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YAML to JSON

Convert between YAML and JSON

YAML input

JSON result

Built-in lightweight parser (no dependencies). Supported: indented mappings, - sequences, scalars (string/number/bool/null), quoted strings, # comments, block scalars | and >, single-line flow [] and {}.

Not supported: anchors & and aliases *, merge keys <<, multiple documents ---, tags !!type. These raise an error instead of producing a wrong result.

All processing happens locally in your browser. Your data is never uploaded to a server.