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Convert JSON to YAML

Paste your JSON and this tool converts it to YAML instantly, right in your browser. JSON (JavaScript Object Notation) is the lingua franca of web APIs: compact, strictly typed, and supported everywhere. YAML is a human-friendly, indentation-based format popular for configuration like Docker Compose, Kubernetes, and CI pipelines.

The conversion is completely client-side: there's no upload, no queue, and no account. Big files are converted in the background with a Cancel button, the options for the lossy steps are one click away, and your last conversion is remembered.

Looking for a different conversion? See all format converters.

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YAMLJSONJSONXMLJSONJSON LinesJSONTSV

JSON to YAML Converter — frequently asked questions

How do I convert JSON to YAML?
Paste your JSON, or open or drop a file, and the YAML appears instantly. Copy it, download it (named after your file), or open it in another tool. Errors point to the line and column. Everything happens in your browser.
Is my data uploaded to a server?
No. The conversion runs entirely in your browser — your data never leaves your device, so it's safe to convert configuration, API payloads, and other sensitive files. You can even go offline once the page has loaded.
Is this converter really free?
Yes. No sign-up, no payment details, no file-size paywall, and no watermark on the output.

All format converters

JSONXMLJSONCSVYAMLJSONYAMLXMLYAMLCSVXMLJSONXMLYAMLXMLCSVCSVJSONCSVYAMLCSVXMLJSONJSON LinesJSON LinesJSONJSON LinesCSVCSVJSON LinesJSONTSVTSVJSONCSVTSVTSVCSVJSONTOMLTOMLJSONYAMLTOMLTOMLYAML

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