Local YAML to JSON / privacy-first

Convert YAML to JSON

Convert YAML settings to JSON locally and check types, arrays, and error lines.

Enter YAML

Up to 5 MiB. Conversion and download stay local; input is never sent externally.

Mappings, sequences, nested structures, numbers, booleans, null, quotes, and comments.
Invalid YAML stops with a line number; multiple documents are rejected rather than merged.
Anchors, block scalars, schema validation, and external requests are not supported.