Traditional, high quality print resolution is 300dpi (dots per inch). However with the increased quality of today's printers, and taking into account the nature of mobile art, 200dpi is also sufficient for an exceptional print. What this means is that in an ideal world, your print size would be the pixel dimension of your image divided by 200. Here are some examples.
IMAGE SIZE
CALCULATION
PRINT SIZE
1200×1200
1200÷1200=6
6×6
2000×2000
2000÷200=10
10×10
3000×3000
3000÷200=15
15×15
Because we understand that the work you are submitting was made on devices like cell phones, and therefore do not have the same native resolutions of high-end digital equipment, we have built some up-resing assistance into our iPrints submission process. As a result, we are usually able to make an amazing print at any of our custom sizes from an image that is 2000x2000 or larger. Of course the higher the resolution the better.
If your image is lower than 2000x2000 pixels and you would like to make a larger print, you may need to do some additional up-resing. You can take a look at our up-resing tips and try it on your own - or you may submit your image to our iPrint technicians for custom up-resing. If you send us your image, there will be a one time $30 fee per image for the service. If we look at your image and feel it will not up-res well enough to print at your desired size, the $30 fee will be refunded.