How to Disable CSS in Selenium Using ChromeOptions?

How to Disable CSS in Selenium Using ChromeOptions

When attempting to improve page loading speed by disabling CSS, users may encounter difficulties. While images and JavaScript can be disabled using specific options, simply changing the preference to disable CSS may not work.

Solution:

To disable CSS in Chrome using Selenium, a comprehensive approach is required, involving the modification of multiple preferences:

prefs = {'profile.default_content_setting_values': {'cookies': 2, 'images': 2, 'javascript': 2, 
                            'plugins': 2, 'popups': 2, 'geolocation': 2, 
                            'notifications': 2, 'auto_select_certificate': 2, 'fullscreen': 2, 
                            'mouselock': 2, 'mixed_script': 2, 'media_stream': 2, 
                            'media_stream_mic': 2, 'media_stream_camera': 2, 'protocol_handlers': 2, 
                            'ppapi_broker': 2, 'automatic_downloads': 2, 'midi_sysex': 2, 
                            'push_messaging': 2, 'ssl_cert_decisions': 2, 'metro_switch_to_desktop': 2, 
                            'protected_media_identifier': 2, 'app_banner': 2, 'site_engagement': 2, 
                            'durable_storage': 2}}

Additional ChromeOptions:

For a more robust experience, consider adding these options:

• add_argument("start-maximized") - Maximize the browser window.
• add_argument("disable-infobars") - Hide Chrome's info bars.
• add_argument("--disable-extensions") - Disable browser extensions.

Example Usage:

from selenium import webdriver

options = webdriver.ChromeOptions()
options.add_experimental_option('prefs', prefs)
options.add_argument("start-maximized")
options.add_argument("disable-infobars")
options.add_argument("--disable-extensions")
driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
driver.get('https://play.google.com/store')

This will disable all preferences and start Chrome without CSS, providing improved loading times.

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