Mada Accessibility & AT Glossary

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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.