mastergenius web developer addons

by mastergenius

19 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,770 reviews

2,294,207 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 960 reviews

1,244,211 users

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

Web Developer by chrispederick

Rated 5 out of 5 stars 213 reviews

554,385 users

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

Flagfox by Dave G

Rated 5 out of 5 stars 632 reviews

610,736 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...

SQLite Manager by lazierthanthou

Rated 5 out of 5 stars 34 reviews

195,069 users

Manage any SQLite database on your computer.

Tamper Data by Adam Judson

Rated 4 out of 5 stars 128 reviews

113,906 users

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

FireGestures by Gomita

Rated 4 out of 5 stars 866 reviews

391,700 users

A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 300 reviews

249,595 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 330 reviews

147,017 users

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

JavaScript Deobfuscator by Wladimir Palant

Rated 4 out of 5 stars 21 reviews

52,851 users

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

YSlow by YSlow

Rated 3 out of 5 stars 189 reviews

105,314 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.

Tree Style Tab by Piro (piro_or)

Download Now

Experimental

Rated 4 out of 5 stars 1,169 reviews

96,940 users

Show tabs like a tree.

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 Firefox 23+, you need 0.958 (under review)
http://users.skynet.be/mgueury/mozilla

Extended Statusbar by Strahinja Kustudić

Rated 4 out of 5 stars 249 reviews

49,586 users

A Statusbar with speed, percentage, time and loaded size (similar to Opera's one)

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 28 reviews

22,802 users

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