Just tried it with a small Upload and it works! Nice! Thanks very much!

Needed a bit to figure out, how uploading is done, did it by copy & paste now. There are Upload and Download buttons at the top, but they seem to have no function (yet)?

Edit: Ah, i guess, these are no buttons, this is a preparation to show the speed...

Edit2: Idea for a new feature: compress / uncompress would be very cool