Q: Is my XML data secure?
Yes. All validation happens entirely in your browser using the built-in DOMParser API. No data is ever sent to any server.
Q: What does "well-formed" mean?
A well-formed XML document follows all XML syntax rules: proper tag nesting, matching open/close tags, correct attribute quoting, and a single root element.
Q: Does it validate against a DTD or XSD schema?
This tool checks if XML is well-formed (syntactically correct). For DTD or XSD schema validation, you would need a dedicated schema validator.
Q: What types of errors does it detect?
It detects unclosed tags, mismatched tags, invalid characters, missing root elements, incorrect attribute syntax, and other XML well-formedness violations.
Q: Does it support XML namespaces?
Yes. The DOMParser handles XML namespaces correctly, so namespace-prefixed elements and attributes are validated properly.