Easy XSS
XSS made Easy. Easy XSS makes it possible for you to text XSS with just 2 mouse clicks.
452 users
Policy Control - JavaScript and Flash blocker
This extension helps you quickly disable and enable different types of resources such as JavaScript, CSS, and Media. The extension can be used to increase privacy as well as saving bandwidth by blocking unwanted contents.
449 users
New Tab Same Group
Opens new tabs in the same group as the active one — right after, at the beginning, or at the end. Supports Firefox’s native tab groups, vertical (sidebar) or horizontal (classic) modes.
448 users
Show Server IP
Show the Server IP without interacting with external Sites. If you are behind a proxy it will only show the IP of the Proxy!
447 users
Majestic Backlink Analyzer
Majestic Backlink Analyzer gives instant insight into the number of backlinks and domains linking to the URL and domain you are currently browsing. Majestic users can drill down to see the links, topics and add them to their Majestic bucket list.
446 users
Easy Screenshot - a Web Clipper
Easy Screenshot is an easy-to-use visual part, the entire page, or a selective screen capturing tool.
441 users
Cookies and HTTP Headers analyser
This extension analyses, according to OWASP guidelines, the cookies and the headers in the active tab.
440 users
LocatorJS
A Firefox extension that allows you to click through from your React app to its code.
439 users
TCCDE-复制、鼠标右键菜单功能复原
1.该扩展只有一个操作按钮（启用或关闭），即可实现一键破解禁止右键、破解禁止选择、破解禁止复制、破解禁止粘贴，启用复制，启用右键，启用选择，启用粘贴等。 2.该扩展没有插入第三方广告，界面简单易用，界面中显示了启用后的作用，轻便易用。
438 users
Cache Cleaner
Modern Browser Addon to easily clean selected cache items for specific sites or the whole browser with a single key press, from the right-click context menu or via the toolbar icon popup. Allows clearing Cache Storage in Firefox for the current site.
437 users
DivMagic
Copy elements from any webpage as reusable web components Copy design from any website Transform elements from any webpage into reusable web component, in CSS or Tailwind CSS. Unleash the power of effortless element conversion with DivMagic
435 users
File Backups
TiddlyWiki html-file saving and backup, using a Tower of Hanoi strategy! Learn more at: https://pmario.github.io/file-backups/ Video: recoreded with V0.2.1 https://youtu.be/KVLtID8nElU which is slightly outdated. But overall info is OK.
426 users
FiddlerFox
Allows you to point Firefox to your fiddler instance if it doesn't refresh the proxy settings after Fiddler has started.
425 users
Tota11y: Accessibility toolkit
Inserts the tota11y JS file from Khan Academy into the current tab so that you can visualize how the current page performs with assistive technologies. All the credit goes to Khan Academy for their amazing script.
424 users
Copy Link Text
The only extension that lets you effortlessly copy link text on both desktop and mobile—via right-click, Alt+C shortcut, or Copy Mode activation.
421 users
Org Capture
A helper for capturing things via org-protocol in emacs: First, set up: http://orgmode.org/worg/org-contrib/org-protocol.html or https://github.com/sprig/org-capture-extension See https://youtu.be/zKDHto-4wsU for example usage
420 users
Wide GitHub
Makes GitHub wide on Mozilla Firefox. Supports GitHub, private Gists, GitHub Enterprise, and custom domains (TLDs).
420 users
JShelter
JShelter controls the APIs provided by the browser. The goal is to improve the privacy and security of the user running the extension.
418 users
