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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