Most Popular Extensions

Subscribe

Thumbnail Zoom Plus Featured

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.

Rated 5 out of 5 stars (292)
128,560 users

New Tab Homepage

A very simple tabbed browsing extension that loads your homepage when you open a new tab. If you have multiple homepages, the first is chosen.

Rated 4 out of 5 stars (330)
128,556 users

Fasterfox

The One; The Original Fasterfox Gives performance & network tweaks for Firefox. Fasterfox makes your browsing so much faster!
Make your Sites Faster than a Fox with Fasterfox for FireFox!

Rated 4 out of 5 stars (90)
128,393 users

SkipScreen -- download helper, now for sale...

We’re sorry to say we can’t maintain Skipscreen anymore. We’d love to see someone carry on with it. If you’d like to buy Skipscreen, or otherwise find it a good home, please contact us at admin@worcesterllc.com.

Rated 4 out of 5 stars (630)
133,731 users

MEGA extension

The MEGA Firefox extension gives vastly improved download performance. Note: This extension hosted here is out of date. Please download the latest version hosted from our site here.

Rated 4 out of 5 stars (130)
128,182 users

PDF Download

Use PDF Download to do whatever you like with PDF files on the Web. Regain control and eliminate browser problems, view PDFs directly in Firefox as HTML, and use the all-new Web-to-PDF toolbar to save and share Web pages as high-quality PDF files.

Rated 2 out of 5 stars (680)
133,996 users

PDF Viewer No Restart

PDF.js brings Portable Document Format (PDF) reading capabilities to your browser using web standard technologies.

Please report issues to: https://github.com/mozilla/pdf.js/issues

Rated 4 out of 5 stars (265)
125,474 users

Gmail Manager

The original Gmail notifier for multiple accounts. Allows you to receive new mail notifications along with viewing account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets.

Rated 4 out of 5 stars (1,341)
131,358 users

Memory Fox

Attempting to reduce both Browser and Flash RAM Memory usage. Memory Fox will promote the increase of available RAM memories for other application processes. Hopefully, fostering any attempts of Memory Recovery and Retention.

Rated 4 out of 5 stars (324)
124,049 users

Youtube and more – Easy Video Downloader No Restart

Download and save videos playing on a website like youtube to your hard disk

Rated 4 out of 5 stars (438)
121,899 users

Updated Ad Blocker for Firefox 11+

It blocks ads on the web pages you visit including Youtube, Hulu, TwitchTV/JustinTV, most Major News Sites(cnn/fox/nbc/msnbc) and many more. Ads from services like Google AdSense Yahoo DoubleClick It also blocks the GoogleAnalytics tracking script.

Rated 3 out of 5 stars (49)
120,788 users

TinEye Reverse Image Search

TinEye is a reverse image search engine. The plugin adds a context menu item that allows you to search for an image to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions.

Rated 4 out of 5 stars (175)
118,428 users

Evernote Clearly Featured

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

Rated 4 out of 5 stars (176)
123,166 users

Download Manager (S3) Featured

View and manage downloads from a tidy statusbar

This is a new life in Firefox 26+ for old well-known addon Download Statusbar

New Features: Replace Downloads Library page.
Now you have full control of your downloads history!

Rated 5 out of 5 stars (242)
117,211 users

YSlow

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

Rated 3 out of 5 stars (189)
115,905 users

StumbleUpon

StumbleUpon is the easiest way to discover new and interesting photos, videos, web pages and more, recommended by a community of experts. Tell us what you are interested in and we recommend page after page of amazing stuff you’d never expect to see.

Rated 4 out of 5 stars (214)
118,732 users

Tamper Data

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

Rated 4 out of 5 stars (128)
121,877 users

ImgLikeOpera

ImgLikeOpera allows load only the images that you want in Firefox browser. This extension is very useful for non broadband users...

Rated 4 out of 5 stars (351)
113,569 users

Cookies Manager+

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 4 out of 5 stars (72)
112,386 users

BestVideoDownloader 2 - YouTube Downloader MP3 MP4 No Restart

Direct YouTube downloads MP3 M4A AAC and HD MP4, FLV, 3GP. With just one mouse click! With the click off an mouse button! Super fast downloads right from the Youtube video page you are viewing.

Rated 3 out of 5 stars (27)
112,338 users