I know that they are file formats. I have checked every program I have that could possibly be able to save in either format and pasted my picture in and hit save as and checked the file formats I could save in for paint, Mircosoft word, and Imging but found that I couldn't save in those formats. And yes before someone asks I do know how to save in JPEG, I have done it at school (on Macs but never the less...) many times. Computers teacher get very angry at my school if you don't save large pictures in JPEG format.