web development and usability (big viewport)

by deerua

41 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,865 reviews

20,973,464 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 5 out of 5 stars 1,766 reviews

2,403,479 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...

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 485 reviews

1,027,459 users

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

Element Hiding Helper for Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 439 reviews

811,027 users

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

Flashblock by Philip Chee

Rated 4 out of 5 stars 1,142 reviews

789,594 users

Never be annoyed by a Flash animation again! Blocks Flash so it won't get in your way, but if you want to see it, just click on...

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,494 reviews

955,689 users

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Web Developer by chrispederick

Rated 5 out of 5 stars 209 reviews

584,755 users

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

Flagfox by Dave G

Rated 5 out of 5 stars 627 reviews

660,421 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...

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 300 reviews

264,467 users

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

Personas Plus by Mozilla

Rated 3 out of 5 stars 951 reviews

432,793 users

Personas are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite Personas.

IE Tab by PCMan, yuoo2k

IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 328 reviews

153,400 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 186 reviews

111,797 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.

HackBar by Johan Adriaans, Pedro Laguna

Rated 5 out of 5 stars 39 reviews

33,454 users

Simple security audit / Penetration test tool.

SearchPreview by Edward Ackroyd

Rated 4 out of 5 stars 383 reviews

106,243 users

The extension previously known as GooglePreview. Inserts preview images (thumbnails) and popularity ranks of web sites into the Google, Yahoo, Bing and DuckDuckGo search results pages.
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