XML Formatter & Validator
Beautify, validate and minify XML documents in your browser instantly. Detects syntax errors and formats with proper indentation. Free, no uploads.
💻 Developer Tools
Free
Browser-based
✓ Valid XML
Why Format XML?
Raw or minified XML is hard to read and debug. Beautifying adds consistent indentation so the element hierarchy is immediately clear. This tool also validates your XML against the W3C spec — unclosed tags, missing quotes and illegal characters are all caught and reported with a precise location.
Common XML Errors
| Error | Cause |
|---|---|
| Unclosed tag | Opening tag with no matching closing tag |
| Attribute quotes | Attribute values must be wrapped in quotes |
| Special characters | Use & < > instead of raw & < > |
| Multiple roots | XML must have exactly one root element |
| Case mismatch | XML tags are case-sensitive — <Tag> ≠ <tag> |
Beautify vs Minify
Use Beautify when reading, editing or debugging XML. Use Minify before embedding XML in config files or APIs to reduce byte size — whitespace between elements is stripped but all data is preserved.