Use PDFTK and Convert to convert specified pages from a pdf file into images

pdf_to_image.py

import os
import subprocess

def extract_pages_from_pdf(source_file, page_range, output_file):
    try:
        subprocess.run(['pdftk', source_file, 'cat', page_range, 'output', output_file], check=True, capture_output=True, text=True)
    except subprocess.CalledProcessError as e:
        print(f"Error during 'pdftk' execution:\n{e.stderr}")
        exit(1)

def convert_pdf_to_images(pdf_file, output_prefix):
    try:
        # must input the full path of the command covert because there's another 'convert' in the system directory.
        subprocess.run(['[absolute path of convert.exe]', '-density','300', pdf_file, f"{output_prefix}_%03d.png"], check=True, capture_output=True, text=True)
    except subprocess.CalledProcessError as e:
        print(f"Error during 'convert' execution:\n{e.stderr}")
        exit(1)

def main():
    # Prompt user for inputs
    input_pdf_filename = input("Enter the filename of the input PDF (in the current directory): ").strip()
    pages_to_extract = input("Enter the range of pages to extract (e.g., 1-3, 5, 7-9): ").strip()

    # Determine the extracted PDF filename and image prefix
    base_filename, _ = os.path.splitext(input_pdf_filename)
    extracted_pdf_filename = f"{base_filename}_extracted.pdf"
    output_image_prefix = f"{base_filename}_image"

    # Extract pages from the source PDF
    extract_pages_from_pdf(input_pdf_filename, pages_to_extract, extracted_pdf_filename)
    
    # Convert the extracted pages to images
    convert_pdf_to_images(extracted_pdf_filename, output_image_prefix)

    print("Done!")

if __name__ == "__main__":
    main()