My Favorite Add-ons

by Vikram

14 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,905 reviews

2,005,028 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...

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 265 reviews

321,658 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

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

Tamper Data by Adam Judson

Rated 4 out of 5 stars 144 reviews

100,284 users

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

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 314 reviews

248,043 users

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

ERail Plugin for Firefox by eRail

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Experimental

Rated 3 out of 5 stars 7 reviews

50,608 users

This plugin provides faster user experience for Indian Railways trains search on eRail,in

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 49 reviews

109,023 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 358 reviews

130,357 users

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

Modify Headers by Gareth Hunt

Rated 4 out of 5 stars 77 reviews

106,212 users

Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.

Go-Mobile [Speed Boost] by Geek in Training

Rated 5 out of 5 stars 24 reviews

5,749 users

Tell websites your browser is a phone. Very handy for dial-up connections, or just to speed up browsing. Simple, small, and fast. Go Mobile.

Page Ruler by Aurélien MANCA

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Experimental

Rated 2 out of 5 stars 16 reviews

2,404 users

A lightweight ruler to measure web page elements.

L-Square Responsive Design Inspector by Jason M.

Rated 3 out of 5 stars 4 reviews

2,531 users

Browser pixel rulers to help inspect window widths of adaptive designs. The add-on button acts as a toggle that adds rulers similar to a graphics app to measure the current window resolution.

160by2 by 160by2

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Experimental

Rated 5 out of 5 stars 1 review

257 users

160by2.com browser extension to send FREE messages to anyone across India, right from your browser.

sudoku by Petr Blahoš

Rated 4 out of 5 stars 5 reviews

375 users

This extension lets you generate random SUDOKUs and play them. It also detects SUDOKU and let you play puzzles from various web-pages in a single user interface.

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