When to use it
YAML is the most common format for config files (Docker Compose, Kubernetes, GitHub Actions, Ansible), while JSON is the universal format for APIs and most programming languages. This tool converts both ways.
How it works
Uses the open-source js-yaml library, widely used (including by Kubernetes itself), instead of a homemade parser. Nothing is sent to a server.
Frequently asked questions
Are YAML comments preserved when converting to JSON?
No — JSON doesn't support comments, so they're dropped when converting YAML → JSON.
Is my data sent to any server?
No — the entire conversion happens locally in your browser.