FreeDev Tools

YAML Validator

Validate YAML syntax and view the parsed structure as formatted JSON.

YAML Validator parses your YAML using the js-yaml library and reports any syntax errors with line and column information. Valid YAML is also shown as formatted JSON so you can verify the parsed structure.

Frequently Asked Questions

Indentation consistency, valid data types, correct colon/dash syntax, and illegal characters. Common errors like mixing tabs and spaces are flagged.