W3C Overview of Web Graphics Information from the World Wide Web Consortium on format comparisons, integration into HTML and XML. http://www.w3.org/Graphics/

The Graphics File Format Page Specifications for various graphics file formats along with some source code and utilities. http://www.dcs.ed.ac.uk/home/mxr/gfx/

GNU Project - Texinfo Free Software Foundation page on their utilities that generate online help and printed manuals from the same information, called Info. Includes online manual in many formats. http://www.gnu.org/software/texinfo/texinfo.html