JPG vs GIF A comprehensive article on the differences between the file formats. http://www.webwitchery.com/articles/format/

Graphics Interchange Format Specifications Specifications to various graphics formats, including GIF, JPG, DWG, PCX and several others, from Edinburgh University. http://www.dcs.ed.ac.uk/home/mxr/gfx/2d-hi.html

SVF specification The Simple Vector Format, or SVF, is a vector graphics format which supports hyperlinks and layer information. It was jointly developed by SoftSource and NCSA to provide a useful 2-D vector format for use on the World Wide Web. The specification is freely available for anyone to use. http://www.softsource.com/svf/spec.html