Documentation – Importing Form Data

Python-Net: Import FDF Data

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

FDF (Forms Data Format) is a lightweight format used to store and transfer PDF form field values without including the entire document. In this example, the Form facade from aspose.pdf.facades is used to load a PDF form and import field data from an external FDF file. After the import process, the updated PDF is saved as a new file.

Initialize pdf_facades.Form() to work with interactive PDF form fields.
Call ‘bind_pdf()’ to attach the PDF form template.
Use ‘open()’ to read the FDF file in binary mode.
Call ‘import_fdf()’ to populate PDF fields with data from the FDF file.
Save the updated PDF.

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


# Import Data from FDF
def import_fdf_to_pdf_form(infile, datafile, outfile):
    """Import form data from FDF file into PDF form fields."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Open FDF file as stream
    with open(datafile, "rb") as fdf_input_stream:
        pdf_form.import_fdf(fdf_input_stream)

    # Save updated PDF
    pdf_form.save(outfile)

Python-Net: Import XFDF Data

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

XFDF (XML Forms Data Format) is an XML representation of PDF form data designed for interoperability and data exchange. In this example, the Form facade from the aspose.pdf.facades module is used to bind a PDF form and import field values from an external XFDF file. After importing the data, the updated PDF is saved as a new document.

Initialize pdf_facades.Form() to interact with PDF form fields.
Call ‘bind_pdf()’ to attach the PDF form template.
Use ‘open()’ to read the XFDF file.
Call ‘import_xfdf()’ to populate PDF fields with values from the XFDF file.
Save the updated Document.

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


# Import Data from XFDF
def import_data_from_xfdf(infile, datafile, outfile):
    """Import form data from XFDF file into PDF form fields."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Open XFDF file as stream
    with open(datafile, "rb") as xfdf_input_stream:
        # Import data from XFDF into PDF form fields
        pdf_form.import_xfdf(xfdf_input_stream)

    # Save updated PDF
    pdf_form.save(outfile)

Python-Net: Import JSON Data

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

JSON is widely used for storing and transferring structured data between systems. In this example, the Form facade from the aspose.pdf.facades module is used to bind a PDF form and import field values from an external JSON file. After the import process, the updated document is saved as a new PDF.

Initialize pdf_facades.Form() to interact with PDF form fields.
Call ‘bind_pdf()’ to attach the PDF form template.
Use ‘FileIO()’ to read the JSON file containing form values.
Call ‘import_json()’ to populate PDF fields using JSON key–value pairs.
Save the updated PDF.

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


# Import from JSON
def import_json_to_pdf_form(infile, datafile, outfile):
    """Import form data from JSON file into PDF form fields."""
    # Create Form object
    form = pdf_facades.Form()

    # Bind PDF document
    form.bind_pdf(infile)

    # Open JSON file as stream
    with FileIO(datafile, "r") as json_stream:
        # Import data from JSON into PDF form fields
        form.import_json(json_stream)

    # Save updated PDF
    form.save(outfile)

Python-Net: Import XML Data

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

XML is commonly used to store structured form data, making it a practical format for transferring values between systems. In this example, the Form facade from aspose.pdf.facades is used to load a PDF form and apply field values directly from an XML file. After importing the data, the updated PDF is saved as a new document.

Initialize pdf_facades.Form() to interact with PDF form fields.
Call ‘bind_pdf()’ to attach the PDF form template.
Use ‘FileIO()’ to access the XML file containing form data.
Call ‘import_xml()’ to populate PDF fields with values from the XML file.
Save the updated PDF.

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


# Import data from XML
def import_xml_to_pdf_fields(infile, datafile, outfile):
    """Import form data from XML file into PDF form fields."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Open XML file as stream
    with FileIO(datafile, "r") as xml_input_stream:
        # Import data from XML into PDF form fields
        pdf_form.import_xml(xml_input_stream)

    # Save updated PDF
    pdf_form.save(outfile)

Python-Net: Replace XFA Data

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

XFA (XML Forms Architecture) forms store their data in XML format within the PDF structure. In this example, the Form facade from the aspose.pdf.facades module is used to bind a PDF and replace its existing XFA dataset using an external XML stream. After applying the new data, the updated PDF is saved as a separate file.

Initialize pdf_facades.Form() to manage XFA form data.
Call ‘bind_pdf()’ to attach the PDF containing XFA forms.
Use ‘FileIO()’ to read the XFA XML file.
Call ‘set_xfa_data()’ to update the PDF with new XFA content.
Save the updated Document.

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


# Replace from XFA data
def replace_xfa_data(infile, datafile, outfile):
    """Import form data from XFA file into PDF form fields."""
    # Create Form object
    form = pdf_facades.Form()

    # Bind PDF document
    form.bind_pdf(infile)

    # Open XFA file as stream
    with FileIO(datafile, "r") as xfa_stream:
        # Import data from XFA into PDF form fields
        form.set_xfa_data(xfa_stream)

    # Save updated PDF
    form.save(outfile)