JSON ⇄ YAML
Convert JSON to YAML and YAML to JSON in one click. Paste either format and get a clean, validated conversion — ideal for config files, CI pipelines and Kubernetes manifests.
About the JSON ⇄ YAML
JSON and YAML describe the same kind of structured data, but YAML’s indentation-based syntax is easier for humans to write — which is why config files, CI pipelines and Kubernetes manifests favor it, while APIs favor JSON. Converting between them by hand is tedious and easy to get wrong with indentation.
This converter parses one format and re-serializes it as the other, preserving structure and types, and flags syntax errors. It runs entirely in your browser, so configuration that may contain sensitive values never leaves your machine.
How to use it
- 1Choose the conversion direction (JSON→YAML or YAML→JSON).
- 2Paste your source document.
- 3Copy the converted output.
Features
- Convert both directions: JSON → YAML and YAML → JSON
- Validates input and reports errors
- Preserves nesting, arrays and types
- Configurable JSON indentation
- One-click copy of the result
Frequently asked questions
How do I convert JSON to YAML?
Select the JSON → YAML direction, paste your JSON, and the equivalent YAML appears instantly, ready to copy.
Is YAML a superset of JSON?
Yes — any valid JSON is also valid YAML. This tool produces clean, idiomatic YAML rather than JSON-style YAML.
Does it validate my input?
Yes. If the JSON or YAML is malformed, the tool reports the error instead of producing bad output.
Is my data private?
Yes. Conversion runs entirely in your browser; nothing is uploaded.