XML Syntax Validator
Check your XML documents for syntax errors, well-formedness compliance, and parsing exceptions instantly in your browser.
Input XML Document
Validation Report
Ready
Check your XML documents for syntax errors, well-formedness compliance, and parsing exceptions instantly in your browser.
An XML syntax validator checks whether an XML document is well-formed. It identifies structural issues such as unclosed elements, invalid nesting, and malformed attributes.
Paste the XML document and run validation. Use the reported position to correct the first error, then validate again.
A well-formed document may still fail a separate schema rule. Use XSD validation when a specific schema is required.
Choose the source and destination formats deliberately. Similar-looking data can have different escaping, precision, or null-value rules after conversion.
Formats can represent types, dates, empty values, comments, and numeric precision differently. Inspect a representative output instead of assuming conversion is lossless.