User-Agent Switcher
Easily override the browser's User-Agent string
65.303 người dùng
Allow Right-Click
Re-enable the possibility to use the context menu on sites that overrides it
53.845 người dùng
Cookie Quick Manager
An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.
50.891 người dùng
Redux DevTools
DevTools for Redux with actions history, undo and replay.
48.757 người dùng
Assinatura Digital no Navegador
Realize Assinaturas Digitais no navegador.
41.152 người dùng
Nimbus Screen Capture: Screenshot, Edit, Annotate
★ Used by Several Million users on different platforms ★ 1) Screen capture web pages 2) Selected regions 3) Whole browser window 4) Slack upload Edit screenshots. Save images as local files or Google Drive. Tools for Annotation. Upload and share
37.483 người dùng
Selenium IDE
Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.
37.337 người dùng
WhatFont
A wrapper for Chengyin Liu's WhatFont tool
36.315 người dùng
Disable JavaScript
Adds the ability to disable JavaScript for specific sites or specific tabs. You can customize the default JS state (on or off), the disable behavior (by domain or by tab) and much more.
34.285 người dùng
cookies.txt
Exports all cookies to a Netscape HTTP Cookie File, as used by curl, wget, and youtube-dl, among others.
32.726 người dùng
JavaScript-Java Bridge
A replacement for the Java Plugin so Java Applets without graphics continue to work on browsers that no longer support NPAPI plugins. Java's LiveConnect API is emulated — data & method calls can be exchanged, and Java can manipulate the webpage DOM.
29.909 người dùng
Disable WebRTC
WebRTC leaks your actual IP addresses from behind your VPN, by default.
25.444 người dùng
WAVE Accessibility Extension
Evaluate web accessibility within the Firefox browser. When activated, the WAVE extension injects icons and indicators into your page to give feedback about accessibility and to facilitate manual evaluation.
25.292 người dùng
Stylish - Custom themes for any website
Tạo lại sắc thái của web với Stylish, một trình quản lí style người dùng.
24.712 người dùng
CORS Everywhere
A firefox addon allowing the user to enable CORS everywhere by altering http responses. Report issues to the repository, with enough information to reproduce the problem: https://github.com/spenibus/cors-everywhere-firefox-addon/issues
23.785 người dùng
SAML-tracer
A tool for viewing SAML and WS-Federation messages sent through the browser during single sign-on and single logout.
22.061 người dùng
Colorpick Eyedropper
A simple eye-dropper & color-picker tool allowing you to select color values from webpages. You will need to enable the add-on bar Firefox menu->Options->Add-on Bar OR View->Toolbars->Add-on Bar Then refresh the page.
20.750 người dùng
Font Finder (revived)
An easy-to-use font inspector to get CSS styles of the selected element
20.366 người dùng
JSONView
View JSON documents in the browser.
19.357 người dùng
ImageAssistant Batch Image Downloader
An image extractor for sniffing, analyzing and batch downloading images from web page.
19.045 người dùng
Media Converter and Muxer - Audio Tools
Easy to use video and audio converter and muxer written in WebExtension built on top of the well-known FFmpeg converter
18.832 người dùng
Proxy SwitchyOmega
Manage and switch between multiple proxies quickly & easily.
18.210 người dùng
User-Agent Switcher
Quickly and easily switch between popular user-agent strings.
17.330 người dùng
Xdebug Helper for Firefox
This extension is very useful for PHP developers that are using PHP tools with Xdebug support like PHPStorm, Eclipse with PDT, Netbeans and MacGDBp or any other Xdebug compatible profiling tool like KCacheGrind, WinCacheGrind or Webgrind.
16.464 người dùng
Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
16.418 người dùng