My Favorite Add-ons

by sloprlek

866 Add-ons in this Collection

gContactSync by Josh Geenen

Rated 4 out of 5 stars 217 reviews

80,130 users

Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.

YouTube™ Flash-HTML5 by Allen

Rated 5 out of 5 stars 13 reviews

43,675 users

Play YouTube™ Videos in Flash or HTML5 Player

Download Manager Tweak by squashr1979, andman42

Rated 4 out of 5 stars 428 reviews

62,212 users

Allows the download manager to also open in a tab or sidebar, and adds some optional display changes.

Screengrab (fix version) by Oleksandr

Rated 5 out of 5 stars 291 reviews

136,983 users

Screengrab! saves webpages as images.
0.99 released!
New features: upload to internet

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 20 reviews

52,328 users

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.

Zoom Page by DW-dev

Rated 4 out of 5 stars 168 reviews

75,978 users

Full featured zoom manager with independent page and image zoom modes. Choose from four zoom modes: Default Zoom, Fit-To-Width, Default Zoom + Site Specific or Fit-To-Width + Site Specific. Button style and zoom levels are fully configurable.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 168 reviews

85,678 users

An HTTP analyzer addon for Firefox

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 352 reviews

137,456 users

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

NolimitVPN by Nicolas THIBAUT

Rated 4 out of 5 stars 7 reviews

6,881 users

Anonymous and secure Internet access

Autofill Forms by Sebastian Tschan, Egor Zindy, others

Rated 3 out of 5 stars 408 reviews

62,797 users

Autofill Forms enables you to fill out web forms with one click.

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,418 reviews

183,161 users

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

Print Edit by DW-dev

Rated 5 out of 5 stars 303 reviews

114,327 users

Allows editing of web page content while in Print Preview mode, prior to printing or saving as HTML or PDF. Compacts the layout and removes unwanted content such as adverts, sidebars and blank pages. Any element can be formatted, hidden or deleted.

Thumbnail Zoom Plus by David Adler

Rated 4 out of 5 stars 353 reviews

110,881 users

Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.

Theme Font & Size Changer by Baris Derin, Access Firefox Project

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Mozilla Archive Format, with MHT and Faithful Save by Christopher Ottley, Paolo Amadini

Rated 4 out of 5 stars 310 reviews

157,231 users

— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!
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