Tube Sub Export geliştiren: proller14

Adds a download button to the youtube.com/feed/channels page. It exports the listed channels as an XML, in a fashion it used to work in Subscription Manager.
You have to log in to your Google account beforehand, of course.

It's open-source, you can have a look at what's under the hood: github.com/ajohntom/tube-sub-export