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7z - Just Solve the File Format Problem

7z

From Just Solve the File Format Problem
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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

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

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

Sample files

Links

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox

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