ZIP FILE EVOLUTION: .ZIP Filename extension .zip .zipx (newer compression algorithms) Internet media type application/zip[1] Uniform Type Identifier com.pkware.zip-archive Magic number none, though PK\003\004 , PK\005\006 (empty archive), or PK\007\008 (spanned archive) are common. Developed by Phil Katz, PKWARE Initial release 1989 Latest release 6.3.3 / 1 September 2012; 17 months ago Type of format Data compression Extended to JAR (EAR, RAR (Java), WAR) Office Open XML (Microsoft) Open Packaging Conventions OpenDocument (ODF) XPI (Mozilla extensions) Standard(s) APPNOTE from PKWARE .ZIP is an archive file format that supports lossless data compression. 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. The format was originally created in 1989 by Phil Katz, and was first implemented in PKWAREs PKZIP utility,[2] as a replacement for the previous ARC compression format by Thom Henderson. The .ZIP format is now supported by many software utilities other than PKZIP. Microsoft has included built-in .ZIP support (under the name compressed folders) in versions of Microsoft Windows since 1998. Apple has included built-in .ZIP support in Mac OS X 10.3 (via BOMArchiveHelper, now Archive Utility) and later. Most free operating systems have built in support for .ZIP in similar manners to Windows and Mac OS X. .ZIP files generally use the file extensions .zip or .ZIP and the MIME media type application/zip.[1] ZIP is used as a base file format by many programs, usually under a different name. When navigating a file system via a user interface, graphical icons representing .ZIP files often appear as a document or other object prominently featuring a zipper.
Posted on: Sat, 22 Feb 2014 03:15:58 +0000
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