I'm very disappointed with BGG. People there say the proper size is 781x1080 pixels. I got some cards back and that's incorrect. That's too large by some amount as the images disappear off the edges on all sides. Anyone figured out what the proper size really is?
ArtsCow - what size should the cards be?
You can recis the picturs on artscow, I use the templet they have on the gamecrafter. But it is slightly to big so I have to press the -% button 2 or 3 times.
Resolution is relative, they suggested you use such a large resolution for your cards so that they retain a high quality when printed. In order to print the cards the size you want, you have to downsize your card images so that they come out properly. The ratio of 781x1080 is proper, try sizing down the resolution whilst keeping the same ratio in order to get the results you want.
What you want is to determine the dimension of your cards then your resolution. Typical accepted resolution is 300 dpi. Also there is two common card sizes 3.5" x 2.5" (poker, or MtG) and 3.5" x 2.25" (Bridge)
Some people vote more for the poker size as card sleeves are easier to acquire for cards of that size.