XML Formatter & Validator

Paste your XML into the text box above (or upload a .xml file), choose your indentation style, then click Run. The formatted output appears instantly — no account required.

The tool reports the exact error with the line and column number, so you can find and fix the problem quickly. Common errors include unclosed tags, mismatched element names, missing quotes around attribute values, and illegal characters.

Yes — select 'Compact (minified)' as the indentation option. The tool will validate your XML and return it as a single-line string without changing any of the element content or structure.

Yes. Comments (<!-- ... -->) and processing instructions (<? ... ?>) are preserved in the output. Only the whitespace between tags is changed.