| DocumentJsonFormatter | Exports and imports changes to annotations of a PdfDocument into a reliable, cross-platform usable JSON format. |
| 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. |