LiveReload - Web extension
Web extension based version of LiveReload. Supports Firefox 57 (Firefox Quantum)
1,757 users
Clockwork
php dev tools integrated to your browser
1,754 users
FireMonkey
Super Lightweight User Script and Style Manager
1,734 users
Dark Night Mode
It is a universal night mode for the entire Internet. It uses a special algorithm to automatically change the colors of the websites you visit into dark mode so that you can browse without straining your eyes, especially at night.
1,714 users
Feature Queries Manager
Manage and toggle CSS on a page behind a @supports Feature Query.
1,698 users
Amadeus Digital DNA Extension
The Amadeus Digital DNA Extension provides end-users the ability to authenticate on some dedicated Amadeus web applications with a second factor.
1,693 users
Clear Site Cookies
Clear the cookies of the current website, with cookie preview and precise cookie selection.
1,691 users
Word Counter
A lite tool for counting characters and words via context-menu
1,690 users
Claude Usage & Fable 5 Limit Tracker - UsageMeter
UsageMeter tracks your AI usage limits across Claude, ChatGPT & Grok. Plus 50+ themes, productivity tools, multi-account management & usage insights.
1,687 users
Enable Selection and Copy
Force enable text selection and copy. (mod by Gary) This is modded from another well-known addon and makes it function on local files also. Nothing else changed.
1,669 users
Broken Link Checker
A SEO tool to find broken (404) and redirected (301, 307, 308) links in all frames
1,667 users
Try XPath
This add-on displays the result of evaluating XPath expression or CSS selector.
1,653 users
SEO Analysis & Website Review by WooRank
Instant SEO analysis and website reviews for SEO, mobile, usability and social media. The freshest data when and where you want it.
1,644 users
Web Edit
Easily edit websites temporarily with a click of a button.
1,631 users
APK Downloader
APK Downloader Direct download apps of the Google apps store without using Google Play.
1,625 users
PixelZoomer
PixelZoomer takes a screenshot of the current website and provides various tools for pixel analysis. You can zoom into websites (up to 3200%), measure distances and pick colors with an eye dropper.
1,621 users
ClaudeCodeBrowser
ClaudeCodeBrowser enables AI-powered browser automation through the Claude Code CLI. It allows Claude to interact with web pages by taking screenshots, clicking elements, typing text, scrolling, and navigating - all controlled via a local MCP server.
1,620 users
dataslayer
Debug and test tag management (Google Tag Manager, Adobe Launch / DTM, Tealium) and analytics (Google Analytics, Adobe Analytics) implementations from within Developer Tools.
1,618 users
Image saver
Save any images in page directly from context menu, this includes svg elements, css background images and direct child images.
1,617 users
Remove Cookies Button
Toolbar button for removing cookies, local storage and session storage from the current tab. The button displays a number of deleted cookies (shown in the screenshot). In case of deletion problems button displays word "Error" and shows notification.
1,605 users
Extended Color Management
Ever wish that Firefox didn't use color management when viewing images or video? Turn it off easily with this add-on.
1,602 users
HackTools
Hacktools, is a web extension facilitating your web application penetration tests, it includes cheat sheets as well as all the tools used during a test such as XSS payloads, Reverse shells to test your web application.
1,598 users
WebSocket Weasel
A Handy Console / Client to Communicate with WebSocket Servers
1,596 users
Free Visio Viewer (Mac, Windows, Linux)
Open your Microsoft Visio files for free
1,596 users
Laboratory (Content Security Policy / CSP Toolkit)
Because good website security shouldn't only be available to mad scientists! Laboratory is a WebExtension that helps you generate a Content Security Policy (CSP) header for your website.
1,591 users