YAML ↔ JSON Converter

YAML (YAML Ain't Markup Language) is a human-friendly data serialization format using indentation. JSON (JavaScript Object Notation) uses braces and brackets. YAML is more readable; JSON is more widely used in APIs.

Yes. JSON arrays convert to YAML sequences (using dash - prefix). All data types including nested objects, arrays, strings, numbers, and booleans are fully supported.

All conversion happens in your browser using js-yaml. No data is sent to any server.

Yes. If your YAML has invalid syntax, the tool shows a clear error message with the line and column where the issue occurs.

Yes, 100% free with no registration needed.