Two config formats, one tool
YAML and JSON represent the same kind of structured data. JSON is compact and universal for APIs; YAML is more human-readable and common in config files (Docker, GitHub Actions, Kubernetes). Convert JSON to clean indented YAML, or parse YAML back into strict JSON.
Note: this handles the common subset — nested objects, arrays, strings, numbers and booleans. Very advanced YAML features (anchors, multi-line block scalars) may need a dedicated parser. Everything runs in your browser.