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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Style-Type" content="text/css" />
<meta name="generator" content="MediaWiki 1.14.0" />
<meta name="keywords" content="PNG,Alpha channel,GIF,Image format,Pano12,Photoshop,TIFF" />
<title>PNG - PanoTools.org Wiki</title>
<!--[if lt IE 5.5000]><![endif]-->
<!--[if IE 5.5000]><![endif]-->
<!--[if IE 6]><![endif]-->
<!--[if IE 7]><![endif]-->
<!--[if lt IE 7]>
<meta http-equiv="imagetoolbar" content="no" /><![endif]-->
<style media="screen" type="text/css" title="Screen style sheet"> @import url(manual.css); </style>
</head>
<body class="mediawiki ltr ns-0 ns-subject page-PNG skin-monobook">
<div id="globalWrapper">
<div id="column-content">
<div id="content">
<a name="top" id="top"></a>
<h1 id="firstHeading" class="firstHeading">PNG</h1>
<div id="bodyContent">
<!-- start content -->
<p>The
Portable Network Graphics Image format<a class="external" href="http://wiki.panotools.org/Image_format">[*]</a>
is a common and free format used to store and exchange digital bitmapped images of all kinds. For general information see the PNG Wikipedia page<a class="external" href="http://www.wikipedia.org/wiki/PNG">[*]</a>
</p><p>PNG was originally created because of shortcomings and patent issues with widely used <a href="GIF.html" title="GIF">GIF</a> format. It uses lossless compression and supports different bit depth and <a href="Alpha_channel.html" title="Alpha channel">alpha channel</a> transparency. It often compresses better than the different <a href="TIFF.html" title="TIFF">TIFF</a> compressions. However, it is not very well supported by Photoshop<a class="external" href="http://wiki.panotools.org/Photoshop">[*]</a> (you need a format plugin to support all flavors: [1]<a class="external" href="http://www.fnordware.com/superpng/">[*]</a>)
</p><p>Only recently PNG support of the Panorama tools core library <a href="Pano12.html" title="Pano12">pano12</a> was fixed.
</p>
<div class="printfooter">
Retrieved from "<a href="PNG.html">http://wiki.panotools.org/PNG</a>"</div>
</div></div></div></div></body></html>

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