Wikimedia
Wikipedia: Gif (Graphics Interchange Format)
Encyclopedia entry that defines a GIF (Graphics Interchange Format) graphics file and explains how and why it was created. Sections of the article include history, Unisys and LZW patent enforcement, usage, color, alternatives,...
Wikimedia
Wikipedia: Jpeg
Encyclopedia entry that defines a JPEG (Joint Photographic Experts Group) graphics file and explains how and why it was created. Links to related information are available as well.
Wikimedia
Wikipedia: Png
Encyclopedia entry that defines a PNG graphic file and explains how and why it was created. Sections of the article include history and development, technical details, support and usage, alternatives, see also (related information), and...
Wikimedia
Wikipedia: Tiff (Tagged Image File Format)
Encyclopedia entry that defines a Tagged Image File Format (abbreviated TIFF) graphic file and explains how and why it was created. Links to related information are available as well.