Thread:Buiquangduy/@comment-24164143-20131222144242/@comment-17486224-20131224175746

From what I can tell, the tiny pictures we have now are actually the "High definition" images, according to how the game names its files. The images we see in fullscreen are "Max resolution" and they are only downloaded when you have the card and attempt to view its image in fullscreen.

So, in terms of extracting data without actually having the cards, the 320px × 448px images are the best you can get.