XML Validator

Validate XML files online for free. Check syntax, structure, and well-formedness with our browser-based XML validator. No uploads required, instant results.

Download sample XML file

Validation Options

Output Options

XML Input

Validation Results

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XML Validation Results

Enter XML data to validate its structure and syntax.

Using the XML Validator

  1. 1.Enter your XML data in the input box, or use the "Upload" button to select an XML file
  2. 2.Configure validation options like well-formedness checks and tag balance validation
  3. 3.Enable strict mode for additional checks on empty elements and mixed content
  4. 4.Click "Validate XML" to check your document for errors and warnings
  5. 5.Review the validation results and fix any issues identified

About XML Validation

XML (eXtensible Markup Language) validation ensures your documents are well-formed and follow proper syntax rules. This tool checks for tag balance, proper nesting, namespace declarations, and other XML structural requirements.

This tool is particularly useful when:

  • You need to verify XML files before importing into applications or databases
  • You want to check XML configuration files for syntax errors
  • You're validating XML data exports or API responses
  • You need to ensure XML documents are well-formed for processing
  • You want to identify and fix structural issues in XML documents