zlib-flate

zlib-flate -compress[=level] | -uncompress

zlib-flate performs raw zlib compression and decompression. It reads from standard input and writes to standard output, making it suitable for use in shell pipelines.The tool uses raw zlib compression format, which distinguishes it from utilities like gzip that add wrapper headers. Compression levels from 1 (fastest) to 9 (best compression) can be specified with the -compress= option.zlib-flate is included as a utility in the QPDF package. It is primarily provided as a debugging tool for working with raw zlib streams such as those found inside PDF files. It should not be used as a general purpose compression tool; use gzip instead for that.

-compress

Compress data.

Decompress data.

Compression level (1-9).

Raw zlib format only, no gzip or other wrapper headers. Part of the qpdf package. Not intended as a general purpose compression tool.

zlib-flate is included with QPDF, providing raw zlib deflate compression and decompression.

qpdf(1), gzip(1), zcat(1), pigz(1)