Fill, Flatten and Edit PDF Forms Use this demo to fill the fields of an existing PDF form with the PDF editor, to import the values of a FDF or XFDF file and to export the filled values as FDF. The appearance of the fields can be changed, the fields can be made read-only, hidden, renamed or removed and the options of a choice field can be replaced. The filled fields or all the fields can be flattened to static page content. The page added at the end of the document lists the fields read from the form with their type and value. The sample form is the registration form generated by the Create PDF Forms from Code demo. The field names below refer to it; a field missing from another form is skipped. Enter PDF File URL Upload PDF File Clear File Open Password User Password: Owner Password: Field Values Fill the Fields with the Values Below Full Name: Email: Country: GermanyAustriaFranceItalySpainUnited States Ticket Type: PremiumStandardStudent Newsletter Accept the Terms Sessions (comma separated): Comments: Form Data File Import the Sample FDF Data File before Filling the Fields Upload FDF or XFDF File: Field Changes Replace the Options of the Country Field Make All the Fields Read-Only Set the Colors of the Text Fields Set the Font of the Text Fields, Size: Comments Field Visibility: VisibleHiddenVisibleNotPrintedHiddenPrinted Rename the Comments Field to Remarks Remove the Access Code Field Generate the Appearances of the Filled Fields Add a Substitution Font for Missing Characters Output Flatten: NoneFilled FieldsAll Fields Output: PDF DocumentFDF Data of the Form Add a Page Listing the Fields of the Form Fill PDF Form