Validator

A validator is a computer program used to check the validity or syntactical correctness of a fragment of code or document.

The term is commonly used in the context of validating HTML, CSS, and XML documents or RSS feeds, although it can be used for any defined format or language.

See also

• W3C Markup Validation Service
• CSE HTML Validator for Windows
• XML validation
• HTML Tidy

External links

• Validator @ Wikipedia