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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML><HEAD><TITLE>Pngtopnm User Manual</TITLE></HEAD>
<BODY>
<H1>pngtopnm</H1>
Updated: 22 July 2008
<BR>
<A HREF="#index">Table Of Contents</A>
<H2>NAME</H2>
pngtopnm - convert a PNG image into a PNM image
<H2 id="synopsis">SYNOPSIS</H2>
<B>pngtopam</B>
[<b>-verbose</b>]
[<b>-alpha</b> | <b>-mix</b>]
[<b>-background</b>=<i>color</i>]
<BR>
[<b>-gamma</b>=<i>value</i>]
[<b>-text</b>=<i>filename</i>]
[<b>-time</b>]
[<I>pngfile</I>]
<P>Minimum unique abbreviation of option is acceptable. You may use double
hyphens instead of single hyphen to denote options. You may use white
space in place of the equals sign to separate an option name from its value.
<H2 id="description">DESCRIPTION</H2>
<p>This program is part of <a href="index.html">Netpbm</a>.
<p><b>pngtopnm</b> was obsoleted by <a
href="pngtopam.html"><b>pngtopam</b></a>, introduced with Netpbm 10.44
(September 2008). <b>pngtopam</b> is backward compatible with
<b>pngtopnm</b>, plus adds many additional functions, including the
ability to produce a PAM image that includes an alpha (transparency)
channel.
<p><b>pngtopnm</b> remains in the Netpbm package because it may have
fewer bugs for now than <b>pngtopam</b>, and may be faster in some
environments. Some day, <b>pngtopnm</b> will probably become an alias
for <b>pngtopam</b>.
<p>You can use the <b>pngtopam</b> documentation for <b>pngtopnm</b>,
considering the following differences:
<ul>
<li><b>pngtopnm</b> options are a subset of <b>pngtopam</b>'s, as
documented above.
<li>Any change that the <b>pngtopam</b> manual says happened in or
after Netpbm 10.44 doesn't apply to <b>pngtopnm</b>.
</ul>
</BODY>
</HTML>
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