Gzip

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== Specifications ==
 
== Specifications ==
 
* RFC 1952
 
* RFC 1952
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== Sample files ==
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* {{DexvertSamples|archive/gz}}
  
 
== Software ==
 
== Software ==
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* [https://github.com/google/zopfli zopfli] (Gzip-compatible, better compression, but very slow compression)
 
* [https://github.com/google/zopfli zopfli] (Gzip-compatible, better compression, but very slow compression)
 
* [http://pastebin.com/kYKpfUjd Tiny gzip decompressor without using zlib] (C++)
 
* [http://pastebin.com/kYKpfUjd Tiny gzip decompressor without using zlib] (C++)
* See also [[DEFLATE#Software]]
 
 
* {{Deark}}
 
* {{Deark}}
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* {{XAD}}
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See also [[DEFLATE#Software]].
  
 
== Links ==
 
== Links ==
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* [https://twitter.com/angealbertini/status/534817626342436864/photo/1 Chart of format]
 
* [https://twitter.com/angealbertini/status/534817626342436864/photo/1 Chart of format]
 
* [https://stackoverflow.com/questions/20762094/how-are-zlib-gzip-and-zip-related-what-do-they-have-in-common-and-how-are-they/20765054#20765054 How are zlib, gzip and Zip related? What do they have in common and how are they different?] - Response to StackOverflow question by zlib/gzip co-creator Mark Adler
 
* [https://stackoverflow.com/questions/20762094/how-are-zlib-gzip-and-zip-related-what-do-they-have-in-common-and-how-are-they/20765054#20765054 How are zlib, gzip and Zip related? What do they have in common and how are they different?] - Response to StackOverflow question by zlib/gzip co-creator Mark Adler
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* [[GZSteg]] - hiding a file within a gzip

Latest revision as of 10:33, 12 April 2024

File Format
Name gzip
Ontology
Extension(s) .gz
MIME Type(s) application/x-gzip
PRONOM x-fmt/266
Wikidata ID Q10287816

gzip is a compressed file format and command line utility used primarily on Unix-style operating systems, but available cross-platform. It uses DEFLATE compression.

Contents

[edit] Identification

gzip files begin with two signature bytes: 0x1F 0x8B. The third byte indicates the compression method, and is normally 0x08 (meaning DEFLATE).

gzip 0.5 apparently used Freeze/Melt 1.x format, with signature bytes 0x1F 0x9E.

[edit] Specifications

[edit] Sample files

[edit] Software

See also DEFLATE#Software.

[edit] Links

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