JSON ↔ YAML Converter
Convert JSON to YAML or YAML back to JSON. Paste, convert, copy or download. Everything runs locally — configs never leave the tab.
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FAQ
Is my JSON or YAML uploaded?
No. Conversion uses js-yaml in your browser. API payloads and config files stay on your device.
Which YAML version is supported?
js-yaml 4 parses YAML 1.2. Anchors, aliases and most mappings work. Exotic custom tags may fail — that's a parser limit, not a server error.
Will key order be preserved?
Modern browsers keep object key order, so round-trips usually look stable. Don't treat that as a formal YAML spec guarantee.