![]() Large file size support, up to 1600 terabytes. ![]() High compression ratio (dependent on the compression method used).An open architecture, which allows the support for a variety of compression methods.According to, the official homepage for the 7-Zip file archiving program, the 7z file format has the following main features: There are other specification options from third-party sources including but not limited to py7zr, a 7z python library that also documents the file's key characteristics and structure. There is no formal format specification for 7z but the LZMA compression specification serves as an "unofficial" specification with information on the file and byte structure. ![]() 7z was initially the default format for 7-Zip, developed by Igor Pavlov in 1999 that was used to compress groups of files. 7z is an archive file format that supports a variety of compression methods and encryption.
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