XML Formatter
Format, beautify, minify, and validate XML data. Free online XML formatter and validator with error reporting. No sign-up required.
Frequently Asked Questions
What is XML formatting?
XML formatting (beautification) adds proper indentation and line breaks to compact XML data, making it easier to read and debug. Our formatter also validates your XML and shows helpful error messages if there are syntax issues.
What is XML minification?
XML minification removes all unnecessary whitespace (spaces, tabs, newlines) from XML data, reducing its file size. This is useful for production deployments where smaller file sizes improve load times.
How do I validate XML?
Paste your XML into the input field and click "Validate." If your XML is well-formed, you'll see a green "Valid XML" message. If there are errors, the tool will show the error type and approximate location to help you fix it.
What are common XML errors?
Common XML errors include: unclosed tags, mismatched opening and closing tags, missing quotation marks around attribute values, unescaped special characters (& must be &, < must be <), and multiple root elements (XML can only have one root element).
Does this tool support XML namespaces and CDATA?
Yes, the formatter fully supports XML namespaces (xmlns), attributes, CDATA sections, comments, and processing instructions. All valid XML 1.0 features are handled correctly.
Is this tool free and private?
Yes, completely free with no sign-up required. All formatting, minification, and validation happens in your browser using the built-in DOMParser. Your XML data never leaves your device.