You may use them with photo credit for anything you want to use them for. Simply wave the cursor over the image and LEFT click on the "Save Photo" icon... An alternate method to save any of the various web-ready sizes is to click on the enlarged image, select any size of the sizes you see above the image (S,M,L,XL..,O), then RIGHT click on the enlargement to bring up the menu. "Set as Background," for desktop background, "Save Picture As..." for saving the size. Experiment with different sizes until it fills your screen. Any of these images as you see them are "2:3" or "3:2" ratios, and uncropped will make a fine 40"x60" print!