Web Development/Testing Addons

by Jayapal Karakala

9 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,799 reviews

2,266,162 users

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

Web Developer by chrispederick

Rated 5 out of 5 stars 218 reviews

540,514 users

The Web Developer extension adds various web developer tools to the browser.

Tamper Data by Adam Judson

Rated 4 out of 5 stars 133 reviews

113,261 users

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 50 reviews

129,404 users

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 163 reviews

94,265 users

An HTTP analyzer addon for Firefox

YSlow by YSlow

Rated 3 out of 5 stars 198 reviews

96,608 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.

Advanced Cookie Manager by Jayapal Karakala

Rated 4 out of 5 stars 30 reviews

38,581 users

A must have tool for Web Developers and Testers to Manage and monitor web cookies.

Features List:
Export / Backup
Import / Restore
Monitor cookies

Available in English, French, Spanish, German and Italian languages.

Html Validator by Marc Gueury

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Online HTML 5 validation, you need 0.962

Status Watch by Wil Clouser (clouserw), Marnes

Rated 4 out of 5 stars 3 reviews

120 users

Alerts you about abnormal HTTP response codes (e.g. 404) to any requests made by Firefox.

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

Recently Viewed