# GrapeCity.Documents.Imaging.Windows.WicPngFilter

## Content

<div class="doc-site-dotnet-api-container">




  <h1 id="GrapeCity_Documents_Imaging_Windows_WicPngFilter" data-uid="GrapeCity.Documents.Imaging.Windows.WicPngFilter" class="text-break">WicPngFilter Enum
</h1>
  <div class="markdown level0 summary"><p>Describes the PNG filters available for compression optimization.</p>
</div>
  <div class="markdown level0 conceptual"></div>
  <h6><strong>Namespace</strong>: <a class="xref" href="GrapeCity.Documents.Imaging.Windows.html">GrapeCity.Documents.Imaging.Windows</a></h6>
  <h6><strong>Assembly</strong>: DS.Documents.Imaging.Windows.dll</h6>
  <h5 id="GrapeCity_Documents_Imaging_Windows_WicPngFilter_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public enum WicPngFilter</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Enum WicPngFilter</code></pre>
  </div>
  <h3 id="fields">Fields
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    <thead>
    </thead></thead><tbody>
      <tr>
        <td id="GrapeCity_Documents_Imaging_Windows_WicPngFilter_Adaptive">Adaptive</td>
        <td><p>Indicates a PNG adaptive filter. This enables WIC to choose the best filtering mode on a per-scanline basis.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Imaging_Windows_WicPngFilter_Average">Average</td>
        <td><p>Indicates a PNG average filter.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Imaging_Windows_WicPngFilter_None">None</td>
        <td><p>Indicates no PNG filter.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Imaging_Windows_WicPngFilter_Paeth">Paeth</td>
        <td><p>Indicates a PNG paeth filter.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Imaging_Windows_WicPngFilter_Sub">Sub</td>
        <td><p>Indicates a PNG sub filter.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Imaging_Windows_WicPngFilter_Unspecified">Unspecified</td>
        <td><p>Indicates an unspecified PNG filter. This enables WIC to algorithmically choose the best filtering option for the image.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Imaging_Windows_WicPngFilter_Up">Up</td>
        <td><p>Indicates a PNG up filter.</p>
</td>
      </tr>
    </tbody>
  </table>
</div>