColorFish 🐠 Color Picker

    Open-Source Color Picker for Websites and Desktop Apps. With ColorFish you can get a color reading from any point in your browser and desktop. ColorFish is the only eyedropper browser extension with desktop color selection support.

    Ui.Vision Open-Source RPA Software

    3,934 users

  • RusVPN - Free VPN

    RusVPN - Free VPN

    RusVPN - Free VPN Proxy service

    Iron Media

    3,887 users

  • Language Switch

    Language Switch

    Allows to change the language identifier sent to webservers to whatever language you need.

    Manuel Reimer

    3,873 users

  • Open in Tor Browser

    Open in Tor Browser

    Open current page or link in tor browser for better privacy

    Andy Portmen

    3,860 users

  • Ahrefs SEO Toolbar: On-Page and SERP Tools

    Ahrefs SEO Toolbar: On-Page and SERP Tools

    On-page SEO report, broken link checker, redirect tracer, and country changer for SERP in one add-on. If you have an active account at ahrefs.com, you will also get instant access to Page, Domain, and keyword metrics via your Ahrefs account.

    Ahrefs

    3,817 users