Does this pretty-print?

Yes. Indentation is the YAML library default (two spaces).

Can I start from YAML?

Use YAML to JSON, edit, then come back.

No. Insertion order from JSON.parse is kept.

You get a parse error. Fix it in the JSON validator first.

Runs in your browser · Last updated 4 September 2026

Turn JSON into indented YAML locally. Useful for CI configs and Kubernetes manifests.

JSON

service: boring-tools
replicas: 2
env:
  NODE_ENV: production
ports:
  - 3000

“json to yaml converter online” is its own query. The page should not be a tab on the YAML→JSON tool if you want both to rank.

Does this pretty-print?: Yes. Indentation is the YAML library default (two spaces).
Can I start from YAML?: Use YAML to JSON, edit, then come back.
Are keys sorted?: No. Insertion order from JSON.parse is kept.
Is anything uploaded?: No.
What if the JSON is invalid?: You get a parse error. Fix it in the JSON validator first.