GIF
stands for Graphics Interchange Format. The GIF uses the 2D raster data type and is encoded in binary. GIF files ordinarily have the .gif extension.
JPEG
A JEPG is a graphic image file produced according to a standard from the Joint Photographic Experts Group, an ISO/IEC group of experts that develops and maintains standards for a suite of compression algorithms for computer image files. JPEGs usually have a .jpg or .jpeg file extension.
Living Documentation
Living documentation is a dynamic system documentation that provides information that is current, accurate and easy to understand. Documents that are written in a natural language format serve as the core of living documentation. Your content experts can review the documentation to ensure that it describes the desired behavior of the system from a logical standpoint.
PNG
is a Portable Network Graphics) is a file format for image compression that was designed to provide a number of improvements over the GIF format. Like a GIF, a PNG file is compressed in lossless fashion (meaning all image information is restored when the file is decompressed during viewing). Files typically have a .png extension.