Best Add-Ons (Extensions and Themes) for Firefox

by MrAli

80 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,189 reviews

18,410,658 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).

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,388 reviews

1,631,490 users

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

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 424 reviews

1,348,285 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.

Web of Trust - WOT by WOT Services

Rated 4 out of 5 stars 1,300 reviews

1,362,734 users

Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs to help you make informed decisions about whether to visit a site or not.

Flagfox by Dave G

Rated 5 out of 5 stars 566 reviews

890,033 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 2,319 reviews

508,036 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!

Bluhell Firewall by Diego Casorran

Rated 5 out of 5 stars 107 reviews

106,995 users

Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

FastestFox - Browse Faster by yongqli

Rated 5 out of 5 stars 377 reviews

289,161 users

Save time by speeding up repetitive tasks. Get faster, parallelized downloads, see definitions, auto-load the next page, improve searching, and more. FastestFox will dramatically enhance your productivity!

Webpage Screenshot in Firefox (♥♥♥♥♥) by susbox

Rated 5 out of 5 stars 374 reviews

275,704 users

FireShot Webpage Screenshots captures webpage screenshot entirely (see demo: http://bit.ly/RlBQMV)

The screenshot can be quickly annotated and:

+ Uploaded
+ Saved as PDF/PNG/GIF/JPEG/BMP
+ Sent to clipboard
+ Printed
+ E-Mailed
+ Exported

Self-Destructing Cookies by Ove

Rated 4 out of 5 stars 225 reviews

144,344 users

Cookies when you need them, not when others need them to track you - gets rid of a site's cookies and LocalStorage as soon as you close its tabs. Protects against trackers and zombie-cookies. Trustworthy services can be whitelisted.

Pocket by Read It Later, Inc

Rated 4 out of 5 stars 870 reviews

302,903 users

When you find something on the web that you want to view later, put it in Pocket. It automatically syncs to your phone, tablet or computer so you can view it at any time, even without an internet connection.

FXChrome by dkgo

A Chrome-like theme for Firefox.

Nightly channel

Evernote Clearly by Evernote

Rated 4 out of 5 stars 141 reviews

121,216 users

Evernote Clearly makes blog posts, articles and webpages clean and easy to read. Save them to Evernote to read anywhere.

YouTube ALL HTML5 by Klemens Schölhorn

Rated 5 out of 5 stars 62 reviews

51,654 users

Play all videos on youtube without flash in your preferred size using only HTML5.

Image Block by Hemant Vats

Rated 4 out of 5 stars 98 reviews

45,289 users

Image Block adds a toggle button that conditionally blocks/allows loading of images on webpages. Blocking images results in faster browsing, especially helpful on handheld devices or slower connections like GSM/GPRS/EDGE dial-up etc.
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