Supported Annotation Types
PSPDFKit for Web supports all common annotation types:
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.
Ink and image annotations may be used as signatures. Please see Adding an Electronic Signature to learn more. Using the signature tool requires the Electronic Signatures component. More limited signing functionality is available only with the Annotations component for licenses originally obtained in April 2021 or earlier.