XML Validator

Validate XML syntax, format and beautify XML data

Enter XML to Validate

Validation Results

No XML validated yet. Enter XML and click "Validate XML".

How to use this XML Validator:

  • Paste or type your XML into the input area
  • Click Validate XML to check for syntax errors
  • Use Format to beautify your XML with proper indentation
  • Use Minify to remove all unnecessary whitespace
  • View validation results and formatted output

About XML Validation:

  • XML (eXtensible Markup Language) is a markup language for structured data
  • Valid XML must have:
    • Properly nested and closed tags
    • A single root element
    • Properly escaped special characters
    • Valid attribute syntax (quoted values)
  • Well-formed XML may include:
    • XML declaration ()
    • Document Type Definition (DTD) or XML Schema
    • Comments ()
    • CDATA sections for unparsed data

All processing is done in your browser - your XML data never leaves your computer