Zip File Extension
ZIP is a compressed archive file format which was originally created in 1989 by Phil Katz. A .ZIP file may contain one or more files or folders that may have been compressed. The .ZIP file format permits a number of compression algorithms. ZIP utilities allow you to extract single files or a complete directory structure. Now, the .ZIP format is now supported by many software and can run on both Windows and Mac systems.
.zip file extension is use the file extensions ".zip" or ".ZIP" and the MIME media type application/zip. .ZIP is used as a base file format by many programs, usually under a different name. The .ZIP File Format Specification documents the following compression methods: stored (no compression), Shrunk, Reduced (methods 1-4), Imploded, Tokenizing, Deflated, Deflate64, bzip2, LZMA (EFS), WavPack, PPMd. .ZIP supports a simple password-based symmetric encryption system which is documented in the .ZIP specification.