6,698 extensions found in Web Development

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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)
Rated 4.7 out of 5
MyIpHider.com
15,441 users
Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
Rated 3.7 out of 5
Google Lighthouse
15,342 users
Text Link
Allows URI texts written in webpages to be loaded by double clicks.
Rated 4.2 out of 5
Piro (piro_or)
15,022 users
Lightning Autofill
The most popular autofill extension, boosting productivity since 2010.
Rated 3.4 out of 5
tohodo.com
14,791 users
RESTED
A REST client for the rest of us
Rated 4.4 out of 5
Eline H
13,591 users
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
Rated 4.1 out of 5
tlintspr
12,878 users
Assinatura Digital no Navegador
Realize Assinaturas Digitais no navegador.
Rated 3.7 out of 5
BRy Tecnologia
12,831 users
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
Rated 4.5 out of 5
Dennis Schubert
12,372 users
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)
Rated 4.3 out of 5
chee
12,334 users
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
Rated 4.5 out of 5
Lauri Rooden
12,304 users
Flag Cookies
A cookie and browser storage data manager on steroids to mark, 'flag', and manage cookies using rulesets.
Rated 3.9 out of 5
Jan Riechers
11,944 users
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.
Rated 4.4 out of 5
Hussein
11,757 users
Header Editor
Manage browser's requests, include modify the request headers and response headers, redirect requests, cancel requests
Rated 4.7 out of 5
泷涯
11,596 users
Allow CORS: Access-Control-Allow-Origin
Easily add (Access-Control-Allow-Origin: *) rule to the response header.
Rated 3.1 out of 5
Muyor
11,511 users
IP Address and Domain Information
The Ultimate online investigation tool! See detailed information about every IP Address, Domain Name and Provider.
Rated 4.5 out of 5
webdev7
11,096 users
Empty Cache Button
Cache clearing made easy. One click.
Rated 4.5 out of 5
mvm
11,054 users
Modify Header Value
Add, modify or remove a header for any request on desired domains.
Rated 4 out of 5
Milen
11,012 users
Export Cookies
Export cookies to a Netscape format cookies.txt file.
Rated 4.2 out of 5
Rotem Dan
11,003 users
Fonts Ninja
Speed up your design workflow!
Rated 4.7 out of 5
Fonts Ninja
10,917 users
Mobile emulator
Smartphone emulator on computer very realistic with several models to test mobile websites.
Rated 3.9 out of 5
François
10,467 users
ScriptCat
脚本猫,一个可以执行用户脚本的浏览器扩展,万物皆可脚本化,让你的浏览器可以做更多的事情!
Rated 4.7 out of 5
王一之
10,426 users
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
Rated 4.6 out of 5
Richard West
10,422 users
RESTer
A REST client for almost any web service.
Rated 4.8 out of 5
Jan
10,126 users
MobiDevTools
A mobile devtools for debugging web sites and applications with the console, DOM, network info, sources, and more.
Rated 4.4 out of 5
Francesco De Stefano
9,269 users
Save Screenshot
Saves the current page as image file or copies it to clipboard.
Rated 4.5 out of 5
Manuel Reimer
9,238 users