Convert YAML and JSON both ways
YAML is easy for humans to write — think Docker Compose, GitHub Actions and Kubernetes — while JSON is what most programs consume. This converter moves between the two instantly and validates as it goes, so you catch indentation mistakes early.
How to use it
- Pick the direction — YAML → JSON or JSON → YAML.
- Paste your document.
- Click Convert; any syntax error is reported inline.
Frequently asked questions
Which YAML version is supported? It uses js-yaml, which implements YAML 1.2 — the same spec used by most modern tools and CI systems.
Can it convert JSON to YAML too? Yes — switch the direction to JSON → YAML for clean, indented YAML output.
Will it tell me if my YAML is invalid? Yes — if parsing fails you get the exact error message so you can fix the indentation or syntax.