To effectively block Google Ads from injecting JavaScript into your web pages, implement a Content Security Policy (CSP). This security standard allows you to specify which resources can be executed on your web page, preventing any unauthorized scripts. Set up a CSP by adding the response header Content-Security-Policy with a value like script-src 'self' to only allow scripts hosted on your own domain, blocking external scripts like those from Google Ads.

Additionally, consider using browser extensions such as uBlock Origin or Adblock Plus, which can filter out and block scripts from known ad servers. For a more technical approach, modify your server settings to strip out unwanted script tags or redirect ad server requests.

Each method has implications for site functionality and user experience, so it's crucial to choose an approach that balances security with usability. Ensure to test any changes in a development environment before applying them live to avoid unintended disruptions.

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