Answer by Super Kai - Kazuya Ito for Webdriver Screenshot in Python

In Django(Python), you can take the screenshots of Django Admin on headless Google Chrome, Microsoft Edge and Firefox as shown below. *I use pytest-django and selenium and my answer explains how to do this on the headless browsers together:

<Google Chrome>

import pytestfrom selenium import webdriverdef take_screenshot(driver, name):    os.makedirs(os.path.join("screenshot", os.path.dirname(name)), exist_ok=True)    driver.save_screenshot(os.path.join("screenshot", name))def test_1(live_server):    options = webdriver.ChromeOptions()    options.add_argument("--headless=new")    driver = webdriver.Chrome(options=options)    driver.set_window_size(1024, 768)    driver.get(("%s%s" % (live_server.url, "/admin/")))    take_screenshot(driver, "admin/chrome.png")    assert "Log in | Django site admin" in driver.title

<Microsoft Edge>

import pytestfrom selenium import webdriverdef take_screenshot(driver, name):    os.makedirs(os.path.join("screenshot", os.path.dirname(name)), exist_ok=True)    driver.save_screenshot(os.path.join("screenshot", name))def test_1(live_server):    options = webdriver.EdgeOptions()    options.add_argument("--headless=new")    driver = webdriver.Edge(options=options)    driver.set_window_size(1024, 768)    driver.get(("%s%s" % (live_server.url, "/admin/")))    take_screenshot(driver, "admin/edge.png")    assert "Log in | Django site admin" in driver.title

<Firefox>

import pytestfrom selenium import webdriverdef take_screenshot(driver, name):    os.makedirs(os.path.join("screenshot", os.path.dirname(name)), exist_ok=True)    driver.save_screenshot(os.path.join("screenshot", name))def test_1(live_server):    options = webdriver.FirefoxOptions()    options.add_argument("-headless")    driver = webdriver.Firefox(options=options)    driver.set_window_size(1024, 768)    driver.get(("%s%s" % (live_server.url, "/admin/")))    take_screenshot(driver, "admin/firefox.png")    assert "Log in | Django site admin" in driver.title