YAML Formatter and Validator

Format and validate YAML online for free, or convert YAML to JSON. Runs in your browser.

Example

name:    demo
ports: [80,   443]

name: demo
ports:
  - 80
  - 443

Frequently asked questions

Can I convert YAML to JSON?

Yes. Switch the output format to JSON and the same document is converted. JSON input is accepted too.