Import or Export Forms

If you want to import or export forms with XFDF, you can use exportAnnotations and importAnnotations of annotationManager.

Import Forms

After the document is loaded, you can import the field values of XFDF (<fields>) with importAnnotations; each value goes to the field of the same name in the document. The type of XFDF can be String or File

await annotationManager.importAnnotations(xfdf)

Export Forms

After the document is loaded, you can export the field values with exportAnnotations as XFDF string. Passing only the widgets as annotationList leaves out the other annotations. The widgets themselves are saved in the PDF.

const { Annotations } = instance.Core
const widgets = annotationManager.getAnnotationsList().filter(annotation => annotation instanceof Annotations.WidgetAnnotation)
const xfdfString = await annotationManager.exportAnnotations({ annotationList: widgets, fields: true })