Bwmi8.7z

The file format, utilized by the 7-Zip archiver, is an open-source, high-efficiency compression standard. Its primary feature is the LZMA and LZMA2 compression algorithms , which provide significantly higher compression ratios than standard ZIP formats, especially for large datasets or files with redundant data. Core Features of 7z

Capable of handling archives up to 16 billion GB (16 exbibytes) in size. BWMi8.7z

Provides high-level security by encrypting both the data and the filenames , preventing unauthorized users from seeing what is inside the archive without a password. The file format, utilized by the 7-Zip archiver,

Combines multiple files into a single "solid" block, allowing the algorithm to find redundancies across different files for even smaller archive sizes. Provides high-level security by encrypting both the data

7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Does 7z compress better than zip? - Microsoft Community Hub