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View formatted source (format source extension) Requires Restart

Displays formatted and color-coded source and optional CSS information for each element. ...

Rated 5 out of 5 stars (22)
168 users

Cookies Manager+ Requires Restart

Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them.

Rated 5 out of 5 stars (67)
107,056 users

Web Developer Requires Restart Featured

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

Rated 5 out of 5 stars (246)
494,696 users

5336游戏开服表 Requires Restart

网页游戏开服表提供最新,最权威开服数据.尽享玩游戏一站式便利.上5336游戏开服表,天下页游尽在掌握

Rated 5 out of 5 stars (14)
197 users

UnicodetoHTML Requires Restart

Converts selected unicode text to HTML character codes with right-click.

Rated 5 out of 5 stars (7)
323 users

Link Properties Plus Requires Restart

Provides extended link properties: size of linked file, last modified time, etc.

Rated 5 out of 5 stars (13)
1,904 users

AngScope Requires Restart

Simple Firebug extension that allows you to inspect the AngularJS scope that a DOM element binds to. This is not an official extension by the Angular JS team. It's something I wrote for me and my colleagues, I find it useful and like to share.

Rated 5 out of 5 stars (13)
10,455 users

Execute JS Requires Restart

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...

Rated 5 out of 5 stars (13)
5,346 users

307.to Requires Restart

Why 307? - 307 is a server side temporary redirect code. Used by servers to redirect your web-browser to a new directory or a new web site.http://307.to/is a redirect service used to make tiny URLs for a lot of uses.

You can protect redirections or ...

Rated 5 out of 5 stars (16)
6 users

Transparent standalone images

This add-on renders standalone images on a transparent background, so you can see the image in all its glory!

Rated 5 out of 5 stars (37)
1,320 users

DOM Inspector Requires Restart

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.

Rated 5 out of 5 stars (70)
125,970 users

Behind The *Asterisks* (EladKarako Mod) Requires Restart

Mouse-Over Shows Whats *Behind* The *Asterisks*
Video Review: http://www.youtube.com/watch?v=hifCmVpBflU

Rated 5 out of 5 stars (8)
96 users

pwgen - Password Generator Requires Restart

For Sysadmins / Network Engineers / and why not everybody who needs a quick password generator.. simple, yet efficient.

Rated 5 out of 5 stars (45)
5,666 users

Copy Fixer Requires Restart

Copy the page title and URL using Ctrl-C or Command-C.

Rated 5 out of 5 stars (12)
988 users

Element Inspector

In the DOM Inspector,quickly navigate to the any elements

Rated 5 out of 5 stars (29)
3,728 users

Disable WebRTC

WebRTC leaks your actual IP addresses from behind your VPN, by default.

Rated 5 out of 5 stars (31)
43,312 users

Export Cookies Requires Restart

Exports all cookies in IE manner.
Makes a Netscape standard cookies.txt file.
Very useful for WGET --load-cookies option.

Rated 5 out of 5 stars (31)
8,884 users

HeadingsMap Requires Restart

The extension generates a documentmap or index of any web document structured with headings and/or with sections in HTML 5. It shows the headings structure, the errors in the structure (ie. incorrect levels), and it works as HTML5 Outliner too.

Rated 5 out of 5 stars (16)
4,286 users

JavaScript Deobfuscator

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

Rated 5 out of 5 stars (20)
53,794 users

ColorZilla Requires Restart

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

Rated 5 out of 5 stars (309)
274,871 users