Set Field Appearance

PDF form fields support appearance flags that control visibility, printability, and interactivity. Using Aspose.PDF for Python, developers can programmatically modify these flags for specific form fields.

Using the FormEditor class, developers can modify these flags to hide, show, or customize the behavior of form fields in an interactive PDF.

1. Open an existing PDF document.
2. Create a FormEditor object.
3. Set the appearance of the field named “First Name” to invisible.
4. Save the updated document.

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

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

from config import set_license, initialize_data_dir


def set_field_appearance(infile, outfile):
    # Open document
    doc = ap.Document(infile)

    # Create FormEditor object
    form_editor = pdf_facades.FormEditor(doc)

    # Set field appearance to invisible
    if not form_editor.set_field_appearance(
        "First Name", ap.annotations.AnnotationFlags.INVISIBLE
    ):
        raise Exception(
            "Failed to set field appearance. Field may not support appearance flags."
        )

    # Save updated document
    form_editor.save(outfile)