JSON to YAML Converter
Convert between JSON and YAML formats instantly. Bidirectional — works both ways.
JSON vs YAML Comparison
| Feature | JSON | YAML |
|---|---|---|
| Syntax | Braces and brackets | Indentation-based |
| Readability | Moderate — verbose | High — clean and minimal |
| Comments | Not supported | Supported (#) |
| Data types | string, number, bool, null, array, object | Same + dates, timestamps |
| Common use | APIs, configs, data exchange | K8s, Docker, CI/CD configs |
| File size | Larger (brackets + quotes) | Smaller (no brackets) |
| Parsing speed | Fast (strict grammar) | Slower (complex grammar) |
| Superset | — | YAML is a superset of JSON |
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Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It uses indentation instead of brackets, making it popular for configuration files in Kubernetes, Docker Compose, GitHub Actions, and other DevOps tools.
Can I convert YAML back to JSON?
Yes! This tool is bidirectional. Click the 'YAML → JSON' tab to convert YAML to JSON. You can also use the swap button (⇄) to move your output back to the input and reverse the direction.
Does this handle nested objects and arrays?
Yes. The converter handles deeply nested objects, arrays of objects, mixed types, multiline strings, and other complex structures. Nested objects become indented YAML mappings, and arrays become dash-prefixed lists.
Is YAML a superset of JSON?
Yes — valid JSON is also valid YAML. This means you can use JSON syntax within YAML files. However, YAML adds features like comments, anchors, and multiline strings that JSON doesn't support.
Why would I convert JSON to YAML?
Common reasons: creating Kubernetes manifests from JSON API responses, converting package.json to a more readable format, migrating configuration files to YAML for better readability and comment support.