Most top-ranking websites fail HTML validation. Google explains why perfect code isn’t required, and what matters instead.

Thankfully, Google provides a variety of tools for detecting and avoiding malware on your business website and websites you visit. Check a Website URL Locate the URL of the site you want to scan ...

Even if you’re not familiar with the required HTML code, or if you can’t access the needed web files, you can take advantage of this simple implementation method using Google Tag Manager.