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<h1>Details of Ghostscript output devices</h1>

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<h2>Table of contents</h2>

<blockquote><ul>
<li><a href="#Measurements">Notes on measurements</a>
<li><a href="#File_formats">Image file formats</a>
<ul>
<li><a href="#PNG">PNG file format</a>
<li><a href="#JFIF">JPEG file format (JFIF)</a>
<li><a href="#PNM">PNM file format</a>
<li><