7z

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|extensions={{ext|7z}}
 
|extensions={{ext|7z}}
 
|mimetypes={{mimetype|application/x-7z-compressed}}
 
|mimetypes={{mimetype|application/x-7z-compressed}}
 +
|locfdd={{LoCFDD|fdd000539}}
 
|pronom={{PRONOM|fmt/484}}
 
|pronom={{PRONOM|fmt/484}}
 
|wikidata={{wikidata|Q27492089}}
 
|wikidata={{wikidata|Q27492089}}
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== Format details ==
 
== Format details ==
7z supports several compression schemes:
+
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)
+
* [[LZMA2]] (the default for 7-Zip 9.30 alpha +)
+
* [[PPMd]]
+
* BCJ
+
* BCJ2
+
* [[bzip2]]
+
* [[DEFLATE]]
+
  
 
== Identification ==
 
== Identification ==
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== 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]
+
  
 
== Software ==
 
== Software ==
 
* [[7-Zip]]
 
* [[7-Zip]]
* [http://7zx.en.softonic.com/mac 7zX for Mac]
+
* [https://7zx.en.softonic.com/mac 7zX for Mac]
 
* [http://p7zip.sourceforge.net/ p7zip]
 
* [http://p7zip.sourceforge.net/ p7zip]
  
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== 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]]

Revision as of 13:22, 15 August 2022

File Format
Name 7z
Ontology
Extension(s) .7z
MIME Type(s) application/x-7z-compressed
LoCFDD fdd000539
PRONOM fmt/484
Wikidata ID Q27492089

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

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.

Identification

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

Related formats

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

Specifications

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

Software

Sample files

Links

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Variants
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