Using Selenium and Chrome driver (with Dev tools) to download a page as a PDF

download-pdf.py

from selenium import webdriver
from selenium.webdriver.chrome.service import Service as ChromeService
from webdriver_manager.chrome import ChromeDriverManager
import base64

options = webdriver.ChromeOptions()
options.add_argument('--headless')

url = "https://google.com"

with webdriver.Chrome(service=ChromeService(ChromeDriverManager().install()), options=options) as driver:
    driver.get(url)

    pdf = driver.execute_cdp_cmd("Page.printToPDF", {
        "printBackground": True,
        "paperWidth": 8.5,
        "paperHeight": 11,
    })

    with open("file.pdf", "wb") as f:
        f.write(base64.b64decode(pdf['data']))

Needs pip install selenium webdriver-manager chromedriver-py

Documentation on Page.printToPDF here: https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-printToPDF