# gzip > Compress/uncompress files with gzip compression (LZ77). - Compress a file, replacing it with a gzipped compressed version: `gzip {{file.ext}}` - Decompress a file, replacing it with the original uncompressed version: `gzip -d {{file.ext.gz}}` - Compress a file specifying the output filename: `gzip -c {{file.ext}} > compressed-file.ext.gz` - Uncompress a gzipped file specifying the output filename: `gzip -c -d {{file.ext.gz}} > uncompressed-file.ext` - Specify the compression level. 1=Fastest (Worst), 9=Slowest (Best), Default level is 6: `gzip -9 -c {{file.ext}} > compressed-file.ext.gz`