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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