JSON to YAML Converter

This is the reverse of YAML-to-JSON, and it's just as commonly needed: a lot of internal tools and APIs only emit JSON, but the config file it needs to become — a Kubernetes manifest, a GitHub Actions workflow, a Helm values file — has to be YAML. Hand-converting means re-indenting every nested object into whitespace-delimited structure, which is exactly the kind of mechanical, error-prone work worth automating.

This tool parses the JSON and re-serializes it as clean, properly indented YAML, converting braces and brackets into YAML's native block-mapping and block-sequence syntax. It's a common step when scaffolding infrastructure config from a JSON API response, or converting a Postman-exported JSON body into a YAML fixture for testing.