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Waiting for JSON.
JSON to YAML Converter
Turn JSON into clean, readable YAML locally
Preserve nested data and primitive values, choose your indentation, and copy or download YAML without uploading the source.
No conversion yet
Conversion runs entirely in this browser.
Safe serialization
JSON values keep their meaning
Nested objects, arrays, strings, numbers, booleans and null are serialized with the mature YAML library. Ambiguous strings are quoted whenever YAML could otherwise interpret them as another type.
Readable indentation
Choose two, four or eight spaces. Long values remain intact and multiline strings use readable YAML formatting.
Focused conversion
Output ready for configuration files
Inspect formatted YAML beside the source, then copy it or download a .yaml file. Invalid JSON is reported with its source location.
JSON to YAML only
YAML parsing and YAML-to-JSON conversion are intentionally outside this release.
FAQs
JSON-to-YAML questions
Will strings such as “true” or “001” change type?
No. The serializer quotes ambiguous strings so they remain strings when the YAML is parsed.
Does conversion preserve key order?
Yes. Object keys are emitted in the same order provided by the parsed JSON document.