PNGQUANT

Section: User Commands (1) Updated: Thu, 07 Dec 2006 00:33:40 -0200 Local index Up

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).

This document was created by man2html, using the manual pages.
Time: 21:24:56 GMT, April 16, 2011