OfficeHiddenDataKind

No category.

Identity and tracking properties: author, last modified by, last printed, revision number, company, manager, template path and total edit time.

Custom document properties.

Comments, replies and their parts.

Tracked insertions, deletions, moves and formatting changes. Changes are applied only through OfficeHiddenDataOptions.TrackedChanges.

People and person parts, and the author names on retained comments and revisions.

Hidden text, hidden rows, columns and sheets, hidden names, hidden slides and off-slide content.

Presentation speaker notes.

The package thumbnail image.

Custom XML data parts.

Exif, GPS, XMP and IPTC metadata inside embedded images. Provenance carried in the same containers is governed by OfficeHiddenDataKind.Provenance.

Embedded printer settings.

External links, cached external values, attached template references and pivot cache source paths.

Word document variables.

Word revision save identifiers (RSIDs).

Content Credentials (C2PA manifests and references to them) and IPTC digital source type declarations in the package and its images. They disclose how content was made, including AI generation, so they are opt-in. While they are kept, image metadata cleanup leaves an image's digital source type in place and does not touch images whose Content Credentials it would invalidate. Content Credentials that cover the whole package are always removed, because no change to a loaded document can keep them valid.

Embedded and associated file attachments, including file attachment annotations. Attachments are often the reason a file is shared, so they are opt-in. Content Credentials stored as an attachment are governed by OfficeHiddenDataKind.Provenance.

Scripts and actions that run or reach out when the document is opened or used, such as PDF JavaScript, launch, submit and remote-navigation actions, links with disallowed URI schemes, and rich media.

The document outline (bookmarks). Bookmarks help readers navigate, so they are opt-in.

Every category except OfficeHiddenDataKind.TrackedChanges, OfficeHiddenDataKind.HiddenContent, OfficeHiddenDataKind.Provenance, OfficeHiddenDataKind.Attachments and OfficeHiddenDataKind.Bookmarks, which change visible content, navigation or disclosures, or carry the content being shared, and are opt-in. OfficeHiddenDataKind.ActiveContent is included because scripts and actions are not visible content.

Every category, including provenance, attachments and bookmarks.