XML Formatter & Validator

Formats XML into readable, indented markup and validates its syntax.

Lilu Baba's XML Formatter uses your browser's native XML parser to validate syntax, then reformats your XML with clean, consistent indentation.

How to use this tool

  1. Paste your XML.
  2. It's validated using your browser's built-in XML parser and reformatted with clean indentation instantly.

XML Formatter & Validator — frequently asked questions

Using the browser's built-in DOMParser, the same reliable engine browsers use to parse XML natively — not a custom parser.

An error message is shown instead of formatted output, so you know to check your syntax.