XML Formatter & Beautifier — Free Online XML Pretty Printer
Format, prettify, and validate XML instantly — converts minified XML to readable indented output.
Jump to tool ↓Frequently Asked Questions
XML Formatting and Validation
XML (eXtensible Markup Language) is ubiquitous in enterprise software, web services, and configuration systems. Whether you're working with SOAP API responses, Maven or Gradle build files, Android layouts, Spring configuration, or RSS feeds, well-formatted XML is essential for readability and debugging.
This formatter uses the browser's built-in XML parser (DOMParser) to validate structure, then re-serializes with consistent 2-space indentation. The parser enforces strict XML rules: all tags must be closed, attribute values must be quoted, special characters must be escaped, and there must be exactly one root element.
Common XML formatting tasks: making API responses readable for debugging, normalizing inconsistent indentation in configuration files, and validating XML structure before submitting to downstream services. The formatted output is syntactically equivalent to the input — only whitespace between elements is modified.
Standards & References
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