#1234·n2n

How to configure non-default zstd compression levels (without recompilation?)

Author: yaoj-yCreated Dec 29, 2025Updated Dec 29, 2025

I'm looking to use non-default zstd compression levels in this project but couldn't find clear documentation on how to set custom zstd level parameters. I want to confirm: Is there a built-in way to specify custom zstd compression levels (e.g., via command-line flags, config files, or API parameters)? If yes, what is the exact syntax/parameter name to use for setting non-default levels (e.g., level 1, or ultra levels like 22)? If no built-in parameters exist, is recompiling the code the only way to use non-default zstd levels?