My Favorite Add-ons

by madvic

24 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,959 reviews

15,728,453 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,063 reviews

1,441,601 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...

Web Developer by chrispederick

Rated 5 out of 5 stars 258 reviews

333,417 users

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

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 371 reviews

182,128 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 362 reviews

96,474 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 221 reviews

50,410 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.

CacheViewer by benki

Rated 4 out of 5 stars 219 reviews

56,541 users

This extenion is GUI Front-end of "about:cache"...

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 28 reviews

13,814 users

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

FirePHP by cadorn

Rated 4 out of 5 stars 50 reviews

28,040 users

FirePHP enables you to log to your Firebug Console using a simple PHP method call.

Not using Firebug 1.9+ on Firefox 8+? See http://firephp.org/

SQL Inject Me by Security Compass

Download Now

Experimental

Rated 4 out of 5 stars 16 reviews

8,923 users

SQL Injection vulnerabilites can cause a lot of damage to a web application. A malicious user can possibly view records, delete records, drop tables or gain access to your server. SQL Inject-Me is Firefox Extension used to test for SQL Injection vuln...

RAMBack by Stuart Parmenter

Rated 3 out of 5 stars 143 reviews

20,544 users

RAMBack will cause Firefox to issue an internal notification to free up memory that is otherwise held for performance purposes. Additional items will be hooked into this notification in the future.

Screengrab by Andy M

Rated 4 out of 5 stars 587 reviews

14,388 users

Screengrab! saves webpages as images... but not for new versions of Firefox.

FF changes too fast and I don't have the time to maintain it anymore. Bugs have developed that I am not in a position to investigate.

Therefore, Screengrab is EOL.

CSS Usage by Teun van Eijsden

Rated 4 out of 5 stars 40 reviews

13,337 users

Firebug extension to view which CSS rules are actually used.

NoDoFollow by Zachary Fox

Rated 4 out of 5 stars 202 reviews

8,001 users

Just a simple extension to highlight links in a page according to nofollow / dofollow status.

Pixel Perfect by Mike Buckley, Lorne Markham, others

Rated 4 out of 5 stars 102 reviews

8,915 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.
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