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YAML ↔ JSON Converter.

Convert YAML to JSON or JSON to YAML instantly in your browser. No data is sent to any server.

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How to use

Choose a conversion direction: YAML → JSON or JSON → YAML.

Paste your input into the text area.

The converted output appears instantly — click Copy or Download to save it.

Frequently Asked Questions

Is my data sent to a server?

No. All conversion happens in your browser using js-yaml. Nothing is transmitted.

What YAML features are supported?

js-yaml supports YAML 1.2 including anchors, aliases, multi-line strings, and all scalar types. YAML-specific types (e.g. !!binary) are not preserved in the JSON output.

Can I convert a YAML file with multiple documents?

Only the first document is converted. Multi-document YAML (separated by ---) is not fully supported in this tool.

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