Choose photo categories on the left. Photos will be re-sized and cropped to the size ordered.
Larger photos and those with text - Check the photos carefully at the size you want using the "Preview Larger" available during the ordering process to make sure the photo is as you want... before paying. Ordering all of the sizes of a photo, especially custom prints with text, will allow you to see how it will be cropped at the different sizes and then you can remove the ones you don't want (especially if some of the text is cut off) before paying. The thumbnails shown of some enlarged photos will not show the entire print. Use "Preview Larger" and the correct size and you will see the entire print.
The description will often give the size the enlargement or poster can ideally be printed at in order to not effect the borders. Look for the "X" in the description. For example an 8 inch by 10 inch print will often have 8x10 in the description. If in the Preview the sides aren't cropped as they should be, check the photo's description and crop to the correct size before placing the order. 8x10, 11x14 and 16x20 can typically be interchanged and printed at any of these three sizes.