Switch -M<n> - set compression method
Choosing <n> from 0 to 5 you may select an appropriate compression method
| -m0 | Store | Add files to archive without compression |
| -m1 | Fastest | Fastest method (least compressive) |
| -m2 | Fast | Fast compression method |
| -m3 | Normal | Normal (default) compression method |
| -m4 | Good | Good compression method (more compressive) |
| -m5 | Best | Best compression method (most compressive but also most slow) |
If this switch is not specified, WinRAR uses "-m3" method (Normal compression).
Compression method also can be selected with "Compression method" list in Archive name and parameters dialog.