Private developer tool
Convert JSON and YAML without uploading data
Transform one strict JSON-compatible document and keep every character in this browser.
Choose direction and paste a document
One document, up to 500,000 characters. Duplicate keys and ambiguous YAML features are rejected.
Choose indentation and convert
Conversion preserves JSON-compatible data, not YAML comments, anchors, tags, scalar styles or semantic validity for a destination system. Diff and parse the result with the authoritative target tool.
Local conversion result
Review evidence
- Direction
- —
- Root type
- —
- Values
- 0
- Source characters
- 0
- Output characters
- 0
- Comments omitted
- No
JSONYAML did not upload, execute, deploy or store the document. Verify important output independently.