HTML Validation

The W3C HTML Validator is a powerful tool that should be taken advantage of while developing websites. The validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML. This will help your SEO, and help identify best HTML practices.

Visit the HTML W3C Validator

 

CSS Validation

Similar to the HTML Validator, it is important to validate your CSS code. The link below will allow you to do that via file upload, link, or direct input

Visit the CSS W3C Validator