XML Formatter & Validator
Format, validate and beautify XML documents online. Supports minification and XML to JSON conversion.
💡 Try these examples:
About XML Formatter & Validator
Paste any XML document and get a properly indented, validated output. Detects common XML syntax errors (unclosed tags, missing quotes, invalid characters) and reports the exact error position. Also minifies XML for production use. All processing happens in your browser using the native DOMParser — your XML data stays private.
All processing happens entirely in your browser using modern web APIs. Nothing is uploaded to our servers — your data stays local and private. Free to use forever, with a Pro plan for power users who want an ad-free experience and API access.
Common use cases
- Formatting and validating XML configuration files (Maven pom.xml, Android AndroidManifest.xml)
- Beautifying SOAP API request/response XML for debugging
- Validating XML before submitting to an API or processing pipeline
- Minifying XML config files for embedded systems or transmission
- Formatting RSS/Atom feed XML for readability
How it works
Uses the browser's DOMParser to parse the XML string into a DOM tree. If parsing fails, the parser returns an XML document containing a parsererror element with the error details. For formatting, the DOM tree is serialized with a custom recursive serializer that adds newlines and indentation. For minification, whitespace-only text nodes are removed.