Firebug Extensions

by Ashai

28 Add-ons in this Collection

FirePath by Pierre Tholence

Rated 4 out of 5 stars 47 reviews

66,057 users

FirePath is a Firebug extension that adds a development tool to edit, inspect and generate XPath 1.0 expressions, CSS 3 selectors and JQuery selectors (Sizzle selector engine).

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 28 reviews

9,373 users

Finds HTML elements matching chosen CSS selector(s) or XPath expression

YSlow by YSlow

Rated 3 out of 5 stars 211 reviews

24,957 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.

FirePHP by cadorn

Rated 4 out of 5 stars 59 reviews

14,266 users

Log from PHP to a devtools panel.
Collector's Note This is a tool for everyone who doesn't want to use one of the PHP debuggers, but wants more comfort than echo() gives you. You just include a .php-file and can output anything to a log-console with a simple fb($var, 'Label'). There are also a lot of advanced options like redirecting Exceptions or group logging-messages. It saves a great amount of time and eliminates the need of debug-divs in your homepages.

CSS Usage by Teun van Eijsden

Rated 4 out of 5 stars 41 reviews

6,506 users

Firebug extension to view which CSS rules are actually used.

Firecookie by Jan Odvarko

Rated 4 out of 5 stars 57 reviews

1,054 users

Firecookie is an extension for Firebug that makes possible to view and manage cookies in your browser

Firecookie is part of Firebug since Firebug 1.10
Collector's Note Makes editing, creating and deleting cookies as easy as possible. It's one of the more mature Firebug extensions.

CodeBurner for Firebug by SitePoint

Rated 3 out of 5 stars 36 reviews

10,544 users

CodeBurner is a Firefox add-on that integrates with Firebug, to extend it with reference material for HTML and CSS.

Pixel Perfect by Mike Buckley, Lorne Markham, others

Rated 3 out of 5 stars 103 reviews

4,133 users

Pixel Perfect is a Firefox extension that allows web developers and designers to easily overlay a web composition with semi-transparent layers (images). These layers can be consequently used for per pixel comparison between the page and a layer.

FireQuery by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 54 reviews

6,139 users

Firebug plugin for jQuery development

SenSEO by Nico Steiner

Rated 4 out of 5 stars 44 reviews

1,918 users

SenSEO is an extension checking the most important on-page-SEO-criteria and calculating a grade of how good your site fulfills these criteria.

ZK Jet by jumperchen

Rated 4 out of 5 stars 11 reviews

54 users

ZK Jet is used for developing Ajax application without installing servers.

Firepicker by thedarkone2

Rated 5 out of 5 stars 56 reviews

4,839 users

Simple color picker plugin for Firebug.
Collector's Note A color picker which lets you change CSS-color-values with a single click. It has a very nice color picker with live-preview. It surpasses the pretty basic FirePalette by far. Love it.

Validator by Teun van Eijsden

Rated 3 out of 5 stars 13 reviews

754 users

Firebug extension to validate HTML.

FireRainbow by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 42 reviews

1,030 users

Javascript syntax highlighting for Firebug

Flashbug by O-Minds

Rated 3 out of 5 stars 4 reviews

883 users

This extension has been discontinued and merged into FlashFirebug.
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