Graphics File Formats
Information on over 100 graphics file formats including bitmap, vector, animation and CAD formats.
Graphics for Inclusion in Electronic Documents
Essay on how to produce portable graphics files that can be imported into other documents, especially TeX. The advice is aimed mostly at Linux or similar operating systems which have open-source command-line tools. Also includes guidelines for image producers.
Graphics/fileformats FAQ Index
From the Internet FAQ Archives.
Image File Formats
Listing of image formats and their associated file extensions.
The Graphics File Format Page
Specifications for various graphics file formats along with some source code and utilities.
W3C Overview of Web Graphics
Information from the World Wide Web Consortium on format comparisons, integration into HTML and XML.