| DocumentJsonFormatter | Exports and imports changes made to annotations and form fields of a PdfDocument into a
JSON string. |
| XfdfFormatter | Provides methods for exporting data in XFDF format from the document as well as parsing the existing XFDF data and applying it to the document. |
| DocumentJsonFormatterException | Exception thrown by the DocumentJsonFormatter when encountering an import/export error. |
| XfdfFormatterException | Exception thrown by the XfdfFormatter when encountering an import/export error. |