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XML Formatter

Format, validate, and beautify XML

Input
Output
About This Tool
The XML Formatter & Validator instantly transforms messy or minified XML into clean, readable code with proper indentation. It validates your XML against the W3C specification, catching syntax errors such as unclosed tags, mismatched elements, and malformed attributes.
All processing runs entirely in your browser using the native DOMParser API — no data is ever sent to a server. You can safely format sensitive configuration files or internal API responses without any privacy concerns.
How to Use
  1. Paste your XML into the input panel.
  2. Choose your preferred indentation (2 or 4 spaces).
  3. Click Format to format and validate, or Minify to produce compact XML.
  4. Click Copy to copy the formatted output to your clipboard.
Use Cases
Developers format XML API responses, Maven pom.xml, Android AndroidManifest.xml, SOAP envelopes, SVG source, and configuration files. QA engineers debug XML payloads from test suites. Data engineers validate data feeds before pipeline ingestion. The minify feature reduces payload size for production XML APIs.
FAQ
  • What XML versions are supported? — XML 1.0 and 1.1, including all standard entities, CDATA sections, processing instructions, and namespace declarations.
  • Does it preserve namespaces? — Yes. All namespace prefixes and declarations (xmlns:) are preserved exactly as provided.
  • Is my data safe? — Yes. All parsing and formatting happens locally in your browser. No XML data is ever transmitted to any server.