What metadata can be removed from Office documents?

TypeAuthorTitleManagerCompanyCategoryKeywordsDate CreatedLast Updated DateLast Modified DateLast Printed DateTracked ChangesCommentsHidden Text
DOCSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupported
DOCXSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupported
PPTXSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupported
XLSXSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupported

What metadata can be removed from PDF documents?

Document TypeAuthorTitleSubjectKeywordsManagerDate CreatedLast Modified DateLast Printed DateCreatorProducer
PDF (PDF/A)SupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupportedSupported

Tracked changes include insertions, deletions, moved text, and formatting changes.

DOC refers to the older Microsoft Word format used after 1997, while DOCX refers to the newer XML-based format, used after 2007.