What file format is 7z?

7z is a compressed format file. 7z is a mainstream and efficient compression format. It is an file format that can use a variety of compression algorithms for data compression. It has an extremely high compression ratio. The 7z format supports solid compression, allowing similar files to be compressed in a stream, so that similar content can be compressed effectively.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

7z is a compressed file.

7z is a mainstream and efficient compression format with an extremely high compression ratio. In computer science, 7z is an archive format that can use a variety of compression algorithms for data compression. The format was originally implemented and adopted by 7-Zip, but the file format is public and the 7-Zip software itself is open source under the GNU Lesser General Public License (GNU LGPL). The latest version of the LZMA software development kit is V9.34. The MIME type of the 7z format is application/x-7z-compressed.

Usually the 7z format using 7-Zip can be 30-70% smaller than the compressed file using zip format. And the zip formats created with 7-Zip are 2-10% smaller than those created by most other compression software.

Main Features

• Open source and modular component structure (allows the use of any compression, transformation or Encryption algorithm)

• Highest compression ratio

• Powerful AES-256 encryption

• available Change and configure the compression algorithm

• Support very large files (up to 16EB)

• Unicode file name support

• Support solid compression, allowing internal files to be compressed in a stream, so that similar content can be effectively compressed

• Support file header compression

• Support multi-threaded compression

7z format supports 256-bit key AES algorithm encryption. The key is obtained by performing the SHA-256 hash algorithm on the password provided by the user (using a large number of iterations to make brute force decoding of the password more difficult)

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