Convert PKPASS to JPEG

No know  way how to directly convert .pkpass files JPEG format exists. Nevertheless, services based on Apple Wallet (formerly Apple Passbook) usually provide users with a .pdf file in the confirmation e-mail (when you make the purchase), as well as the possibility to print additional PDF ticket from the users account.

PKPASS is pretty much just a renamed ZIP archive, which means that if you rename it to .zip,  you can (in Windows) view contents of the file and also most likely find an image in PNG format within. Just keep in mind that this image is typically thumbnail size only and meant for previewing purposes, so not of great quality.