 | |
| Filename extension |
.7z |
|---|---|
| Internet media type |
application/x-7z-compressed |
| Uniform Type Identifier (UTI) | org.7-zip.7-zip-archive |
| Magic number | '7', 'z', 0xBC, 0xAF, 0x27, 0x1C |
| Size limitation | 264 bytes (roughly 18 exabytes) |
| Developed by | Igor Pavlov[1] |
| Initial release | 1999[2] |
| Type of format | Data compression |
| Open format? | Yes: GNU Lesser General Public License / Public domain |
| Website | 7-zip |
7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License. The LZMA SDK 4.62 was placed in the public domain in December 2008. The latest stable version of 7-Zip and LZMA SDK is version 24.05.[2]
The 7z file format specification is distributed with 7-Zip's source code since 2015. The specification can be found in plain text format in the 'doc' sub-directory of the source code distribution.[3]
- ^ "A Few Questions for Igor Pavlov". Dr. Dobb's Data Compression Newsletter. 30 April 2003. Archived from the original on 28 October 2008. Retrieved 26 December 2009.
- ^ a b "History of 7-zip changes". Archived from the original on 27 February 2015. Retrieved 10 June 2010.
- ^ LZMA SDK, "DOC" directory, 7zFormat.txt