Once you have lz4.exe (v1.8.3 win64) in your %PATH%, open a Command Prompt or PowerShell.
In comparison: | Algorithm | Compression Speed | Decompression Speed | Compression Ratio | |-----------|------------------|---------------------|-------------------| | LZ4 | Extremely Fast | Extremely Fast | Low-Moderate | | Zstd | Fast | Fast | Moderate | | Gzip | Moderate | Moderate | Moderate | | LZMA (7z) | Slow | Moderate | High | lz4 v183 win64
LZ4 is not the tool for archiving your photo collection. It is the tool for: Once you have lz4
By late 2018, LZ4 had matured significantly. Version 1.8.3 brought: By late 2018, LZ4 had matured significantly
The release notes from that period mention a subtle but important change: fixed a rare corruption issue when compressing memory-mapped files on Windows. For enterprise users, that was enough to standardize on 1.8.3.