DEFLATE

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|subcat=Compression
 
|subcat=Compression
 
|pronom={{PRONOM|x-cmp/16}}
 
|pronom={{PRONOM|x-cmp/16}}
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|wikidata={{wikidata|Q2712}}
 
|released=~1991
 
|released=~1991
 
}}
 
}}
 
'''Deflate''' (stylized as '''DEFLATE''', '''Deflate''', or '''deflate''') is a widely used lossless compression algorithm based on [[LZ77]] and [[Huffman coding]].
 
'''Deflate''' (stylized as '''DEFLATE''', '''Deflate''', or '''deflate''') is a widely used lossless compression algorithm based on [[LZ77]] and [[Huffman coding]].
  
It was originally developed for use in PKZIP 2.x. For many software implementations that support creation or extraction of [[ZIP]] archive files, DEFLATE is the only compression algorithm supported.
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It was originally developed for use in PKZIP 2.x. For many software implementations that support creation or extraction of [[ZIP]] archive files, Deflate is the only compression algorithm supported.
  
 
There is a popular extension of Deflate known as [[zlib]] format, and the term "Deflate" often turns out to mean zlib. Formats that use Deflate ''without'' zlib include [[ZIP]] and [[gzip]].
 
There is a popular extension of Deflate known as [[zlib]] format, and the term "Deflate" often turns out to mean zlib. Formats that use Deflate ''without'' zlib include [[ZIP]] and [[gzip]].
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== Software ==
 
== Software ==
* Refer to [[zlib#Software]]. Libraries that support zlib often also support the original Deflate format.
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* [https://zlib.net/ zlib]
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* [https://github.com/madler/infgen infgen] - Deflate "disassembler"
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See also [[zlib#Software]], and [[ZIP#Software]].
  
 
== References ==
 
== References ==

Revision as of 14:55, 25 January 2020

File Format
Name DEFLATE
Ontology
PRONOM x-cmp/16
Wikidata ID Q2712
Released ~1991

Deflate (stylized as DEFLATE, Deflate, or deflate) is a widely used lossless compression algorithm based on LZ77 and Huffman coding.

It was originally developed for use in PKZIP 2.x. For many software implementations that support creation or extraction of ZIP archive files, Deflate is the only compression algorithm supported.

There is a popular extension of Deflate known as zlib format, and the term "Deflate" often turns out to mean zlib. Formats that use Deflate without zlib include ZIP and gzip.

The term Inflate is sometimes used in conjunction with decompressing this format.

See also

Software

See also zlib#Software, and ZIP#Software.

References

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