Proxy SwitchyOmega
Manage and switch between multiple proxies quickly & easily.
54.408 gebruikers
Redux DevTools
DevTools for Redux with actions history, undo and replay.
53.587 gebruikers
Ruffle
Zet Flash terug op het web waar het thuishoort.
48.365 gebruikers
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
47.523 gebruikers
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.
43.940 gebruikers
Allow Right-Click
Re-enable the possibility to use the context menu on sites that overrides it
40.861 gebruikers
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.
36.750 gebruikers
Stylish - Custom themes for any website
Pas het uiterlijk van websites en de gebruikersinterface aan.
36.553 gebruikers
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.
34.241 gebruikers
WhatFont
A wrapper for Chengyin Liu's WhatFont tool
33.844 gebruikers
RESTClient, a debugger for RESTful web services.
RESTClient has been completely rewritten for compatible with Firefox 57. Some functions are still missing (OAuth & OAuth 2.0 authentication).
33.351 gebruikers
Disable WebRTC
WebRTC leaks your actual IP addresses from behind your VPN, by default.
29.990 gebruikers
User-Agent Switcher
Quickly and easily switch between popular user-agent strings.
25.739 gebruikers
JSONView
Bekijk JSON-documenten in de browser.
25.232 gebruikers
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
25.126 gebruikers
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
25.033 gebruikers
SAML-tracer
A tool for viewing SAML and WS-Federation messages sent through the browser during single sign-on and single logout.
22.971 gebruikers
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.
22.345 gebruikers
ImageAssistant Batch Image Downloader
An image extractor for sniffing, analyzing and batch downloading images from web page.
21.962 gebruikers
Font Finder (revived)
An easy-to-use font inspector to get CSS styles of the selected element
20.761 gebruikers
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.
20.694 gebruikers
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.
20.652 gebruikers
ModHeader
Add and modify the HTTP request headers and response headers. Use ModHeader to: - Add / modify request and response headers - Add / modify cookies - Multi-profile support - Filtering based on URL, tab, or window - Export and share profiles
19.570 gebruikers
Autofill
A form filler, form recovery, text snippets, and automation tool all in one.
18.409 gebruikers
SeoQuake SEO extension
Accelerate your SEO efforts on the fly. SEOquake is a free plugin for browsers that provides you with key SEO metrics for a specific page, along with other useful tools such as SEO Audit and many others.
17.490 gebruikers