PDF Annotation
Structured notes or markup attached to PDF content.
Definition
Includes highlights, comments, stamps, and drawing marks.
Why it matters
Used in review and collaboration workflows.
Related PDFHQ workflows
Use this concept when optimizing, converting, validating, or troubleshooting document workflows.
Related Knowledge
Watermark
Visible text or image overlay applied to pages.
Redaction
Permanent removal of sensitive content from a document.
Destination Action
Interactive instruction in PDFs that opens pages, views, or linked resources.