NAME¶

cjpegli - cjpegli

SYNOPSIS¶

cjpegli INPUT OUTPUT [OPTIONS...]

DESCRIPTION¶

INPUT

the input can be PNG, APNG, EXR, PPM, PFM, or PGX

OUTPUT

the compressed JPG output file

-d maxError, --distance=maxError

Max. butteraugli distance, lower = higher quality. 1.0 = visually lossless (default). Recommended range: 0.5 .. 3.0. Allowed range: 0.0 ... 25.0. Mutually exclusive with --quality and --target_size.

-q QUALITY, --quality=QUALITY

Quality setting (is remapped to --distance).

Default is quality 90.

Quality values roughly match libjpeg quality. Recommended range: 68 .. 96. Allowed range: 0 .. 100. Mutually exclusive with --distance and --target_size.

--chroma_subsampling=444|440|422|420

Chroma subsampling setting.

-p N, --progressive_level=N

Progressive level setting. Range: 0 .. 2. Default: 2. Higher number is more scans, 0 means sequential.

-v, --verbose

Verbose output; can be repeated, also applies to help (!).

-h, --help

Prints this help message. Add -v (up to a total of 2 times) to see more options.

AUTHOR¶

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