Actually, there are many times one prefers GIFs over JPGs:
- A lot of inlines are *smaller* as GIF than as JPG. Almost all icons are.
In fact, many thumbnails can be reduced to GIFs smaller than 1k. You
hardly can make a JPG (any JPG) that small. In fact, when the corresponding
JPG is smaller than the GIF, you should wonder whether the image might
be too big to inline it.
- For images with sharp edges (like in logo's and other computer generated
stuff) JPGs look bad, creating `ghostedges'. (Read the JPG faq.)
- Not all browser can handle inline JPGs.
- You cannot have a transparant JPGs.
- You cannot have interlaced JPGs.