7z
From Just Solve the File Format Problem
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| − | '''7z''' is a file format for archiving and data [[compression]]. It is the native format of the [[7-Zip]] archiving application. | + | '''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 == | |
| + | 7z supports several compression schemes: | ||
* [[LZMA]] (the default for 7-Zip prior to 9.30 alpha) | * [[LZMA]] (the default for 7-Zip prior to 9.30 alpha) | ||
* [[LZMA2]] (the default for 7-Zip 9.30 alpha +) | * [[LZMA2]] (the default for 7-Zip 9.30 alpha +) | ||
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The 7-Zip software will automatically find embedded 7z data in many cases (but apparently not if the file extension is .7z). This makes it possible to create hybrid files that look like some other format, but which will be interpreted as 7z format by 7-Zip. | The 7-Zip software will automatically find embedded 7z data in many cases (but apparently not if the file extension is .7z). This makes it possible to create hybrid files that look like some other format, but which will be interpreted as 7z format by 7-Zip. | ||
| + | |||
| + | == Related formats == | ||
| + | * [[S7z]] | ||
| + | * [[UFA]] (predecessor?) | ||
| + | * [[777]] (predecessor?) | ||
| + | * [[BIX]] (predecessor?) | ||
| + | * [[ARG]] (same author) | ||
== Specifications == | == Specifications == | ||
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* [http://7zx.en.softonic.com/mac 7zX for Mac] | * [http://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] | * [http://www.7-zip.org/7z.html 7-Zip page about 7z Format] | ||
* [[Wikipedia:7z|Wikipedia article]] | * [[Wikipedia:7z|Wikipedia article]] | ||
Revision as of 15:36, 12 July 2020
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
7z supports several compression schemes:
- 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
7z files begin with signature bytes '7' 'z' BC AF 27 1C.
The 7-Zip software will automatically find embedded 7z data in many cases (but apparently not if the file extension is .7z). This makes it possible to create hybrid files that look like some other format, but which will be interpreted as 7z format by 7-Zip.
Related formats
Specifications
- Refer to the DOC/7zFormat.txt file in the source distribution
