Documentation – Filling Form Fields

Python-Net: Fill Text Fields

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

Programmatically filling text fields allows applications to reuse PDF templates and insert dynamic content without manual editing. In this example, the Form facade from aspose.pdf.facades is used to bind a PDF form and update multiple fields such as name, address, and email. After assigning values, the modified PDF is saved as a new document.

Initialize ‘pdf_facades.Form()’ to manage form field operations.
Use ‘bind_pdf()’ to attach the input PDF containing text fields.
Call ‘fill_field()’ to insert data into fields like name, address, and email.
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


# Fill Text Fields
def fill_text_fields(infile, outfile):
    """Fill text fields in PDF form."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Fill text fields by name
    pdf_form.fill_field("name", "John Doe")
    pdf_form.fill_field("address", "123 Main St, Anytown, USA")
    pdf_form.fill_field("email", "john.doe@example.com")

    # Save updated PDF
    pdf_form.save(outfile)

Python-Net: Fill Check Box Fields

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

The check box is commonly used in PDF forms to represent binary choices such as subscriptions or agreement confirmations. In this example, the Form facade from aspose.pdf.facades is used to access form fields and set their values to a selected state. After updating the check boxes, the filled PDF is saved as a new document.

Initialize ‘pdf_facades.Form()’ to manage form field interactions.
Use ‘bind_pdf()’ to attach the source PDF containing check box fields.
Call ‘fill_field()’ to mark fields like ‘subscribe_newsletter’ and ‘accept_terms’ as selected.
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


# Fill Check Box Fields
def fill_check_box_fields(infile, outfile):
    """Fill check box fields in PDF form."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Fill check box fields by name
    pdf_form.fill_field("subscribe_newsletter", "Yes")
    pdf_form.fill_field("accept_terms", "Yes")

    # Save updated PDF
    pdf_form.save(outfile)

Python-Net: Fill Radio Button Fields

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

Radio buttons allow users to select a single option from a predefined group, such as gender or preference fields. In this example, the Form facade from the aspose.pdf.facades module is used to bind the source PDF and assign a selected option by its index value. Once the desired option is chosen, the modified document is saved.

Initialize pdf_facades.Form() to manage PDF form fields.
Call ‘bind_pdf()’ to attach the PDF containing radio button fields.
Use ‘fill_field()’ to select the first option (index 0).
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


# Fill Radio Button Fields
def fill_radio_button_fields(infile, outfile):
    """Fill radio button fields in PDF form."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Fill radio button fields by name
    pdf_form.fill_field("gender", 0)  # Select male option (index 0)
    # pdf_form.fill_field("gender", 1) # Select female option (index 1)

    # Save updated PDF
    pdf_form.save(outfile)

Python-Net: Fill List Box

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

List box and multi-select fields allow users to choose one or multiple values from a predefined set of options. In this example, the Form facade from aspose.pdf.facades is used to access the PDF form and assign a selected value to the favorite_colors field. Once the desired option is selected, the updated document is saved.

Initialize ‘pdf_facades.Form()’ to manage and update form fields.
Call ‘bind_pdf()’ to attach the source PDF containing list box or multi-select fields.
Use ‘fill_field()’ to select a value from the available options.
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


# Fill List Box / Multi-Select Fields
def fill_list_box_fields(infile, outfile):
    """Fill list box and multi-select fields in PDF form."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Fill list box / multi-select fields by name
    pdf_form.fill_field("favorite_colors", "Red")

    # Save updated PDF
    pdf_form.save(outfile)

Python-Net: Fill Barcode Fields

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

Barcode fields in PDF forms allow encoded information to be stored and displayed visually as barcodes. In this example, the Form facade from the aspose.pdf.facades module is used to access form fields and assign a barcode value. Once the data is filled, the PDF is saved with the updated barcode content.

Initialize ‘pdf_facades.Form()’ to manage PDF form interactions.
Call ‘bind_pdf()’ to attach the PDF containing barcode fields.
Use ‘fill_field()’ to assign a barcode value.
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


# Fill Barcode Fields
def fill_barcode_fields(infile, outfile):
    """Fill barcode fields in PDF form."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Fill barcode fields by name
    pdf_form.fill_field("product_barcode", "123456789012")

    # Save updated PDF
    pdf_form.save(outfile)

Python-Net: Fill Fields by Name and Value

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

Filling form fields using a name–value collection allows developers to create scalable and flexible solutions for PDF form automation. In this example, the Form facade from aspose.pdf.facades is used to bind a PDF document and iterate through a dictionary of field data. Each entry is applied using the ‘fill_field method’, enabling efficient bulk updates to form fields.

Initialize ‘pdf_facades.Form()’ to work with interactive form fields.
Use ‘bind_pdf()’ to attach the source PDF document.
Create a dictionary containing field names and the values you want to insert.
Iterate through the dictionary and call ‘fill_field()’ for each entry.
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


# Fill Fields by Name and Value
def fill_fields_by_name_and_value(infile, outfile):
    """Fill PDF form fields by name and value."""
    # Create Form object
    pdf_form = pdf_facades.Form()

    # Bind PDF document
    pdf_form.bind_pdf(infile)

    # Fill fields by name and value
    fields = {
        "name": "Jane Smith",
        "address": "456 Elm St, Othertown, USA",
        "email": "jane.smith@example.com",
    }
    for field_name, value in fields.items():
        pdf_form.fill_field(field_name, value)

    # Save updated PDF using outfile
    pdf_form.save(outfile)