XML Formatter & Validator

Pretty-print and validate XML in the browser with selectable indent.

Paste any XML and get a clean, indented version. The tool uses your browser's built-in XML parser to validate the structure and reports parse errors. No server round-trip — everything runs locally.

Common use cases

  • Beautify SOAP requests, RSS feeds and Atom feeds for inspection
  • Validate XML config files (pom.xml, web.xml, build.xml) before committing
  • Inspect raw responses from legacy APIs that still return XML
  • Re-indent minified XML payloads pulled from network logs

Frequently asked questions

Is namespace XML supported?
Yes. The native DOMParser preserves namespaces and attributes during reformatting.
Will it validate against an XSD or DTD?
No — only well-formedness is checked. For schema validation use a dedicated tool like xmllint.
What happens with CDATA sections and comments?
Both are preserved in the formatted output.

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