JSON to YAML

Create readable YAML from JSON while preserving scalar types and large numeric values.

Private browser workspaceInput: JSON → Output: YAML

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Your file never leaves this browser

Processing happens locally using browser APIs and on-device code. Closing this tab clears the working data.

How it works

Done in three simple steps

Choose json from your device or use the available text controls.

Choose the available options and process the input locally.

Review the result, then download it to your device.

Good to know

Do quoted numbers remain strings?+

Yes. A JSON string such as "00123" stays a string. Numeric values remain numbers, including values larger than JavaScript’s safe integer range.

Are my files uploaded?+

No. Processing happens on this device. The tool may download its own code, but source files and output are not sent to a processing server.