Capture Fullpage Screenshot

This is not a bug, but rather a new feature. Often the browser page is longer that is shown and the user needs to scroll down to see the rest of the page.

Robot Framework often takes a screenshot on failure, but the screenshot captured only shows half of the page and might not include the problematic area. It would be nice to have a keyword that captures a whole length image.

This is my python script to implement such functionality

def capture_fullpage_screenshot(url):
    """ Creating a Full-Page screenshot.

    Use this keyword for debugging purposes.
    Creates an image called full_page_screenshot.png.
    """
    options = webdriver.ChromeOptions()
    options.add_argument("start-maximized")
    options.add_argument("enable-automation")
    options.add_argument("--headless")
    options.add_argument("--no-sandbox")
    options.add_argument("disable-infobars")
    options.add_argument("--disable-extensions")
    options.add_argument("--disable-gpu")
    driver = webdriver.Chrome(options=options)
    current_window = driver.get_window_size()

    driver.get(url)

    time.sleep(12)

    height = driver.execute_script("return document.body.scrollHeight")
    driver.set_window_size(1920, height)
    driver.save_screenshot("full_page_screenshot.png")

    driver.set_window_size(current_window["width"], current_window["height"])

However, it is not yet properly working, as it does not work inside docker. And it has a hardcoded file name.

[pekkaklarck]

This functionality would be nice, but I see various problems in the proposed implementation:

• Not sure would the newly opened browser see the exact same page than the original one. The new browser would also miss possible custom configuration that the original had.
• 12 second sleep.

[aaltat]

Knowing when to webapp is ready is actually quite difficult problem and therefore removing the sleep may require application specific logic. I would still lean to use the Selenium API and make an implementation based on that, even when it works only with Firefox. But it’s good that you got your keyword improved and I bet you learned lot of things.