XML Validator & Formatter
Paste or upload XML to validate well-formedness, format with proper indentation, or minify. Errors show exact line numbers. All processing happens in your browser.
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What is XML?
XML (eXtensible Markup Language) is a markup language for encoding documents in a format that is both human-readable and machine-readable. It is widely used for configuration files, data interchange, web services (SOAP), document formats (SVG, XHTML), and more.
Learn more about XML format →Common XML Errors
- • Unclosed tags:
<tag>without</tag> - • Mismatched tags:
<a>...</b> - • Missing root element: XML must have exactly one root
- • Unescaped special characters: Use
&for & - • Invalid attribute syntax: Attributes must be quoted