guetzli

Compress a JPEG image

$ guetzli [input.jpg] [output.jpg]

Create a compressed JPEG from a PNG

$ guetzli [input.png] [output.jpg]

Compress a JPEG with the desired visual quality (84-100)

$ guetzli --quality [quality_value] [input.jpg] [output.jpg]

guetzli [flags] input_filename output_filename

Guetzli is a JPEG encoder that aims for excellent compression density at high visual quality. Guetzli-generated images are typically 20-30% smaller than images of equivalent quality generated by libjpeg. Guetzli generates only sequential (nonprogressive) JPEGs due to faster decompression speeds they offer.

--verbose

Print a verbose trace of all attempts to standard output.

--quality Q

Visual quality to aim for, expressed as a JPEG quality value.

--memlimit M

Memory limit in MB. Guetzli will fail if unable to stay under the limit. Default is 6000 MB

--nomemlimit

Do not limit memory usage.

This manual page was written by ChangZhuo Chen <czchen@debian.org> for the Debian GNU/Linux system (but may be used by others).