XML Validator
Validate XML documents for well-formedness. Get clear error messages, element and attribute statistics, and structure analysis — all in the browser.
What is XML Validation?
XML validation checks that a document is well-formed — meaning it follows the core XML syntax rules. Well-formed XML has a single root element, all tags are properly closed and nested, attribute values are quoted, and special characters are escaped. This tool validates well-formedness using the browser's native XML parser.
Common XML Errors
- Unclosed tags — every
<tag>needs a matching</tag> - Case mismatch —
<Item>and<item>are different tags - Unquoted or missing attribute values — must be
id="value" - Unescaped special characters — & must be written as &
Frequently Asked Questions
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