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 image-fs8.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).