Convert JSON to YAML Online
YAML is a human-readable data serialization format widely used in configuration files for Kubernetes, Docker Compose, GitHub Actions, Ansible, and many other tools. If you have data in JSON format — from an API response, a config export, or a database — and need it in YAML for a configuration file or infrastructure-as-code template, this converter handles the transformation automatically. It correctly maps JSON objects to YAML mappings, JSON arrays to YAML sequences, and preserves data types including strings, numbers, booleans, and null values. The resulting YAML uses clean 2-space indentation for maximum compatibility. This tool runs entirely in your browser, so sensitive configuration data like secrets and API keys never leaves your machine. Multi-level nesting, long strings, and special characters are all handled correctly.
FAQ
- What are the main differences between JSON and YAML?
- YAML uses indentation instead of braces and brackets, omits quotes around most strings, and supports comments (# comment). YAML is more readable for humans; JSON is stricter and easier to parse programmatically.
- Is YAML a superset of JSON?
- Yes. Valid JSON is also valid YAML 1.2. This means you can use JSON syntax inside a YAML file, though it defeats the readability purpose.
- Will special characters be escaped correctly?
- Yes. Strings containing colons, hashes, or other YAML-special characters are automatically quoted in the output to ensure correctness.