PNGQUANT(1)
NAME
pngquant - PNG image optimising utility
SYNOPSIS
pngquant [ options ] <ncolors> [pngfile [pngfile ...]] pngquant [ options ] -map mapfile [pngfile [pngfile ...]] Note that it's required to specify the number of colors (<ncolors>) or the mapfile. Arguments in square brackets are optional.
DESCRIPTION
This manual page documents briefly the pngquant command.
pngquant quantizes one or more 32-bit RGBA PNGs to 8-bit (or smaller)
RGBA-palette PNGs using either ordered dithering or Floyd-Steinberg
diffusion dithering (default). The output filename is the same as the
input name except that it ends in -fs8.png or -or8.png (unless the
input is stdin, in which case the quantized image will go to stdout).
The default behavior if the output file exists is to skip the conversion; use -force to overwrite.
OPTIONS
-force Overwrite existing output files.
- -ordened, -nofloyd, -nofs
- Use ordered dithering.
- -verbose, -noquiet
- Print status messages.
- NOTE: the -map option is NOT YET SUPPORTED.
EXAMPLE
- Creating a new image with the number of colors reduced to 64:
- pngquant 64 image.png
- The resulting image will have 64 colors and will be saved as imagefs8.png.
AUTHOR
pngquant was written by Greg Roelofs <newt@pobox.com>.
- This manual page was written by Nelson A. de Oliveira <naoliv@debian.org>, for the Debian project (but may be used by others).