Set Default Font Name

Aspose.PDF for .NET API allows you to set a default font name when a font is not available in the document. You can use DefaultFontName property of RenderingOptions class to set the default font name. In case DefaultFontName is set to null the Times New Roman font will be used. The following code snippet shows how to set a default font name when saving PDF into an image:

The next code snippet also works with Aspose.Drawing library.

// For complete examples and data files, please go to https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ConvertPdfToImageWithDefaultFont()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_DocumentConversion();

    // Open the document using 'using' block to ensure proper disposal
    using (var document = new Aspose.Pdf.Document(dataDir + "PdfToImageWithDefaultFont.pdf"))
    {
        // Open the image stream using 'using' block to ensure proper disposal
        using (var imageStream = new FileStream(dataDir + "SetDefaultFontName.png", FileMode.Create))
        {
            // Set the resolution for the image
            var resolution = new Aspose.Pdf.Devices.Resolution(300);

            // Create the PNG device and set rendering options
            var pngDevice = new Aspose.Pdf.Devices.PngDevice(resolution);
            var ro = new Aspose.Pdf.RenderingOptions
            {
                DefaultFontName = "Arial"
            };
            pngDevice.RenderingOptions = ro;

            // Process the first page of the document and save it as an image
            pngDevice.Process(document.Pages[1], imageStream);
        }
    }
}