Welcome to CSE HTML Validator!

CSE HTML Validator for Microsoft Windows is a powerful, easy to use, user configurable, and all-in-one HTML, XHTML, and CSS checker that includes a link checker, spell checker, accessibility checker, built-in editor, and also checks for search engine issues. CSE HTML Validator helps eliminate website problems that cause visitors to leave websites. It increases productivity and saves time and money. THOUSANDS of registered customers 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. The built-in editor lets you can make changes to your documents right inside of CSE HTML Validator.

NOTE: Depending on what edition is being used, some features described in the documentation may be different or not available.

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

Other topics of interest may be the Shortcut Quick Reference Guide and Editor Feature Overview.

And don't forget to check out the Why Validate topic for why it's worth the time to validate documents.