.7z format specification — py7zr – 7-zip archive library
: You may find that further compressing it yields little result if it was generated from random data, which is typical for "GEN" speed-test files. GEN100MB15807.7z
Because this is not a widely recognized public file, you should treat it with caution: GEN100MB15807.7z
: If you are on Windows 11 , you can natively right-click and extract .7z files without third-party software. Performance Expectations If this is indeed a 100MB test file: GEN100MB15807.7z