Is downloading YouTube videos legal? What you need to know But first, we'll look at the legal side of downloading to ensure you don't land yourself in trouble. After that, we'll explain how to properly use a website that offers similar features. Here we’ll explain how to use Tampermonkey to download YouTube videos in Chrome. It also works in Edge and Firefox, if you install Tampermonkey in those browsers. One of these scripts, called Local YouTube Downloader, can (as its name suggests) download YouTube videos in Chrome, without redirecting you to another site.