7z

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

7z is a file format for archiving and data compression. It is the native format of the 7-Zip archiving application.

It supports several compression schemes:

Contents

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.

Specifications

  • Refer to the DOC/7zFormat.txt file in the source distribution

Software

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