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# ZIP (file format)

ZIP
The Unarchiver zip.png
File extension:.zip
MIME type:application/zip
Uniform Type Identifier:com.pkware.zip-archive
Magic:PK\003\004 or PK\005\006 (empty archive) (unless a bootstrap script is present)
Developed by:Phil Katz
Type of format:Data compression

The ZIP file format is a popular lossless data compression and archival format created by Phil Katz, founder of PKWARE. A ZIP file contains one or more files that have been compressed, to reduce their file size, or stored as-is. A number of compression algorithms are permitted in zip files but in 2008 only DEFLATE is widely used and supported.

## Usage

ZIP files generally use the file extensions ".zip" or ".ZIP" and the MIME media type application/zip. Some software uses the ZIP file format as a wrapper for a large number of small items in a specific structure. Generally when this is done a different file extension is used.