Why would you suggest a compressed format and not something like bmp, that's uncompressed?

I'm still unclear on why we're conflating legitimate downloads with illegal bootlegs, but we're definitely in agreement about not supporting the criminal.

You can if you want to but since it's being printed on a 4 1/2" diameter surface you're not going to see any difference in quality. JPEGs & Photoshop files are easily e-mailed and everybody can work with them if they require any modifications.