YAML ↔ JSON Converter

Convert YAML to JSON and JSON back to YAML quickly, entirely in your browser.

YAML input

JSON output (pretty-printed)

Notes:

This tool runs entirely in your browser — nothing is uploaded.
YAML is more flexible than JSON (comments, unquoted keys, etc.), so some YAML may not round-trip exactly back to the same formatting.
JSON output is pretty-printed with 2-space indentation for easier reading.