There are many specialized tools that will test a website and make sure it is following best practices (Google Lighthouse is an example). The problem is that you need to use dozens of tools to get a complete picture of your website’s health. In my research, I could not find any comprehensive website auditing tools. Additionally, very few of the tools that exist will proactively monitor your website for errors and notify you if something changes. This is why I built Validbot.com.
What tests would you like to see added to ValidBot?
– Jake Olefsky