JSON to YAML Converter

Convert JSON and YAML locally, with clear errors and copyable or downloadable output.

Conversion

Indent

JSON input

JSON · 1 line

YAML output

YAML · 1 line

Up to 1 MB. Conversion preserves values, not YAML comments or formatting. Unsupported tags, duplicate keys and values JSON cannot represent are reported.

How this tool works

Convert config safely

Paste configuration data, choose a direction and indentation, then copy or download the result. Swap direction to convert the output back. Each input is limited to 1 MB.

Conversion preserves values, not YAML comments or formatting. Duplicate keys, unsupported tags, cycles and values JSON cannot represent are reported. Quote YAML integers beyond JavaScript's safe numeric range to preserve them as strings.