Validate HTML First, you should validate your HTML with either an online HTML validator or an off-line HTML validator. Online HTML Validators W3C HTML Validator Web Design Group HTML Validator CSE HTML Validator Lite Online Validator Offline HTML Validators HTML Tidy W3C Markup Validator (Unix only) Ensuring that your HTML is 100% standards compliant will give your web page the best chances of being rendered properly in the majority of web browsers. Test Against Popular Web Browsers Next, you should manually test your pages with popular web browsers. The most Read More