Mada Accessibility & AT Glossary

W3C Markup Validation Service

W3C Markup Validation Service

How to pronounce:
ˈdʌblju(ː)3siː ˈmɑːkˈʌp ˌvælɪˈdeɪʃən ˈsɜːvɪs

W3C Markup Validation Service
Definition:

is a free service by W3C that helps check the validity of Web documents for well-formed markup.