Dark Reader
Tryb ciemny dla wszystkich stron internetowych. Zadbaj o swoje oczy, używaj ciemnego motywu przeglądając w dzień i w nocy.
1 295 776 użytkowników
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
55 427 użytkowników
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
775 022 użytkowników
Cookie-Editor
Cookie-Editor lets you efficiently create, edit and delete a cookie for the current tab. Perfect for developing, quickly testing or even manually managing your cookies for your privacy.
128 216 użytkowników
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
127 389 użytkowników
Ruffle - Flash Emulator
Putting Flash back on the web. Designed to be easy to use, this extension will seamlessly enable you to play flash content, with no extra configuration required!
80 104 użytkowników
User-Agent Switcher
Easily override the browser’s User-Agent string
61 050 użytkowników
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.
44 960 użytkowników
WhatFont
A wrapper for Chengyin Liu's WhatFont tool
32 695 użytkowników
Bato Image Auto-Fixer
Detect broken bato.to images and automatically fix them.
32 453 użytkowników
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.
30 859 użytkowników
Disable WebRTC
WebRTC leaks your actual IP addresses from behind your VPN, by default.
21 805 użytkowników
Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
14 574 użytkowników
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12 212 użytkowników
My IP Hider VPN
My IP Hider VPN is number one tool for hiding your IP and unblocking any web site! If your Firefox version is less then 55 please install older My IP Hider VPN from "Version History" (https://goo.gl/7ZQQjZ)
11 853 użytkowników
RESTED
A REST client for the rest of us
11 494 użytkowników
Netmirror Extension
Add, modify or remove a header for any request.
11 326 użytkowników
Save Screenshot
Saves the current page as image file or copies it to clipboard.
10 621 użytkowników
ScriptCat
Everything can be scripted, allowing your browser to do more!
9597 użytkowników
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
9546 użytkowników
Empty Cache Button
Cache clearing made easy. One click.
9307 użytkowników
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
8924 użytkowników
MobiDevTools
A mobile devtools for debugging web sites and applications with the console, DOM, network info, sources, and more.
8176 użytkowników
IPvFoo
Display the server IP address, with a realtime summary of IPv4, IPv6, and HTTPS information across all page elements.
7207 użytkowników