How to perform a deep PDF/A-2b compliance validation (ISO 19005-2) using Essential PDF?

[Marco Polo Borsoni]

I am currently using the Syncfusion.Pdf library to convert existing PDF documents to the PDF/A-2b standard using the ConvertToPDFA(PdfConformanceLevel.Pdf_A2B) method.

However, I am facing an issue with validation. When I check the loadedDocument.Conformance property after saving, it returns Pdf_A2B. But when I test the same file in external industry-standard validators (such as Xodo or VeraPDF), the file fails compliance with the following error:

"The font program is not embedded"

It seems that loadedDocument.Conformance only checks the metadata flag, but does not perform a structural analysis of the generated file.

Which specific class or tool should I use to perform a full ISO-compliant validation (Preflight) within my C# code to ensure the file is 100% compliant?

[Jeyalakshmi Thangamarippandian]

Hi Marco,

At present, the Syncfusion PDF library does not support PDF/A conformance validation; please use a third-party validator such as Adobe Acrobat Preflight verify compliance.

Based on our analysis, we suspect that the issue may be specific to the document you are using.

To assist you further, we kindly request that you share the input PDF document with us. This will enable us to replicate the issue accurately and provide a more effective and timely solution.

Please be assured that Syncfusion maintains strict confidentiality regarding all customer information. We have a Non-Disclosure Agreement (NDA) in place to ensure that any documents you share will be used solely for the purpose of investigating and resolving the issue. These documents will not be disclosed to any third party

 

Regards,
Jeyalakshmi T