JavaScript & Colors

by harrison3001

70 Add-ons in this Collection

Measurer by Jitendra Joshi

Rated 4 out of 5 stars 4 reviews

1,282 users

Measurer allows to measure dimensions of the objects on html page. Press down shift for multiple measurements.

jQuery by Alrond

Rated 4 out of 5 stars 7 reviews

2,889 users

jQuery and jQuery UI embedded in browser

Test Pilot by Mozilla Labs, Gregg Lind, others

Rated 4 out of 5 stars 71 reviews

756,112 users

Help us make Firefox better by joining our structured user studies! No need to download this add-on if you are running Firefox 4 beta, - you are already a part of the team!

Console² by Philip Chee, zeniko

Rated 5 out of 5 stars 47 reviews

10,484 users

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

Fangs Screen Reader Emulator by Peter Krantz

Rated 5 out of 5 stars 10 reviews

4,498 users

Fangs renders a text version of a web page similar to how a screen reader would read it. The ambition is to help developers understand how an assistive device would present a website and thereby increase chances of finding accessibility issues early.

Flashbug by O-Minds

Rated 3 out of 5 stars 4 reviews

6,642 users

This extension has been discontinued and merged into FlashFirebug.

Developer Assistant by Ted Mielczarek, Gavin Sharp, others

Rated 4 out of 5 stars 46 reviews

3,188 users

A suite of tools for developers.

FlashInspector by tamt

Rated 4 out of 5 stars 6 reviews

1,043 users

Inspect flash(swf)'s DisplayObject with mouse. Overview the swf's DisplayObject list. Set the inspect filter class when use mouse inspect.

following @itamt on twitter for the updates

JavaScript Terminal by Paul Rouget

Download Now

Experimental

Rated 4 out of 5 stars 5 reviews

3,594 users

JavaScript Terminal for Firefox.

InspectThis by Laurens Mackay

Rated 5 out of 5 stars 9 reviews

2,689 users

Inspect the current element with the DOM Inspector.

Good Website Inspector by Stefan Seifarth

Rated 5 out of 5 stars 1 review

2,524 users

Good Website Inspector is an extended ruleset for YSLOW, a Firefox AddOn, to check source codes of HTML pages to get easy and fast hints to optimize the current page.

SourceEditor by iDo

Rated 3 out of 5 stars 20 reviews

1,645 users

View and Edit source of HTML element...

FireRainbow by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 44 reviews

6,700 users

Javascript syntax highlighting for Firebug

XML Viewer by Sarraju Varma Sagi

Rated 1 out of 5 stars 2 reviews

2,191 users

View xml data in textareas, in readable format.

Scriptify by Kris Maglione

Rated 3 out of 5 stars 22 reviews

1,442 users

Create and manage add-ons made from Greasemonkey and Scriptish user scripts
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