#1 Youtube Video and Mp3 Downloader 2.3.1-signed
Scans the YouTube page for all formats, including download to .mp3 on selected videos. Designed to be lightweight and unobtrusive, it runs entirely on the page without contacting any external sites.
This add-on has been preliminarily reviewed by Mozilla. Learn more
This add-on is not compatible with your version of Firefox because of the following: