LI Developer Collection

by chafikb

20 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,833 reviews

2,019,477 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...

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 1,001 reviews

1,197,843 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 359 reviews

266,673 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Web Developer by chrispederick

Rated 5 out of 5 stars 245 reviews

443,902 users

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

Flagfox by Dave G

Rated 5 out of 5 stars 657 reviews

470,361 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,571 reviews

302,718 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

Password Exporter by Justin Scott (fligtar), Jorge Villalobos

Rated 4 out of 5 stars 351 reviews

191,834 users

This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 309 reviews

249,052 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 356 reviews

131,494 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

YSlow by YSlow

Rated 3 out of 5 stars 212 reviews

75,140 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.

Html Validator by Marc Gueury

Rated 4 out of 5 stars 215 reviews

48,669 users

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
http://users.skynet.be/mgueury/mozilla

CodeBurner for Firebug by SitePoint

Rated 3 out of 5 stars 34 reviews

25,507 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 106 reviews

11,997 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.

View Source Chart by Jennifer Madden

Rated 5 out of 5 stars 110 reviews

11,704 users

Inspect the DOM at lightning speed.

Download Statusbar by C.J.

Download Now

Experimental

Rated 4 out of 5 stars 1,459 reviews

276,308 users

View and manage downloads from a tidy statusbar - without the download window getting in the way of your web browsing.

Thanks Tekzilla for your awesome review! Click here to see their video: http://youtu.be/BUDqWrJ-Vao
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