MatthewWebDev

by matthewxu

32 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,078 reviews

1,919,662 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...

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,635 reviews

2,176,137 users

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 1,022 reviews

1,173,269 users

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

iMacros for Firefox by Ipswitch

Rated 4 out of 5 stars 439 reviews

685,722 users

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 338 reviews

239,695 users

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

SQLite Manager by lazierthanthou

Rated 4 out of 5 stars 67 reviews

191,060 users

Manage any SQLite database on your computer.

Element Hiding Helper for Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 458 reviews

546,278 users

Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

Tamper Data by Adam Judson

Rated 4 out of 5 stars 145 reviews

98,559 users

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

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 172 reviews

133,289 users

View HTTP headers of a page and while browsing.

HackBar by Johan Adriaans, Pedro Laguna

Rated 4 out of 5 stars 45 reviews

32,932 users

Simple security audit / Penetration test tool.

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 49 reviews

105,625 users

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 360 reviews

129,036 users

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

XPath Checker by Brian Slesinsky

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Experimental

Rated 5 out of 5 stars 22 reviews

28,090 users

An interactive editor for XPath expressions.

RefControl by James Abbatiello

Rated 4 out of 5 stars 186 reviews

85,655 users

Control what gets sent as the HTTP Referer on a per-site basis.

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 72 reviews

110,934 users

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.
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