XML Formatter & Validator

Paste XML to instantly validate, pretty-print or minify it. Everything runs locally in your browser using the native DOM parser — nothing is uploaded or stored.

How to use this XML formatter

Paste or type any XML document into the input box above, then click Format / Beautify to get a clean version indented 2 spaces per nesting level, or Minify to strip all whitespace between tags for compact storage or transmission. The tool validates your XML using the browser's built-in parser first — if it's malformed, you'll see exactly what the parser objected to instead of a formatted (but wrong) result.

Why validate and format XML?

XML is still widely used for configuration files, SOAP APIs, RSS/Atom feeds, SVG graphics, and data interchange between enterprise systems. Unlike JSON, XML has stricter well-formedness rules — every opening tag needs a matching closing tag (or a self-closing slash), attribute values must be quoted, and certain characters like & and < must be escaped inside text content. A single unclosed tag or unescaped ampersand will break parsing entirely. Pretty-printing also makes deeply nested XML far easier to read and debug than a single unbroken line, while minifying strips unnecessary whitespace before sending it over the wire.