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XML Document
XSD Schema (optional)
All ToolsValidate XML with XSD
Validate XML with XSD
Validate XML well-formedness and check structure against an XSD schema. Browser-based.
What is Validate XML with XSD?
Validate XML is a free online tool that checks if your XML is well-formed and performs basic structural validation against an optional XSD schema. It uses the browser's built-in DOMParser for well-formedness checks and a custom element/attribute checker for XSD validation.
How It Works
XML well-formedness is checked using the browser's DOMParser (application/xml). If the XML contains a <parsererror> element in the result, the XML is invalid and the error message is extracted. For XSD validation, the tool parses the XSD to extract expected element names and checks them against the XML structure.
Key Benefits
- Validates XML well-formedness using the browser DOMParser
- Basic XSD schema validation (element names and nesting)
- Clear error messages with details
- Optional XSD — validate XML alone or with a schema
- 100% client-side — no files uploaded to any server
Frequently Asked Questions
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