Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
15 752 користувача
Lightning Autofill
The most popular autofill extension, boosting productivity since 2010.
14 714 користувачів
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)
14 623 користувача
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
14 063 користувача
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12 710 користувачів
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.
12 538 користувачів
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)
12 379 користувачів
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
12 058 користувачів
Flag Cookies
A cookie and browser storage data manager on steroids to mark, 'flag', and manage cookies using rulesets.
11 793 користувача
Allow CORS: Access-Control-Allow-Origin
Easily add (Access-Control-Allow-Origin: *) rule to the response header.
11 465 користувачів
Simulateur mobile
Simulateur de smartphone sur ordinateur très réaliste avec plusieurs modèles disponibles pour tester son site mobile.
11 452 користувача
Header Editor
Manage browser's requests, include modify the request headers and response headers, redirect requests, cancel requests
11 256 користувачів
Modify Header Value
Add, modify or remove a header for any request on desired domains.
11 027 користувачів
MobiDevTools
A mobile devtools for debugging web sites and applications with the console, DOM, network info, sources, and more.
10 985 користувачів
IP Address and Domain Information
The Ultimate online investigation tool! See detailed information about every IP Address, Domain Name and Provider.
10 919 користувачів
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
10 366 користувачів
Angular DevTools
Angular DevTools extends Firefox DevTools adding Angular specific debugging and profiling capabilities.
9 708 користувачів
