Modern infrastructure speaks YAML: Kubernetes manifests, docker-compose files, GitHub Actions workflows, and Ansible playbooks all rely on it. Documentation and API responses, on the other hand, usually arrive as JSON. This converter closes that gap by rewriting any valid JSON document as equivalent YAML with proper two-space indentation.
DevOps engineers reach for it when translating a JSON configuration example into a Helm values file, and backend developers use it to migrate an application's settings from config.json to config.yaml without retyping a single key. Because the two formats represent the same data model, nothing is lost in translation.
Everything on this page runs locally. Your configuration data is parsed and re-serialized by your browser alone, and no fragment of it ever crosses the network — which matters when config files contain credentials, tokens, or internal hostnames.
Yes. YAML's data model is a superset of JSON's, so every object, array, string, number, boolean, and null survives the round trip unchanged. Only formatting differs between the two representations.
No. YAML supports comments but JSON has no way to express them, so the output is pure data. You can add explanatory comments by hand after copying the result.
Nested objects are indented with two spaces per level, the convention used by Kubernetes, GitHub Actions, and most style guides. Arrays are written as dash-prefixed list items under their parent key.