The filmstrip format is used to import files into animation programs. This is a highly compressed format. This means that once an item has been compressed in JPEG, it won't be identical to the original image. Fair compresses more but discards more. PICT format is widely used in graphics and page layout programs.
Compression significantly decreases file sizes.
You can choose Mac or IBM formats. Compression is good. When you are considering putting an image on the Web you must decide whether to use CompuServe GIF or JPEG formats. JPEGs were developed specifically for photographic type images and are especially useful for compressing images. Select SAVE AS under the FILE menu.