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
Converts YouTube flash videos to HTML5.
Status bar widgets and progress indicators for Firefox 4+
Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including Protect/Lock/Faviconize/Unload Tab, Reload Every, Select and manipulate multiple tabs simultaneously, Tab Stacking/Coloring, etc.
The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.
Toolbar button that lets you disable and re-enable Flash with just one click.
Add more items to Add-ons Manager context menu.
Personalize Firefox Button in Firefox 4 and change it to your personal and powerful one!
Create your personalized menu to replace Menu Bar in Firefox 3.
This add-on is used to set your YouTube video quality global preference.
E.g.: If you want all your videos on YouTube to play on 480p just set it in the addon and you're on.
Supports all video qualities.
Hide(block) site specific unwanted results of Google Search
Also support Bing Search
Easiest way to Add and Manage Custom User Styles in Firefox.
Add, Edit, enable, disable and delete in-numerous User Style Sheets to redesign the Firefox and the Web.