Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
16 345 uživatelů
Lightning Autofill
The most popular autofill extension, boosting productivity since 2010.
14 094 uživatelů
javascript
add javascript that will run on this domain. back up your scripts in the options area (shortcut there by clicking the "JS" letters in the bottom right)
12 677 uživatelů
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
12 641 uživatelů
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12 573 uživatelů
Fake Filler
A form filler that fills all form inputs (textboxes, textareas, radio buttons, dropdowns, etc.) with fake and randomly generated data. The purpose of this extension is to help developers and testers test forms quickly and easily.
12 554 uživatelů
Allow CORS: Access-Control-Allow-Origin
Easily add (Access-Control-Allow-Origin: *) rule to the response header.
12 191 uživatelů
Flag Cookies
A cookie and browser storage data manager on steroids to mark, 'flag', and manage cookies using rulesets.
11 952 uživatelů
Header Editor
Manage browser's requests, include modify the request headers and response headers, redirect requests, cancel requests
11 886 uživatelů
Modify Header Value
Add, modify or remove a header for any request on desired domains.
11 750 uživatelů
Simulateur mobile
Simulateur de smartphone sur ordinateur très réaliste avec plusieurs modèles disponibles pour tester son site mobile.
11 629 uživatelů
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)
11 544 uživatelů
IP Address and Domain Information
The Ultimate online investigation tool! See detailed information about every IP Address, Domain Name and Provider.
11 253 uživatelů
Angular DevTools
Angular DevTools extends Firefox DevTools adding Angular specific debugging and profiling capabilities.
10 105 uživatelů
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
10 068 uživatelů
axe DevTools® - Web Accessibility Testing
Add accessibility auditing to the Firefox Developer Tools
9 746 uživatelů
