Extensions by Weekly Downloads

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UnMHT No Restart

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.

Rated 5 out of 5 stars (202)
3,377 weekly downloads

Remote XUL Manager No Restart

Manages the Remote XUL whitelist to allow websites and local files to load XUL content.

Rated 5 out of 5 stars (34)
3,355 weekly downloads

Simple Youtube HTML5 Video Player No Restart

YouTube video player sucks a lot, this basic video player sucks less

NOTE: this extension will be deprecated in favor of "HTML5 Video EveryWhere" extension

Rated 4 out of 5 stars (18)
3,050 weekly downloads

HTML5 YouTube Everywhere No Restart

Get rid of legacy Flash based embedded YouTube videos and replace them with YouTube's HTML5 player. Works even if you have Flash on.

Support for replacing the player on YouTube site is in development.

Rated 4 out of 5 stars (7)
2,795 weekly downloads

Skip adf.ly skip!! No Restart

This addon allows you to skip automatically advertising adf.ly.
Basically when the page loads the site adf.ly with various advertisements, the add-on does go directly to the site you want, but waiting a few seconds.
It is compatible with Android.

Rated 5 out of 5 stars (5)
2,613 weekly downloads

Tap Translate No Restart Featured

Adds a translate button to the long-tap menu.
Github: https://github.com/miraks/Tap-Translate

Rated 4 out of 5 stars (28)
2,484 weekly downloads

Custom User-Agent String No Restart

Set custom User-Agent string. Also available for Firefox on Android.

Rated 3 out of 5 stars (8)
2,442 weekly downloads

CleanQuit (Mobile) No Restart

Clean up the mess and quit! This extension brings back the good old quit button to life as well as the ability to clean what you wish at the same time.

Rated 4 out of 5 stars (34)
2,220 weekly downloads

about:addons-memory No Restart

Adds an about:addons-memory page that details add-on memory usage

Rated 4 out of 5 stars (81)
2,108 weekly downloads

URL Fixer No Restart Featured

URL Fixer fixes common typos in URLs entered in the address bar. It will fix errors like "google.con" or "youtube,com". You have the option of being asked to confirm corrections before they are applied.

Rated 4 out of 5 stars (99)
2,051 weekly downloads

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 (262)
2,015 weekly downloads

Yahoo Mail Hide Ad Panel No Restart

Permanently hides the Ads panel on the right side of New Yahoo! Mail, the 'Sponsored' email at the Top, and ads on the Left to give you a full-width Premium email experience for free! The other option, of course is to pay $50 a year to Yahoo! Inc. :)

Rated 5 out of 5 stars (60)
1,915 weekly downloads

NO Google Analytics No Restart

Actively blocks Google Analytics from running on your Firefox, manually stopping the website you visit from tracking you!

Rated 4 out of 5 stars (16)
1,727 weekly downloads

CookiesOK No Restart

CookiesOK aims to automatically accept cookies on websites that are affected by the recent (26-02-2011) EU cookie laws.

Rated 3 out of 5 stars (16)
1,683 weekly downloads

I don't care about cookies No Restart

Get rid of annoying cookie warnings from tens of thousands of 'infected' websites!

Rated 5 out of 5 stars (21)
1,673 weekly downloads

Mobile Password Manager No Restart Featured

View and edit saved passwords on your phone, tablet or desktop.

Rated 4 out of 5 stars (31)
1,624 weekly downloads

Silent Block

Minimum and fast URL blocker by regular expression.

Rated 5 out of 5 stars (17)
1,550 weekly downloads

Restart

"Restart" menu and button, with configurable shortcut key.

Rated 5 out of 5 stars (32)
1,472 weekly downloads

μ Adblock No Restart

An ultra lightweight addon to block ads and kill trackers.

Rated 4 out of 5 stars (15)
1,420 weekly downloads

skyZIP™ acceleration and compression Proxy No Restart

skyZIP browser extension can reduce satellite data usage by using NYNEX proxy servers to optimize webpages. Data savings are at about 50%

Rated 4 out of 5 stars (8)
1,413 weekly downloads