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PDF not converted to PDF/A-1b and PDF/A-3b correctly

We have a text searchable PDF get from a scanner that need to be converted to PDF/A standard. We have used Aspose.PDF to convert it using the following code:

using (Aspose.Pdf.Document pdfDocument = new Aspose.Pdf.Document(pdfInputFilePath))
pdfDocument.Convert(logFilename, Aspose.Pdf.PdfFormat.PDF_A_1B, Aspose.Pdf.ConvertErrorAction.Delete);

The final PDF got some squared characters in some places, other places the text are lost.
We have tried to convert that same original PDF using Adobe Acrobat XI Pro Preflight feature and see that it can convert successfully.
These are the results:
| Aspose.PDF | Adobe Acrobat XI Pro
PDF_A_1A | Failed | Failed
PDF_A_1B | Failed | Succesfully
PDF_A_3B | Failed | Succesfully


I’ve attached the PDF here. Please take a look. Thanks.

Hi Tan,

Thanks for your inquiry. We have tested the scenario and found the output files do not respective PDFA standard compliant. We have logged issues as following in our issue tracking system for further investigation and resoltion. We will notify you as soon as we resolve these.

PDFNEWNET-38048: PDFA1b compliance issue.
PDFNEWNET-38049: PDFA1a compliance issue.
PDFNEWNET-38050: PDFA3b compliance issue.

We are sorry for the inconvenience caused.

Best Regards,

Hi Aspose.PDF team,

Do you have any update on this issue?
It’s very urgent for us that you can fix this issue soon, because the process of converting PDF to PDF/A is a critical path for a PDF to be imported to our live production environment.

We are anxiously waiting for this fix. If it takes too long, we will consider switching to another library that support it better.


Hi Tan,

Thanks for your inquiry. I am afraid we have noticed your issues recently and currently these are pending for investigation. We have recorded your concern and will share our findings/ETA as soon as investigation is completed.

Thanks for your patience and cooperation.

Best Regards,