Probably did do that at first (10ish years ago makes it a bit of a haze), but it was being served up by a PHP script that was creating the card name dynamically.

I wanted to move it off being tied to a server anyway and since anyone playing this would probably see a lot of cards, it made since to just download it all as one file rather than 52. At the time, it was all the rage to do such things.

Good excuse to refactor I'm sure.