Check/validate PDF files conformance to standards like PDF/A or PDF/UA

Question

There are various PDF standards:

• PDF/A: PDF/A-1a, PDF/A-2a or PDF/A-3a
• PDF/UA
• potentially more

I want to check with Python if a given PDF file follows any of those.

I have seen veraPDF which seems to do what I need, but I have thousands of PDF files in a complex directory structure and I want to get statistics for a subset of those. Hence I want to perform this check with Python.

Answer 1

QuickPDF Library from Foxit could do this, even the free Lite version.