YAML ↔ JSON Converter

Paste YAML (Kubernetes, Docker Compose, OpenAPI…) to get JSON, or the other way round. Errors point to the exact line.

Runs in your browser — nothing is uploaded
Direction

How to use YAML to JSON Converter

  1. Choose the direction.
  2. Paste your YAML or JSON — the result appears as you type.
  3. Copy or download it.

Questions

Are YAML anchors and aliases supported?

Yes — aliases are expanded in the JSON output.

What about multiple YAML documents (---)?

Multi-document YAML becomes a JSON array with one item per document.

Are comments kept?

JSON has no comments, so YAML comments are dropped when converting to JSON.