XML Tools Tool
XML Validator & Linter
Validate XML files and inspect syntactic or parsing hierarchy issues. Run 100% locally in your browser.
XML Validation
💡 Frequently Asked Questions
Q: What does it mean for XML to be "well-formed"?
A: Well-formed XML adheres to the structural rules of the XML specification: tags must have closing pairs, tags cannot overlap, attribute values must be enclosed in quotes, and there must be exactly one root tag wrapping the document.