Web Safe GIF Colors, Dithering, Dithering is somewhate
undesirable in web page GIF files. The way that GIF files are
coded, dithering creates much larger GIF files than simiilar
non-dithered ones. Dithered files are therefore slower to load.
If text using a small font is displayed over a dithered
background, it can be a lot harder to read, too. For clean, fast
loading web pages, all GIF files should be made up only of the
216 basic colors. There are still enough people connecting with
slow telephone dialups to make this a consideration, but it is
much less important than it used to be. Note that GIF and JPEG
files use completely different coding schemes, and are used for
different types of graphics. You don't need to be concerned
about how many colors are used with JPEG files. See Creating
Small, Fast-Loading Graphics for Web Pages for a further
explanation. Aliasing and Anti-Aliasing. Pictures on screen are
made up of square pixels. When a diagonal or curved line is
represented, what may look like a smooth l