Pro Developer

by JamesWilson

37 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,752 reviews

14,189,611 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).

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,845 reviews

937,978 users

The first and only download manager/accelerator built inside Firefox!

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,124 reviews

1,319,758 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 1,200 reviews

876,142 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 459 reviews

181,036 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.

Full Web Page Screenshots (♥♥♥♥♥) by susbox

FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

Web Developer by chrispederick

Rated 5 out of 5 stars 280 reviews

297,864 users

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

Tamper Data by Adam Judson

Rated 4 out of 5 stars 175 reviews

62,382 users

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

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 387 reviews

171,300 users

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

ReloadEvery by Jaap Haitsma

Rated 4 out of 5 stars 715 reviews

98,310 users

Reloads web pages every so many seconds or minutes. The function is accessible via the context menu (menu you get when you right click on a web page) or via tab context menu (right click on the tab)

ColorfulTabs by Shivanand Sharma

Rated 4 out of 5 stars 970 reviews

144,526 users

The first addon you should be installing on a fresh Firefox install. A must have. The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 177 reviews

85,216 users

View HTTP headers of a page and while browsing.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 343 reviews

94,102 users

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

CodeBurner for Firebug by SitePoint

Rated 3 out of 5 stars 35 reviews

16,790 users

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

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 28 reviews

14,142 users

Finds HTML elements matching chosen CSS selector(s) or XPath expression
  1. 1
  2. 2
  3. 3
Results 115 of 37

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections