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A generic error occurred in GDI+ by converting PDF to TIF

Hi dear Aspose support,

for a project, we are converting email attachments to TIF. Some of the PDF files give us the exception below. I do know what causes the exception but I'm curious if you could give me some hints for a workaround.

I tried originally with using TiffDevice, where I got the GDI+ exceptions at first place and after that I tried using PdfConverter, just to see, that TiffDevice is used internally, which produces the same exceptions.

My code is:

private static bool ConvertPdfToTif(string sourceFilePath, string destinationFilePath, bool preserveColors, bool applyApplicationDpi = false)
//this is set as a workaround for a huge Aspose problem, which they already confirmed. If one tries to force an one bit color here,
//then the memory usage goes freaking wild and an OutOfMemory exception is thrown.
preserveColors = true;

var pdfConverter = new PdfConverter();

// Create Resolution object
var resolution300 = new Aspose.Pdf.Devices.Resolution(NumericConstants.ApplicationDPI);
var resolution96 = new Aspose.Pdf.Devices.Resolution(96);

// Create TiffSettings object
var tiffSettings = new Aspose.Pdf.Devices.TiffSettings();

tiffSettings.Compression = preserveColors ? Aspose.Pdf.Devices.CompressionType.LZW : Aspose.Pdf.Devices.CompressionType.CCITT4;
tiffSettings.Depth = preserveColors ? Aspose.Pdf.Devices.ColorDepth.Default : Aspose.Pdf.Devices.ColorDepth.Format1bpp;
tiffSettings.SkipBlankPages = false;


pdfConverter.Resolution = applyApplicationDpi ? resolution300 : resolution96;
pdfConverter.SaveAsTIFF(destinationFilePath, tiffSettings);

return File.Exists(destinationFilePath);
catch (Exception exc)
SLogger.WriteError(exc, null, "Dateiname: " + sourceFilePath);
return false;

A generic error occurred in GDI+.
StackTrace : at System.Drawing.Image.SaveAdd(EncoderParameters encoderParams)
at aa.a.‡‘()
at Aspose.Pdf.Devices.TiffDevice.Process(Document document, Int32 fromPage, Int32 toPage, Stream output)
at Aspose.Pdf.Facades.PdfConverter.SaveAsTIFF(Stream outputStream, Int32 imageWidth, Int32 imageHeight, TiffSettings settings)
at Aspose.Pdf.Facades.PdfConverter.SaveAsTIFF(String outputFile, TiffSettings settings)
at TiS.DevGER.MR.KabelD.Common.Converting.IeAsposeConverter.ConvertPdfToTif(String sourceFilePath, String destinationFilePath, Boolean preserveColors, Boolean applyApplicationDpi) in c:\DEV\de_kabelDeutschland_dia\TiS.DevGER.MR.KabelD.Common\Converting\IEAsposeConverter.cs:line 528

Thanks in advance for the help!

Vasil Tonev

Hi Vasil,

Thanks for contacting support.

Can you please share the resource PDF files causing this problem, so that we can test the scenario in our environment. We are sorry for this inconvenience.