About the XML Validator
Find mismatched and unclosed tags and other well-formedness errors, with the line number where possible.
XML Validator
Check that XML is well-formed: matching tags, one root element and properly closed markup.
- Paste your input
- Choose the options
- Copy the output
Runs in your browser. Your data and files never leave your device.
Frequently asked questions
Does it validate against an XSD or DTD?
No — it checks well-formedness, which every XML document must pass before schema validation.
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