How this works
This clears the PDF's document properties — title, author, subject, keywords, creator, producer, and creation/modification dates — the same fields you'd see in a PDF reader's "Document Properties" panel, which can reveal who created a file and what software they used even after the visible content has been redacted.
Common questions
Does this remove metadata hidden inside images embedded in the PDF, like photo EXIF data?
No — this clears the PDF document's own properties, not metadata embedded separately inside any images placed on its pages. If a PDF contains a photo with GPS EXIF data, that would need to be stripped from the image before it's placed into the PDF.
Will removing metadata affect how the PDF looks or prints?
No — these are invisible document properties, not visible content; clearing them doesn't touch any page, text or image in the file.