7z

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|extensions={{ext|7z}}
 
|extensions={{ext|7z}}
 
|mimetypes={{mimetype|application/x-7z-compressed}}
 
|mimetypes={{mimetype|application/x-7z-compressed}}
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|locfdd={{LoCFDD|fdd000539}}
 
|pronom={{PRONOM|fmt/484}}
 
|pronom={{PRONOM|fmt/484}}
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|wikidata={{wikidata|Q270131}}
 
}}
 
}}
'''7z''' is a file format for archiving and data [[compression]], developed by Igor Pavlov. It is the native format of the [[7-Zip]] archiving application.
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'''7z''' is a file format for archiving and data compression, developed by Igor Pavlov. It is the native format of the [[7-Zip]] archiving application.
  
 
== Format details ==
 
== Format details ==
7z supports several compression schemes:
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The 7z format defines many compression methods. The ones normally used are [[LZMA2]] (default for 7-Zip 9.30 alpha ), [[LZMA]] (default for 7-Zip prior to 9.30 alpha), [[PPMd]], and [[bzip2]].
* [[LZMA]] (the default for 7-Zip prior to 9.30 alpha)
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* [[LZMA2]] (the default for 7-Zip 9.30 alpha +)
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* [[PPMd]]
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* BCJ
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* BCJ2
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* [[bzip2]]
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* [[DEFLATE]]
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== Identification ==
 
== Identification ==
Line 29: Line 24:
  
 
== Specifications ==
 
== Specifications ==
* Refer to the DOC/7zFormat.txt file in the source distribution
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* Refer to the DOC/7zFormat.txt and DOC/Methods.txt files in the source distribution.
** [http://cpansearch.perl.org/src/BJOERN/Compress-Deflate7-1.0/7zip/DOC/7zFormat.txt 7zFormat.txt]
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== Software ==
 
== Software ==
 
* [[7-Zip]]
 
* [[7-Zip]]
* [http://7zx.en.softonic.com/mac 7zX for Mac]
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* [https://7zx.en.softonic.com/mac 7zX for Mac]
 
* [http://p7zip.sourceforge.net/ p7zip]
 
* [http://p7zip.sourceforge.net/ p7zip]
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* [https://github.com/conor42/Radyx Radyx] - creates 7-zip archives using only the LZMA2 compression algorithm provided by the Fast LZMA2 Library
  
 
== Sample files ==
 
== Sample files ==
* https://telparia.com/fileFormatSamples/archive/7z/
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* {{DexvertSamples|archive/sevenZip}}
  
 
== Links ==
 
== Links ==
* [http://www.7-zip.org/7z.html 7-Zip page about 7z Format]
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* [https://www.7-zip.org/7z.html 7-Zip page about 7z Format]
 
* [[Wikipedia:7z|Wikipedia article]]
 
* [[Wikipedia:7z|Wikipedia article]]

Latest revision as of 02:55, 28 December 2023

File Format
Name 7z
Ontology
Extension(s) .7z
MIME Type(s) application/x-7z-compressed
LoCFDD fdd000539
PRONOM fmt/484
Wikidata ID Q270131

7z is a file format for archiving and data compression, developed by Igor Pavlov. It is the native format of the 7-Zip archiving application.

Contents

[edit] Format details

The 7z format defines many compression methods. The ones normally used are LZMA2 (default for 7-Zip 9.30 alpha ), LZMA (default for 7-Zip prior to 9.30 alpha), PPMd, and bzip2.

[edit] Identification

7z files begin with signature bytes '7' 'z' BC AF 27 1C.

[edit] Related formats

  • S7z
  • UFA (predecessor?)
  • 777 (predecessor?)
  • BIX (predecessor?)
  • ARG (same author)

[edit] Specifications

  • Refer to the DOC/7zFormat.txt and DOC/Methods.txt files in the source distribution.

[edit] Software

  • 7-Zip
  • 7zX for Mac
  • p7zip
  • Radyx - creates 7-zip archives using only the LZMA2 compression algorithm provided by the Fast LZMA2 Library

[edit] Sample files

[edit] Links

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