Generally we print 4×6 photos. I like to also print photos in various sizes (4×6, 5×7, 8×10 etc.). Having different sizes of photos adds a nice variation to your album and some photos deserve a bigger print! Some photos may be cropped down to 3×3. Cropping photos allows for more photos to be designed into a layout/page. At my discretion, I will crop photos,I do not crop/trim more than necessary because photo backgrounds are important. If you do not want a specific photo cut, please tell me! Each 12 x12 page can have 3-5 photos on it. Sometimes 1 8×10!