They may be too big to post. The only way I have figured out how to reduce the size is to drop the photo into Paint and reduce by 50% in both directions until it is a size that the board can take. I think most of the photo editing softwares out there will do that for you, too. Just remember to save your photo with a different name so your original picture isn't affected in case you need the original for something else, like making a hard copy print. You lose detail when you shrink or enlarge with these software programs.