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  3. XML Validator

XML Validator

Validate XML syntax and check for errors

Related Tools

  • XML Formatter - format valid XML
  • XML Beautifier - prettify XML
  • JSON Validator - validate JSON
  • YAML Validator - validate YAML

How to Use XML Validator

  1. Paste your XML

    Enter the XML content you want to validate.

  2. Check validity

    See validation results with any syntax errors highlighted and explained.

  3. Fix errors

    Use the error messages to correct issues and re-validate your XML.

Frequently Asked Questions

Is the XML Validator free to use?
Yes, the XML Validator is completely free with no limitations. Validate as much XML as you need without any registration or restrictions.
Is my XML data private during validation?
Yes, all XML validation happens locally in your browser using JavaScript. Your XML is never sent to any server, making it safe to validate sensitive configuration files, API responses, or proprietary data.
What does the XML Validator check for?
The validator checks that your XML is well-formed according to XML specifications. This includes proper tag nesting, matching opening and closing tags, correct attribute syntax, proper encoding declarations, and valid character references.
What is the difference between well-formed and valid XML?
Well-formed XML follows basic XML syntax rules (proper nesting, matching tags, etc.). Valid XML additionally conforms to a schema (XSD, DTD, or RelaxNG) that defines allowed elements and attributes. This tool checks for well-formedness, which is required before schema validation.
How do I fix common XML validation errors?
Common fixes include: ensuring all tags have matching closing tags, properly escaping special characters (& as &amp;, < as &lt;), using quotes around attribute values, and ensuring there is exactly one root element. The validator provides specific error messages to guide you.