How to Change Page Size of PDF using Python. For more information: https://kb.aspose.com/pdf/python/how-to-change-page-size-of-pdf-using-python/

How to Change Page Size of PDF using Python.py

import aspose.pdf as pdf

# Source license and PDF files directory path
filePath = "C://Words//"

# Load the license in your application to modify the PDF page size
odpToPptxLicense = pdf.License()
odpToPptxLicense.set_license(filePath + "Conholdate.Total.Product.Family.lic")

# Open the source PDF file from the disk
pdfDocument = pdf.Document(filePath+"Output.pdf")

# Access the PDF page collection
pageCollection = pdfDocument.pages

# Access the second page
srcPage = pageCollection[1]

# Setting the page size as an Envelop (4.13 x 9.49 in)
# In Aspose.PDF, 1 inch = 72 points
# Therefore, Envelop  dimensions in points will be (297.64, 683.15)
srcPage.set_page_size(297.64, 683.15)

# Save the PDF with the modified page size on the disk
pdfDocument.save(filePath + "GeneratedPdf.pdf")

print("Process completed")