Documentation – PDF Metadata

Python-Net: Clear PDF Metadata

Thu, 05 Mar 2026 00:00:00 +0000

PDF often contain metadata such as title, author, keywords, creation dates, and custom fields. In some scenarios, you may want to remove all metadata from a PDF, for example before distribution or archival. Aspose.PDF provides the clear_info() method to remove all metadata easily. After clearing, you can save the PDF using the save() method.

Load the PDF file.
Clear all metadata.
Save the clean PDF.

import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades
from io import FileIO

import sys
from os import path

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

from config import set_license, initialize_data_dir


def clear_pdf_metadata(infile, outfile):

    # Get PDF information
    pdf_info = pdf_facades.PdfFileInfo(infile)

    # Clear PDF metadata
    pdf_info.clear_info()

    # Save updated metadata
    pdf_info.save(outfile)

Python-Net: Get PDF Metadata

Thu, 05 Mar 2026 00:00:00 +0000

PDF documents often contain valuable metadata that describes document content, authorship, and permissions. Aspose.PDF provides a convenient API to retrieve both standard and custom metadata properties. This code snippet how to use the PdfFileInfo class to inspect PDF files programmatically, including step-by-step examples in Python.

Load the PDF file.
Retrieve standard metadata.
Check PDF status and security.
Retrieve custom metadata.

import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades
from io import FileIO

import sys
from os import path

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

from config import set_license, initialize_data_dir


def get_pdf_metadata(infile):

    # Get and display PDF information
    pdf_info = pdf_facades.PdfFileInfo(infile)
    print(f"Subject: {pdf_info.subject}")
    print(f"Title: {pdf_info.title}")
    print(f"Keywords: {pdf_info.keywords}")
    print(f"Creator: {pdf_info.creator}")
    print(f"Creation Date: {pdf_info.creation_date}")
    print(f"Modification Date: {pdf_info.mod_date}")

    # Check PDF status
    print(f"Is Valid PDF: {pdf_info.is_pdf_file}")
    print(f"Is Encrypted: {pdf_info.is_encrypted}")
    print(f"Has Open Password: {pdf_info.has_open_password}")
    print(f"Has Edit Password: {pdf_info.has_edit_password}")
    print(f"Is Portfolio: {pdf_info.has_collection}")

    # Retrieve and display a specific custom attribute
    reviewer = pdf_info.get_meta_info("Reviewer")
    print(f"Reviewer: {reviewer if reviewer else 'No Reviewer metadata found.'}")

Python-Net: Save Metadata with XMP

Thu, 05 Mar 2026 00:00:00 +0000

PDF metadata can be stored in multiple ways, and XMP is the modern, standardized method for embedding metadata inside a PDF file. Using Aspose.PDF, you can update standard fields like Title, Subject, Keywords, and Creator, and then save them in XMP format to ensure wider compatibility and future-proofing. This method is recommended over legacy metadata storage methods.

Load the PDF file.
Set standard metadata fields.
Save metadata in XMP format.

import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades
from io import FileIO

import sys
from os import path

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

from config import set_license, initialize_data_dir


def save_info_with_xmp(infile, outfile):

    # Get PDF information
    pdf_info = pdf_facades.PdfFileInfo(infile)

    # Set PDF metadata
    pdf_info.subject = "Aspose PDF for Python via .NET"
    pdf_info.title = "Aspose PDF for Python via .NET"
    pdf_info.keywords = "Aspose, PDF, Python, .NET"
    pdf_info.creator = "Aspose Team"

    # Save updated metadata
    pdf_info.save_new_info_with_xmp(outfile)

Python-Net: Set PDF Metadata

Thu, 05 Mar 2026 00:00:00 +0000

PDF documents can contain both standard metadata (Title, Subject, Keywords, Creator, Author) and custom metadata stored as XMP properties. Aspose.PDF provides a simple API to modify these properties in Python. This guide covers how to update these fields and save the modified PDF file using the PdfFileInfo class.

Load the PDF file.
Update standard metadata.
Add or update custom metadata.
Save updated metadata.

import aspose.pdf as ap
import aspose.pdf.facades as pdf_facades
from io import FileIO

import sys
from os import path

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

from config import set_license, initialize_data_dir


def set_pdf_metadata(infile, outfile):

    # Get PDF information
    pdf_info = pdf_facades.PdfFileInfo(infile)

    # Set PDF metadata
    pdf_info.subject = "Aspose PDF for Python via .NET"
    pdf_info.title = "Aspose PDF for Python via .NET"
    pdf_info.keywords = "Aspose, PDF, Python, .NET"
    pdf_info.creator = "Aspose Team"

    pdf_info.set_meta_info("CustomKey", "CustomValue")

    # pdf_info.save_new_info(outfile)
    # Is obsolete, use save() method instead

    # Save updated metadata
    pdf_info.save(outfile)