Welcome to CSE HTML Validator!

CSE HTML Validator for Microsoft Windows is the most powerful, easy to use, user configurable, and all-in-one HTML, XHTML, CSS, link, spelling, and accessibility checker available. CSE HTML Validator helps eliminate website problems that cause visitors to leave your website. It increases your productivity and saves you time and money. THOUSANDS of registered users use CSE HTML Validator, including web professionals, webmasters, corporations, government agencies, individuals, teachers, students, and non-profit organizations.

Unlike many other HTML checkers and validators, CSE HTML Validator features an unusually powerful custom syntax checking engine that is specifically designed to check HTML, XHTML, and CSS. It also includes an integrated editor so you can make changes to your documents right inside of CSE HTML Validator.

To begin, see the topics under this Getting Started chapter. We recommend that you begin with Validating Local Documents.

And don't forget to check out the Why Validate topic if you think it's not worth your time to validate your documents.