👀 Views: 40 💬 Answers: 1 📅 Created: 2025-06-30

selenium webdriver headless-chrome Python

I need some guidance on I can't seem to get I've been researching this but I tried several approaches but none seem to work... I've been banging my head against this for hours. I'm sure I'm missing something obvious here, but I'm currently using Selenium WebDriver (version 4.5.0) with headless Chrome to run automated tests for a web application. My tests include capturing screenshots under specific conditions. However, when I set a custom user agent for the headless Chrome instance, the screenshots are coming out blank. Here's the code snippet where I configure the driver: ```python from selenium import webdriver from selenium.webdriver.chrome.service import Service from selenium.webdriver.chrome.options import Options chrome_options = Options() chrome_options.add_argument('--headless') chrome_options.add_argument('--disable-gpu') chrome_options.add_argument('--user-agent=MyCustomUserAgent/1.0') service = Service('/path/to/chromedriver') driver = webdriver.Chrome(service=service, options=chrome_options) driver.get('https://example.com') # Wait for the page to load completely WebDriverWait(driver, 10).until( EC.presence_of_element_located((By.TAG_NAME, 'body')) ) # Attempt to capture screenshot screenshot = driver.save_screenshot('screenshot.png') ``` I have confirmed that the page is fully loaded, and I can see the content when I run the tests with the browser UI. However, with the headless mode and the custom user agent, the resulting `screenshot.png` is empty. I also tried varying the timeout value in the `WebDriverWait`, but that did not resolve the scenario. When I run the same code without setting the user agent, the screenshots work fine. I suspect that the custom user agent might be causing the rendering scenario, but I’m not sure how to debug this. Has anyone faced a similar scenario, or does anyone have suggestions on how to troubleshoot this further? Any insights on best practices for using headless Chrome with custom configurations would be greatly appreciated! For context: I'm using Python on Ubuntu. How would you solve this? This is part of a larger application I'm building. How would you solve this? This is part of a larger application I'm building. Any ideas what could be causing this? This is part of a larger web app I'm building. This is my first time working with Python 3.9. What are your experiences with this? What are your experiences with this? I'm on Ubuntu 20.04 using the latest version of Python. What would be the recommended way to handle this?