Instantly pretty-print, validate, and minify any XML
The XML Formatter is a free browser-based tool that pretty-prints raw or minified XML with your choice of indentation — 2 spaces, 4 spaces, or tabs. It uses the browser's native DOMParser to validate your XML structure instantly, reporting exact parse errors without ever sending your data to a server. You can also minify XML to remove whitespace for production use.
It uses the browser's built-in DOMParser with the 'application/xml' MIME type. If the XML is malformed, the parser inserts a <parsererror> element which the tool detects and displays as a human-readable error message.
No. All processing happens entirely in your browser using native JavaScript APIs. Your data never leaves your device.
Pretty-print adds newlines and indentation to make nested elements readable for humans. Minify strips all unnecessary whitespace between tags, producing the smallest possible output suitable for data transfer or storage.
Yes. The formatter preserves CDATA sections (<![CDATA[...]]>), XML comments (<!-- ... -->), and namespace-prefixed elements and attributes faithfully during both pretty-printing and minification.