Compress level
The compression level to use when using zstd or gzip compression. When using zstd, valid values are -7 to 22, with -7 being the lowest compression level and 22 being the highest compression level. When using gzip, valid values are 1-9, with 1 being the lowest compression level and 9 being the highest compression level. Higher compression levels are slower. The zstd default is 3, and the gzip default is 6.