Can you stamp a PDF/A file with StampPDF Batch? May 7, 2013 / Judi / FAQ, FAQ StampPDF Batch, Stamping/Watermarking PDF/A requires all fonts to be embedded. StampPDF Batch allows you to embed the fonts or use Base 14 fonts. To maintain the document as PDF/A, you will need to use Type 1 fonts instead of Base 14 fonts. Fonts