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.
13.763 gebruikers
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12.683 gebruikers
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.
12.270 gebruikers
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)
12.129 gebruikers
Lightning Autofill
The most popular autofill extension, boosting productivity since 2010.
11.718 gebruikers
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)
11.616 gebruikers
Header Editor
Manage browser's requests, include modify the request headers and response headers, redirect requests, cancel requests
11.484 gebruikers
Flag Cookies
A cookie and browser storage data manager on steroids to mark, 'flag', and manage cookies using rulesets.
11.453 gebruikers
Get cookies.txt LOCALLY
Get cookies.txt, NEVER send information outside with open-source
11.183 gebruikers
Mobile simulator - responsive testing tool
Smartphone and tablet simulator on computer with several models to test mobile responsive websites.
10.476 gebruikers
Modify Header Value
Add, modify or remove a header for any request on desired domains.
10.401 gebruikers
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
10.199 gebruikers
axe DevTools® - Web Accessibility Testing
Add accessibility auditing to the Firefox Developer Tools
10.067 gebruikers
IP Address and Domain Information
The Ultimate online investigation tool! See detailed information about every IP Address, Domain Name and Provider.
9.901 gebruikers
Allow CORS: Access-Control-Allow-Origin
Easily add (Access-Control-Allow-Origin: *) rule to the response header.
9.650 gebruikers
