Documentation – Exporting Form Data

Python-Net: Export to FDF

Thu, 19 Feb 2026 00:00:00 +0000

FDF is a lightweight format designed specifically for storing and transferring PDF form data without embedding the entire document. In this example, a Form object is initialized from the aspose.pdf.facades module, allowing developers to interact with AcroForm fields and export their values.

Create an instance of pdf_facades.Form() to work with PDF form fields.
Call ‘bind_pdf()’ to attach the PDF document containing the form.
Use ‘open(’)’ to create a writable binary stream for the FDF file.
Export Form Data. Call ’export_fdf()’ to extract and save all form field values.

from io import FileIO
import sys
from os import path
import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades

sys.path.append(path.join(path.dirname(__file__), ".."))

from config import set_license, initialize_data_dir


# Export Data to FDF
def export_form_data_to_fdf(infile, outfile):
    """Export PDF form data to FDF file."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Create FDF file stream
    with open(outfile, "wb") as fdf_output_stream:
        # Export form data to FDF file
        pdf_form.export_fdf(fdf_output_stream)

Python-Net: Export to XFDF

Thu, 19 Feb 2026 00:00:00 +0000

XFDF is an XML representation of PDF form data that allows developers to transfer form field values independently from the original document. In this example, the Form object from aspose.pdf.facades is used to bind the source PDF and export its data into a structured XFDF file.

Initialize pdf_facades.Form() to manage PDF form data.
Call ‘bind_pdf()’ to attach the source PDF document.
Use ‘open()’ to create a writable binary stream.
Export Form Data. Call ’export_xfdf()’ to extract and save form field values in XFDF format.

from io import FileIO
import sys
from os import path
import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades

sys.path.append(path.join(path.dirname(__file__), ".."))

from config import set_license, initialize_data_dir


# Export Data to XFDF
def export_pdf_form_to_xfdf(infile, outfile):
    """Export PDF form data to XFDF file."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Create XFDF file stream
    with open(outfile, "wb") as xfdf_output_stream:
        # Export form data to XFDF file
        pdf_form.export_xfdf(xfdf_output_stream)

Python-Net: Export to JSON

Thu, 19 Feb 2026 00:00:00 +0000

JSON is a widely used data format that enables seamless exchange between applications and services. In this example, the Form object from the aspose.pdf.facades module is used to bind a PDF file and export its form field values into a readable JSON structure.

Initialize pdf_facades.Form() to work with form fields.
Use ‘bind_pdf()’ to attach the source PDF document.
Create a writable stream using ‘FileIO()’.
Call ’export_json()’ to extract form field values and save them in formatted JSON.

from io import FileIO
import sys
from os import path
import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades

sys.path.append(path.join(path.dirname(__file__), ".."))

from config import set_license, initialize_data_dir


# Export Data to JSON
def export_form_to_json(infile, outfile):
    """Export PDF form field values to JSON file."""
    # Create Form object
    form = pdf_facades.Form()

    # Bind PDF document
    form.bind_pdf(infile)

    # Create JSON file stream
    with FileIO(outfile, "w") as json_stream:
        # Export form field values to JSON
        form.export_json(json_stream, indented=True)

Python-Net: Export to XML

Thu, 19 Feb 2026 00:00:00 +0000

Exporting form data allows developers to reuse information stored in PDF AcroForms without manually copying field values. In this example, a Form object is created from the aspose.pdf. In the facades module, the source PDF is bound to it, and the form data is written to an XML stream.

Create a Form Object. Initialize pdf_facades.Form() to access and manage form fields.
Use ‘bind_pdf()’ to attach the source PDF document to the Form instance.
Create a writable file stream using ‘FileIO()’.
Call ’export_xml()’ to extract all form field values and write them into the XML file.

from io import FileIO
import sys
from os import path
import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades

sys.path.append(path.join(path.dirname(__file__), ".."))

from config import set_license, initialize_data_dir


# Export Data to XML
def export_pdf_form_data_to_xml(infile, datafile):
    """Export PDF form data to XML file."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Open XML file as stream
    with FileIO(datafile, "w") as xml_output_stream:
        # Export data from PDF form fields to XML
        pdf_form.export_xml(xml_output_stream)

Python-Net: Extract XFA Data

Thu, 19 Feb 2026 00:00:00 +0000

XFA (XML Forms Architecture) forms differ from traditional AcroForms because their data is stored as XML within the PDF. In this example, the Form object from the aspose.pdf.facades module is used to bind the PDF and extract its XFA data directly into a file.

Create an instance of pdf_facades.Form() to manage form data.
Call ‘bind_pdf()’ to attach the source PDF containing XFA forms.
Use ‘FileIO()’ to create a writable file stream.
Call ’extract_xfa_data()’ to export the embedded XFA XML data.

from io import FileIO
import sys
from os import path
import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades

sys.path.append(path.join(path.dirname(__file__), ".."))

from config import set_license, initialize_data_dir


# Extract XFA Data
def export_xfa_data(infile, outfile):
    """Export XFA form data."""
    # Create Form object
    form = pdf_facades.Form()

    # Bind PDF document
    form.bind_pdf(infile)

    with FileIO(outfile, "w") as stream:
        # Export embedded XFA XML data to the output stream
        form.extract_xfa_data(stream)