Reduce image quality
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If the output PDF file contains images, you can reduce its size using image compression.
To enable image compression, set the CompressImages property to true
. The GroupDocs.Viewer compresses all images in the file.
The ImageQuality property determines the compression ratio. It is a quality value in percent. 100% means original quality.
The following code snippet shows how to compress images in the file:
using GroupDocs.Viewer;
using GroupDocs.Viewer.Options;
// ...
using (var viewer = new Viewer("sample.docx"))
{
PdfViewOptions viewOptions = new PdfViewOptions();
viewOptions.PdfOptimizationOptions = new PdfOptimizationOptions
{
CompressImages = true,
ImageQuality = 50
};
viewer.View(viewOptions);
}
Imports GroupDocs.Viewer
Imports GroupDocs.Viewer.Options
' ...
Module Program
Sub Main(args As String())
Using viewer = New Viewer("sample.docx")
Dim viewOptions As PdfViewOptions = New PdfViewOptions()
viewOptions.PdfOptimizationOptions = New PdfOptimizationOptions With {
.CompressImages = True,
.ImageQuality = 50
}
viewer.View(viewOptions)
End Using
End Sub
End Module
The following image demonstrates the result:
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