ZIP File

This page contains information on the ZIP file extension (Zipped File), a popular compressed file format

File extension .zip
Category Compressed File
Description The .zip file extension is the most well known file type related to compressed and archived files. First released in 1989, the format is still widely used and is built into Microsoft Windows releases since 1998. It is also supported by Apple's OSX operating system. The ZIP format supports compression via several different techniques and even supports simply archiving of files without compression. Despite being 20 years old, the ZIP format looks set to continue to thrive whilst bandwidth and storage remain relatively costly.
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Technical Details The compression techniques used to create a .zip file do so by compressing each file individually. This has the advantage of potentially using different appropriate compression techniques for each file within the archive, however under normal circumstances it limits the potential compression capability. Although the ZIP format allows for up to 10 different types of compression to be chosen, the DEFLATE method is the most common. DEFLATE is based on Huffman coding.
Associated programs StuffIt
WinRAR
Winzip
Developed by PKWARE
MIME type application/zip
application/x-zip
application/x-zip-compressed
application/octet-stream
application/x-compress
application/x-compressed
multipart/x-zip
Useful links More Information on ZIP
Zip Format Specification
RAR to ZIP
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Using Zamzar it is possible to convert ZIP files to a variety of other formats

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