XML Formatter & Validator
Sur XML Formatter & Validator
Our free online XML Formatter & Validator lets you beautify messy XML with proper indentation, minify it down for production use, or validate it against your browser's own XML parser to catch syntax errors instantly.
Everything runs directly in your browser - paste your XML, format or validate it, and copy the result. No data is ever uploaded to a server, making it safe for XML containing sensitive configuration or data.
How to Use the XML Formatter & Validator
- Paste your XML into the input box, however messy or minified it currently is
- Choose to format it with indentation, minify it to a single compact block, or validate it
- Review any syntax error the browser's XML parser reports, including the approximate location of the problem
- Copy the formatted, minified, or validated output back to your clipboard
- Paste the result into your config file, API payload, or project source
Backend developers use the formatter to make sense of an API response or configuration file that arrived as a single unbroken line. Integration engineers use the validator to catch a missing closing tag or malformed attribute before an XML payload gets rejected downstream by a strict parser. Anyone maintaining an RSS or Atom feed, an Android layout file, or a SOAP request uses it as a quick sanity check without installing a dedicated XML editor. Because validation relies on the browser's own parser rather than a custom implementation, the errors it surfaces match what a real XML consumer would also reject.
- Beautifies XML with clean, readable indentation
- Minifies XML for smaller production payloads
- Validates XML syntax and flags errors instantly
- Runs entirely client-side - nothing is uploaded to a server
- Includes unlimited use with a RankWise Tools membership
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Frequently asked questions
Why does my XML fail to validate?
Usually an unclosed tag, mismatched opening/closing tags, or an unescaped special character like & inside text content (& must be written as &). The validator shows the browser's own parser error to help you locate the issue.
Is my XML data sent to a server?
No - formatting, minifying, and validation all happen entirely in your browser using the native DOM XML parser; nothing is uploaded.
Does this support XML namespaces and attributes?
Yes - namespaced tags and attributes are preserved exactly as written; only whitespace between tags is added (formatting) or removed (minifying).
