Online XML Validator & Formatter - Real-time Error Detection
Free online XML validator and formatter. Check XML syntax, format with proper indentation, and detect errors in real-time. Features drag & drop support, line numbers, and dark mode for better readability.
Drop XML file here
Error Details
| Line | Message |
|---|
Common XML Use Cases
Web Services & APIs: Validate SOAP messages and REST API responses
Data Exchange: Verify XML files before importing into databases or systems
Configuration Files: Check application config files for syntax errors
RSS/Atom Feeds: Validate news feeds and syndication formats
How to Use XML Validator
- Paste your XML content into the editor or drag & drop an XML file
- Click "Validate XML" to check for syntax errors and structure issues
- Use "Format XML" to beautify and properly indent your code
- Copy the validated XML or download it as a file
Frequently Asked Questions
XML validation is the process of checking whether an XML document follows proper XML syntax rules. This includes verifying elements are properly nested, tags are closed correctly, attributes are properly quoted, and the document follows XML specifications.
Validating XML helps prevent data processing errors, ensures compatibility with systems that consume your XML, and makes debugging easier. Invalid XML can cause applications to fail, data to be lost, or integrations to break.
Currently, this tool performs well-formedness validation which checks XML syntax and structure. For schema validation (XSD) and DTD validation, we recommend using specialized XML editors or validation tools.