If you want to display still images on the World Wide Web, you have a choice
of using JPEG or GIF; those two formats are by far the most widely supported
by WWW browsers.  (We can hope that PNG will soon become popular enough to
replace GIF on the Web; see http://www.cdrom.com/pub/png/ for PNG info.)
For most images it's pretty obvious which format to choose
(see "[3] When should I use JPEG, and when should I stick with GIF?").
JPEG's ability to trade off file size against image quality is especially
helpful for trimming download times of Web photos.

But there's a good many things to know that are specific to Web design,
and even specific to the currently-most-popular browsers.  This FAQ doesn't
try to cover Web graphics design.  Good basic information can be found at:
	http://www.boutell.com/faq/
	http://www.servtech.com/public/dougg/graphics/index.html
	http://www.webreference.com/dev/graphics/
	http://www.adobe.com/studio/tipstechniques/GIFJPGchart/main.html
	http://ppewww.ph.gla.ac.uk/~flavell/www/palette.html
	http://the-light.com/netcol.html
and here are some sites with more advanced info:
	http://www.inforamp.net/~poynton/Poynton-colour.html
	http://www.photo.net/philg/how-to-scan-photos.html
	http://www.scantips.com/