# zstd > Compress or decompress files with Zstandard compression. > More information: . - Compress a file into a new file with the .zst suffix: `zstd {{file}}` - Decompress a file: `zstd -d {{file}}.zst` - Decompress to `stdout`: `zstd -dc {{file}}.zst` - Compress a file specifying the compression level, where 1=fastest, 19=slowest and 3=default: `zstd -{{level}} {{file}}` - Unlock higher compression levels (up to 22) using more memory (both for compression and decompression): `zstd --ultra -{{level}} {{file}}`