Code Compliance is a free Chrome add-on developed by James Crooke. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This handy tool allows users to easily check a web page's code compliance and identify any errors or warnings.

With Code Compliance, users can simply click a button to initiate the code compliance check. The add-on then provides a breakdown of errors and warnings, line by line. This makes it easy for developers and designers to quickly identify and address any issues in their HTML code.

One of the key advantages of Code Compliance is its versatility. It can be used on any website, whether it's live or still in development. This makes it an invaluable tool for anyone involved in web development, from beginners to experienced professionals.

Code Compliance relies on the W3C Markup Validator Web Service API to perform its code compliance checks. This ensures accurate and reliable results, giving users confidence in the quality of their web pages.

Overall, Code Compliance is a user-friendly and essential tool for web developers and designers. Its ability to quickly identify code errors and warnings makes it a valuable addition to any development workflow.