Click "Validate" to check your YAML syntax
Why Use Our YAML Validator?
- Instant Validation - Get immediate feedback on YAML syntax errors
- Line Number Errors - Know exactly where your YAML is broken
- One-Click Format - Beautify your YAML with proper indentation
- No Signup - 100% free, no ads, no account required
- Privacy - All processing happens in your browser, nothing sent to servers
Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It's commonly used for configuration files, data exchange, and APIs.
How does validation work?
Our validator parses your YAML using a JavaScript implementation. If there are syntax errors, it tells you the exact line number and what went wrong.
Is my data secure?
Yes! All processing happens in your browser. Your YAML is never sent to any server - it stays on your device.
What's the difference between YAML and JSON?
YAML is more human-readable and uses indentation, while JSON uses brackets and braces. YAML can represent more data types natively, but JSON is more strictly defined.
Can I convert between YAML and JSON?
Yes! If your YAML is valid, you can use our formatter to verify it. For conversion, try our JSON Formatter tool.