JSON to YAML Converter
Convert JSON ↔ YAML, both ways.
Runs entirely in your browser — nothing you enter is uploaded, logged, or tracked.
Paste JSON to get clean YAML, or paste YAML to get JSON — converting both directions with full validation. Nested structures, arrays and special characters are handled correctly, and parse errors are shown clearly. Your data never leaves the page.
Frequently asked questions
Does it convert both directions?
Yes. Switch between JSON→YAML and YAML→JSON; whichever you paste is parsed, validated, and re-emitted in the other format.
Is my data uploaded?
No. Parsing and conversion run entirely in your browser using a vendored, on-device YAML library. Nothing is sent to a server.
What happens if my input has an error?
The exact parse error is shown so you can fix it — invalid JSON or YAML will not silently produce wrong output.