XML Validator — Well-Formed & XSD Schema Check
Validate XML syntax instantly with precise line and column errors. Optionally validate against an XSD schema using libxml2 WebAssembly — all in your browser.
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XML document
0 B
Well-formedness
Waiting for inputAbout this tool
Well-formed checkXSD validationError detailsDocument statsPrivate
How to use
- Paste your XML document in the left panel.
- Well-formedness is checked automatically as you type.
- Enable XSD validation and paste your schema.
- Review schema errors with line numbers and messages.
Examples
Syntax error
<root><item></root>
Error: mismatched end tag (line 1)