Convert to grayscale Leave feedback
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To speed up the printing of a PDF file and reduce its size, you can convert it from RGB color space to grayscale.
To convert a PDF file to grayscale, set the ConvertToGrayScale property to true.
The following code snippet shows how to convert a PDF file to grayscale:
using GroupDocs.Viewer;
using GroupDocs.Viewer.Options;
// ...
using (var viewer = new Viewer("sample.docx"))
{
PdfViewOptions viewOptions = new PdfViewOptions();
viewOptions.PdfOptimizationOptions = new PdfOptimizationOptions
{
ConvertToGrayScale = true
};
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 {
.ConvertToGrayScale = True
}
viewer.View(viewOptions)
End Using
End Sub
End Module
The following image demonstrates the result:
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