GIF

Compression Links: GIF
Detailed information, specifications, and background of the Graphics Interchange Format.
http://www.compression-links.info/GIF

The GIF Controversy
A 2004 article on the GIF controversy seen from a software developer's perspective. Includes original interviews, a historical perspective, and a detailed bibliography.
http://cloanto.com/users/mcb/19950127giflzw.html

The gif2png Home Page
Page prepared in 2003 about a program that converts files from GIF to PNG. The conversion preserves all graphic information, including transparency.
http://catb.org/~esr/gif2png/

Graphics Interchange Format
Provides detailed specification of file layout, encoding and decoding algorithm, and color space model for gif89a.
http://256.com/gray/docs/gifspecs/

US4558302 Patent
The US patent covering the LZW compression algorithm used in GIF images.
http://www.delphion.com/details?pn=US04558302__