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JSON ⇄ YAML

Convert JSON to YAML and YAML to JSON in your browser, with indent, sort-key and multi-document support.

🔒 Runs in your browser — files never leave your deviceFree · No sign-up

JSON input

Drop a .json / .yaml file, or click to choose

YAML output

How to use the JSON ⇄ YAML converter

  1. Pick a direction — JSON → YAML or YAML → JSON. Pasting usually sets it for you, because JSON starts with { or [.
  2. Paste your text, drop a .json/.yaml file, and adjust indent, line width or key sorting on the left.
  3. The result appears instantly on the right; copy it or download it as data.yaml / data.json.

FAQ

Does it support anchors and aliases?

Yes. YAML anchors (&base) and aliases (*base) are resolved while reading, so the JSON contains the expanded value. Going the other way, repeated objects can be written back as anchors — turn that option off if you want a flat, duplicated file.

What about a file with several YAML documents?

Documents separated by --- are all read and returned as a JSON array, and a note tells you how many were found.

Is my data uploaded anywhere?

No. Parsing runs on js-yaml inside your browser tab; the text and any file you drop never leave your device.

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