YAML Validator & Formatter

Validators & Parsers Tool

Validate, parse, and pretty-print/beautify your YAML configurations client-side. Fast, secure, and free.

YAML Validator & Formatter

Input YAML:

Formatted YAML Output:

💡 Frequently Asked Questions

Q: How does the YAML Formatter work?

A: It parses the input YAML document and formats it with standardized spacing. If there is a syntax issue, it will point out the error to help you align your YAML structure.

Q: Is YAML indentation sensitive?

A: Yes, YAML relies heavily on white-space indentation to construct key-value scopes and lists. You must always use spaces (typically 2 or 4) for nesting. **Using tab characters is illegal in YAML** and will trigger validation errors.