PDF to Tiff convert results in blank pages after the first page

When attempting to convert the attached 5 page PDF to a multi-page tiff, the first page renders correctly but he other 4 pages are blank. I am using vb.net (3.5 .Net framework) and version 11.8.0.0 of the Aspose.PDF.dll. I have tried using both the TiffDevice and PDFConverter classes but the results are the same. I don’t know if there is something malformed about the PDF document, if there is some security in the PDF preventing page extraction, or if I am not using the objects correctly. Here is some sample code I am using.





Private Sub UseTiffDeviceMethod()



Dim pdfDocument As New Aspose.Pdf.Document(My.Application.Info.DirectoryPath & “\test.pdf”)

pdfDocument.Flatten()

pdfDocument.Form.Flatten()



'create Resolution object

Dim resolution = New Aspose.Pdf.Devices.Resolution(300)



'create TiffSettings object

Dim tiffSettings As New Aspose.Pdf.Devices.TiffSettings()

tiffSettings.Compression = Aspose.Pdf.Devices.CompressionType.CCITT4

tiffSettings.Depth = Aspose.Pdf.Devices.ColorDepth.Format1bpp

tiffSettings.SkipBlankPages = False



'create TIFF device

Dim tiffDevice As New Aspose.Pdf.Devices.TiffDevice(resolution, tiffSettings)

tiffDevice.Process(pdfDocument, My.Application.Info.DirectoryPath & “\test1.tif”)



End Sub



Private Sub UsePDFConverterMethod()



Dim dataDir As String = My.Application.Info.DirectoryPath

Dim pdfConverter As New Aspose.Pdf.Facades.PdfConverter()

Dim resolution As New Aspose.Pdf.Devices.Resolution(300)

pdfConverter.Resolution = resolution

pdfConverter.BindPdf(dataDir & “\test.pdf”)

pdfConverter.DoConvert()

Dim tiffSettings As New Aspose.Pdf.Devices.TiffSettings()

tiffSettings.Depth = Aspose.Pdf.Devices.ColorDepth.Format1bpp

pdfConverter.SaveAsTIFF(dataDir & “\test2.tif”, Aspose.Pdf.Devices.CompressionType.CCITT4)

pdfConverter.Close()



End Sub

Hi Steven,

Thanks for your inquiry. I have tested your scenario with shared document using Aspose.Pdf for .NET 12.0.0 and managed to observe the reported issue. For further investigation, I have logged an issue in our issue tracking system as PDFNET-41445 and also linked your request to it. We will keep you updated via this thread regarding the issue status.

We are sorry for the inconvenience caused.

The issues you have found earlier (filed as PDFNET-41445) have been fixed in Aspose.PDF for .NET 18.9.