VideoGrabby is a free youtube downloader web app that allows you to download your favorite videos right into your hard drive so that you can watch them later, edit them, transfer them to your mobile device, etc. It also allows you to convert a youtube video into MP3 format and also supports High Quality mode. VideoGrabby was made with simplicity and usability in mind: You don't need to be a guru to know how to download a video on Youtube. This web app should not be used with copyrighted videos.