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Detailed information, specifications, and background of the Graphics Interchange Format.
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Original specification describing the file layout as originated by CompuServe. Also known as Gif87a.
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A 2004 article on the GIF controversy seen from a software developer's perspective. Includes original interviews, a historical perspective, and a detailed bibliography.
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Page prepared in 2003 about a program that converts files from GIF to PNG. The conversion preserves all graphic information, including transparency.
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The US patent covering the LZW compression algorithm used in GIF images.
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Old page from the League for Programming Freedom (LPF) on the Unisys patent controversy.
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