Extensions by Weekly Downloads

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Theme Font & Size Changer Featured

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.

Rated 5 out of 5 stars (182)
6,038 weekly downloads

Chrome Store Foxified

Enables the Google Chrome Store for Firefox. Point and click to install Chrome extensions straight into Firefox.

Rated 4 out of 5 stars (171)
6,006 weekly downloads

Flashblock Requires Restart

Never be annoyed by a Flash animation again! Blocks Flash so it won't get in your way, but if you want to see it, just click on...

Rated 4 out of 5 stars (1,142)
5,980 weekly downloads

VKontakte.ru Downloader (music/videos/photos @ VK) Requires Restart

Download music, videos and photos from VK.com / vkontakte.ru. One-click download, natural filenames, displaying file size and bitrate for music, downloading HD video, downloading HQ photos. No spam, no usage of your account, no spyware.

Rated 4 out of 5 stars (497)
5,804 weekly downloads

Open in VLC media player Compatible with Firefox 57+

Adds a context menu item to send audio/video streams directly to VLC media player

Rated 4 out of 5 stars (74)
5,769 weekly downloads

Flash Video Player for Facebook™

Flash Video Player for Facebook™ is a powerful tool that will let you choose Flash video player as default Facebook video player.

Rated 5 out of 5 stars (5)
5,726 weekly downloads

HttpRequester Requires Restart

A tool for easily making HTTP requests (GET/PUT/POST/DELETE), viewing the responses, and keeping a history of transactions.

Rated 4 out of 5 stars (66)
5,624 weekly downloads

Multi YouTube mp3

The YouTube mp3 Download Add-on includes a Button on any YouTube Page and allows you to convert the YouTube Video to a mp3 with just one click.

No Limits.
Full Albums possible.
Very Fast.

Rated 4 out of 5 stars (38)
5,608 weekly downloads

JavaScript on-off applet Requires Restart

Applet for JavaScript simple On/Off

Rated 4 out of 5 stars (8)
5,584 weekly downloads

Status-4-Evar Requires Restart

Status bar widgets and progress indicators for Firefox 4+

Rated 5 out of 5 stars (509)
5,572 weekly downloads

Video Downloader Prime Compatible with Firefox 57+ Featured

Easily download most popular video formats.

Rated 4 out of 5 stars (70)
5,549 weekly downloads

Amazon Assistant for Firefox Compatible with Firefox 57+

This is an official Amazon extension for Firefox. Amazon Assistant helps you make better shopping decisions by showing product comparisons at thousands of retail sites. By installing you agree to the Conditions of Use at amazon.com/gp/BIT/TOU.

Rated 4 out of 5 stars (359)
5,498 weekly downloads

convert2mp3.net Online YouTube to MP3 Converter Requires Restart

With this addon you can convert your YouTube, Dailymotion and Clipfish Videos online to MP3, MP4, M4A, AAC, OGG, WMA and 3GP.
It it free, easy and very fast.

update 14.04.2017:
The add-on is now compatible with the new YouTube design.

Rated 5 out of 5 stars (64)
5,371 weekly downloads

DuckDuckGo Plus Featured

DuckDuckGo is the search engine that doesn't track you. This add-on makes DuckDuckGo your default search engine and includes some other useful features.

Rated 4 out of 5 stars (190)
5,311 weekly downloads

Nimbus Screen Capture - editable screenshots

1) Screen capture web pages.
2) Selected regions.
3) Whole browser windows.
4) Slack direct upload (NEW!)
Edit screenshots and save images as local file or Google Drive. Annotate screenshots with different tools. Upload and share!

Rated 4 out of 5 stars (343)
5,268 weekly downloads

Turbo Download Manager Featured

a download manager with multi-threading support

Rated 4 out of 5 stars (92)
5,199 weekly downloads

Private Video Downloader Compatible with Firefox 57+

Download videos from web sites and avoid compromising entries in your browser history.

Rated 4 out of 5 stars (69)
5,190 weekly downloads

ColorZilla Compatible with Firefox 57+

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

Rated 4 out of 5 stars (384)
5,171 weekly downloads

Bluhell Firewall Featured

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

Rated 4 out of 5 stars (445)
5,157 weekly downloads

User Agent Switcher Compatible with Firefox 57+

Easily override the browser's User-Agent string

Rated 4 out of 5 stars (21)
5,117 weekly downloads