Developer Tools

by robcee

5 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,761 reviews

2,722,204 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...

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 237 reviews

429,568 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 300 reviews

300,909 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

YSlow by YSlow

Rated 3 out of 5 stars 181 reviews

130,420 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.

Profilist by Noitidart

Rated 4 out of 5 stars 22 reviews

1,926 users

Inlays a simple and quick access profile manager into the new panel-based main menu. Designed for the Australis update to Firefox.

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