About this tool
YAML dominates CI/CD, Kubernetes and Ansible configuration because it is closer to natural language than JSON, supports comments and uses indentation for hierarchy — much friendlier for humans to edit.
Built on the standard js-yaml library, our converter preserves strings, numbers, booleans, nulls, nested objects and arrays correctly, with options for indent width and line width.
How to use
- Paste JSON into the input.
- Choose indent (default 2 spaces) and line width.
- Click "Convert".
- Copy or download as .yaml.
Use cases
- Migrate API contracts or configs into Kubernetes or GitHub Actions YAML.
- Turn complex JSON into a YAML representation that is easier to code-review.
- Move legacy configuration into modern YAML tooling.
Notes
- Data types and hierarchy are preserved exactly.
- Keys with special characters are auto-quoted for YAML compliance.
- Comments are not auto-generated; add them manually if desired.
Frequently Asked Questions
Do value types change?
No. Numbers stay numbers, strings stay strings, booleans stay booleans.
Why are some strings quoted?
Strings such as `yes`, `on` or `1.0` would otherwise be parsed as booleans or numbers. We quote them to preserve string semantics.
Do you support multi-document YAML?
Output is a single document in this release. Separate documents with `---` manually if needed.