Photo Gallery gives you the ability to mark a person's face and apply a tag to it. I understand it inserts tags directly into the file rather than store it off in a database or accompanying metafil...

I can read xmp metadatas through pypdf with this code: from pypdf import PdfReader a = PdfReader("file.pdf") b = a.xmp_metadata c = b.pdf_keywords But is this the best way? And if I don...