XML Formatter & Validator

Format, validate, and pretty-print XML with proper indentation and error detection.

📐 How to Use

  1. Paste your XML into the input box.
  2. Click "Format" for pretty-printed, indented output.
  3. Click "Minify" to collapse it to a single line.
  4. Click "Validate Only" to check well-formedness without reformatting.

❓ Frequently Asked Questions

QDoes this validate against a schema (XSD)?
No — this checks that the XML is well-formed (correct syntax, matching tags, proper nesting), not that it conforms to a specific schema.
QCan it handle XML namespaces?
Yes — namespace prefixes and declarations are preserved during formatting and minification.
QIs my XML sent anywhere?
No — formatting and validation happen entirely in your browser using the native DOMParser API.

ℹ️ About This Tool

XML formatting uses the browser's built-in DOMParser to check well-formedness, then a custom indentation routine renders the formatted output. No external libraries are used.

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