My Favorite Add-ons

by Jack Li

11 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,625 reviews

13,576,181 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).

Video DownloadHelper by mig

Rated 4 out of 5 stars 8,197 reviews

3,526,133 users

The easy way to download and convert Web videos from hundreds of YouTube-like sites.

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,100 reviews

1,322,613 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...

Flagfox by Dave G

Rated 5 out of 5 stars 671 reviews

332,145 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...

Web Developer by chrispederick

Rated 5 out of 5 stars 271 reviews

283,368 users

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

Speed Dial [FVD] - New Tab Page, Sync... by Nimbus Web

Rated 5 out of 5 stars 2,176 reviews

123,792 users

FVD Speed Dial - Speed dial button, online synchronization, new tab start page, bookmark organization, custom backgrounds, custom dials, groups, mobile apps, most-visited dials.

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 384 reviews

162,974 users

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

UnMHT by arai_a

Rated 4 out of 5 stars 243 reviews

79,133 users

UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.

Blue Flow by Sinine

Rated 5 out of 5 stars 37 reviews

0 users

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