1. GroupDocs Documentation
    2. /
    3. GroupDocs.Viewer Product Family
    4. /
    5. GroupDocs.Viewer for .NET
    6. /
    7. Developer guide
    8. /
    9. Render documents
    10. /
    11. Render to PDF
    12. /
    13. Optimize the output PDF file
    14. /
    15. Optimize images
    16. /
    17. Convert to grayscale

    Convert to grayscale

    On this page

    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 GroupDocs.Viewer.Domain.Documents.PostProcessing.Pdf.Optimization;
// ...

using (var viewer = new Viewer("sample.docx"))
{
    PdfViewOptions viewOptions = new PdfViewOptions();
    viewOptions.PdfOptimizationOptions = new PdfOptimizationOptions()
    {
        ConvertToGrayScale = true
    };
     
    viewer.View(viewOptions);
}

    The following image demonstrates the result:

    Convert to grayscale

    On this page

    © Groupdocs 2001-2024. All Rights Reserved.