Convert JSON to YAML — Clean, Readable, Spec-Safe

YAML powers most modern configuration: Kubernetes manifests, Docker Compose files, GitHub Actions and GitLab CI workflows, Ansible playbooks, OpenAPI specs, Helm charts, CircleCI configs, and countless application config files. JSON is the universal data interchange format. You constantly need to move between them — converting an API response into a config, generating Kubernetes resources from a script, or just preferring YAML's readability for editing by hand.

Our JSON to YAML converter walks your parsed JSON and emits idiomatic YAML 1.2 with proper indentation, type-safe scalar formatting, and the right escaping for tricky strings. **Objects** become mappings (key: value). **Arrays** become block sequences with `-` markers. **Numbers, booleans and null** are emitted as native YAML scalars (not quoted), so a downstream YAML parser gets the right types. **Strings** are written unquoted whenever it's safe and quoted with proper escaping whenever it isn't — so values like `"yes"`, `"123"`, `"true"`, or strings starting with reserved characters (`:`, `#`, `-`, `@`) round-trip correctly instead of being silently parsed as booleans or numbers.

Choose your indent (2 or 4 spaces — 2 is the Kubernetes and Docker Compose convention). Toggle the document-start marker (`---`) when you need to concatenate multiple documents or follow strict YAML 1.2 conventions. Optionally force quoting on all string values when you want to avoid any ambiguity for downstream tooling.

Everything runs locally in your browser. Your JSON — which may include API tokens, secret env vars, customer data, or internal service configs — is never uploaded, never logged, never seen by a server.