Supported annotation types

Document Engine supports all common annotation types:

• Link
• Highlight, Underline, Strikeout, Squiggle
• Text
• Callout
• Ink
• Ellipse, Rectangle, Line, Polyline, Polygon
• Note
• Widget (requires the Form Filling component)
• Image
• Stamp
• Redaction (requires the Redaction component)
• Media

These are standard annotations (as defined in the PDF Reference) that can be read and written by many apps, such as Adobe Acrobat and Apple Preview.