What file is .7z?

".7z" is a compressed file that can be opened using decompression software such as 7-zip, WinZip, Haoyi, and QuickZip. 7-zip is the official tool for 7z files. 7z is a compressed file format that is used when 7-zip compresses files. It uses the LZMA compression algorithm and has a very high compression ratio.

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

".7z" is a compressed file, and 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 format created with 7-Zip is 2-10% smaller than that created by most other compression software.

Files with the extension ".7z" can be decompressed by winrar, 360 compression, fast compression, good compression, winmount, winzip and other software under Windows.

7z is similar to the rar we see on the Windows platform; 7z has a high compression ratio. It was originally created by 7-zip, an open source compressed file. Supported compression formats, but officially because 7-zip is an open source original, the 7z format is also supported by most compression software;

7z format features

　1. Open source and modular Optimized component structure (allowing the use of any compression, conversion or encryption algorithm)

2. Highest compression ratio

3. Powerful AES-256 encryption

4. Can Change and configure the compression algorithm

　5. Support very large files (up to 16EB)

　6. Support Unicode file names

　7. Support solid compression and allow content Class files are compressed in a stream, so that similar content is effectively compressed

Support file header compression

Support multi-threaded compression

7z format support 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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