7z
From Just Solve the File Format Problem
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:
- 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
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
