MDN Search
To use, type 'mdn' plus your search term into the url bar. Works for JavaScript and CSS reference articles.
180 人のユーザー
rep+
rep+ - Capture, modify, and replay HTTP requests in Firefox DevTools with AI-powered security analysis.
180 人のユーザー
xStyle
Restyle the web with xStyle, a user styles manager. With xStyle you can install themes & skins for many sites and create your own.
180 人のユーザー
Design Mode - Page's Rich Text Editor
Change any webpage into its design mode (edit mode) where you can modify the content and drag images around like a Word Editor
179 人のユーザー
Load Background Tabs on Select
Prevents background tabs from loading until they have been activated
179 人のユーザー
Show YouTube Dislikes and Unlisted Videos
Miss the ability to see dislikes? Want to have a quicker method of seeing unlisted videos or discover new ones? Now you can have all those things for free!
178 人のユーザー
Tamper Data Classic
View and modify HTTP/HTTPS headers and POST data. Modern rewrite of the classic extension.
178 人のユーザー
Mist Extension
Grab Mist org, site and object IDs, jump straight to the matching API page, and manage your User and Org API tokens — all from your Safari toolbar.
178 人のユーザー
Super Auto Clicker Pro
Advanced auto-clicker with CSS selector targeting and cursor follow modes. Features precision timing (10ms minimum), randomized delays, visual feedback, hotkey support, and real-time statistics. Perfect for automation, testing, and repetitive tasks.
177 人のユーザー
Eval Villain
Hook native JavaScript functions before page load to see how a website uses them. Narrow down output based on the appearance of URL and session artifacts, user configured strings/regex, blacklists and more.
176 人のユーザー
ProxyScrape - Proxy Manager
Detect, test, and connect to proxies directly in your browser. Validate lists, switch IPs, and streamline workflows in one click.
176 人のユーザー
Simple JavaScript Injector
This addon creates a small popup that lets you paste some JS code and inject it into the page you are currently seeing.
175 人のユーザー
HackBar For Quantum
HackBar Quantum is a sidebar that helps you with web application security testing. This add-on is a predecessor to the original HackBar that is not compatible with Firefox Quantum. This is still in beta phase, lots of things are yet to come :) .
175 人のユーザー
Canonical
Allows you to quickly navigate to or copy the canonical version of the URL you're on, if available.
175 人のユーザー
New Hackbar
A sitebar that helps pentesters to perform manual web security testing inside their browser. This addon is written in webextension and alternatives to the XUL version of original Hackbar.
174 人のユーザー
