YAML ↔ JSON help

Convert between YAML and JSON, both directions, as you type.

Supported YAML

• Block mappings and sequences, nested by indentation.
• Plain, single-quoted, and double-quoted scalars; null, booleans, numbers.
• # comments and the --- / ... document markers.
• | (literal) and > (folded) block scalars, with the - chomping indicator.
• Inline flow collections: [a, b, c] and {a: 1, b: two}.

Not supported

Anchors and aliases (& / *), explicit tags (!!str), complex mapping keys, and multiple documents in one file. For those, use a full YAML library.

Notes

• JSON → YAML quotes any string that would otherwise be read as a number, boolean, or null.
• Nothing is uploaded; both directions run in the page.

Everything runs in your browser. Nothing you enter or drop is uploaded.