or high-quality images. It supports full quality
color and transparency, offers excellent lossless compression of the image data,
and is widely supported. Please see the
<a href="http://www.libpng.org/pub/png/pngintro.html" class="offsite">PNG website</a>
for a complete description of the format.</p>

<p>Ghostscript provides a variety of devices for <acronymn>PNG output
varying by bit depth. For normal use we recommend <tt>png16m</tt> for 24-bit RGB color,
or <tt>pnggray</tt> for grayscale. The png256, png1