The W3C validator ensures cross-platform compatibility and accessibility through correct coding best practices. Learn how to use it here.

The web's governing body has launched a new validation tool called Unicorn that checks the quality of your website's code against multiple web standards at once.

The MarkUp Validation Service checks for compliance with different HTML versions and the emerging XHTML standard—an evolutionary change to HTML markup that's XML-compliant.

However, the Web developer and design communities have called for the W3C to renew its commitment to HTML by adding new features, officials with the organization said.

It is the latest standard of HTML technology that supports the world's Internet "HTML5"Was released as a recommendation.

The MarkUp Validation Service checks for compliance with different HTML versions and the emerging XHTML standard—an evolutionary change to HTML markup that's XML-compliant.