Guardian's Firefox Add-ons

by Guardian.

28 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,991 reviews

23,439,654 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 1,800 reviews

2,704,207 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...

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,626 reviews

1,483,902 users

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

Ghostery by Ghostery

Rated 4 out of 5 stars 1,238 reviews

1,648,298 users

Enjoy a faster, safer and cleaner browsing experience.

LastPass Password Manager by LastPass

Rated 4 out of 5 stars 1,250 reviews

835,269 users

LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 251 reviews

403,723 users

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

Web Developer by chrispederick

Rated 5 out of 5 stars 218 reviews

638,054 users

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

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,549 reviews

994,552 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.

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

Rated 5 out of 5 stars 440 reviews

314,239 users

FireShot makes full web page screenshots. Demo:

Screenshots can be quickly captured and:

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

* OS Windows only

Flagfox by Dave G

Rated 5 out of 5 stars 636 reviews

655,173 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...

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,528 reviews

342,300 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

Webmail Ad Blocker by Jason

Rated 4 out of 5 stars 188 reviews

139,426 users

Expand your email area by blocking and removing ads on the right hand side of the screen when using Gmail, Hotmail, and Yahoo Mail.

The Addon Bar (Restored) by Geek in Training

Rated 5 out of 5 stars 286 reviews

138,417 users

Gives you a place to put all your add-on buttons without over-crowding the navigation bar.

YSlow by YSlow

Rated 3 out of 5 stars 200 reviews

114,787 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. is the official open source website.

FEBE by Chuck_Baker

Rated 4 out of 5 stars 644 reviews

133,239 users

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.
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