Convert between YAML and JSON instantly. Full YAML 1.2 support — objects, arrays, multiline strings, nested structures. 100% private.
Convert YAML to JSON or JSON to YAML online in seconds — no signup, no uploads, no limits. Paste your YAML config, click Convert, and get clean formatted JSON. Switch to reverse mode to go from JSON back to YAML. Unlike online converters that upload your data to remote servers, this tool runs entirely in your browser using js-yaml. Safe for Docker Compose files, Kubernetes manifests, CI/CD configs, or any YAML you need transformed.
Paste your YAML into the input area or click Load Sample for an example. Click Convert and the JSON output appears instantly. Copy it to your clipboard or download the .json file. No signup or account required.
Yes. Use the direction toggle to switch between YAML to JSON and JSON to YAML modes. Both conversions run instantly in your browser.
Completely safe. The conversion runs entirely in your browser using the js-yaml library. Your data never leaves your device — nothing is uploaded to any server.
Full YAML 1.2 support including objects, arrays, nested structures, multiline strings (block scalars), anchors, aliases, and all standard data types. The converter handles complex real-world YAML files like Docker Compose, Kubernetes manifests, and CI/CD configs.