PDF metadata
PDF metadata is hidden or semi-hidden information stored in PDF document properties, XMP packets, annotations, attachments, forms, or actions.
It can reveal author names, software, dates, comments, embedded files, or JavaScript indicators.
A good PDF privacy workflow scans, cleans, and verifies the output.
Privacy Toolbox uses glossary pages like this to explain file privacy terms in clear language and link them to practical scan, clean, and verification tools.