JPEGs are smaller than GIFs and can support millions of colors. Image Types GIF Graphical Interchange Format. File names normally have .gif suffix. Can use up to 256 colors. Compresses files without loss of information.
Compression is best for images with areas of a single color.
JPEG Joint Photographic Experts Group. File names normally have .jpg or .jpeg suffix. Can use millions of colors. Best for photographic or painted images. You can specify amount of file compression.