JSON to YAML Converter
Convert JSON to YAML and YAML to JSON online. Bidirectional converter with indent options, inline arrays, and instant download.
How to Use JSON to YAML Converter
- Paste your JSON into the left input panel. The tool converts it to YAML in real-time as you type.
- Adjust formatting options: choose 2 or 4 space indentation, enable inline short arrays, or toggle string quoting.
- Click the Swap button to switch to YAML → JSON mode and convert YAML back to JSON.
- Copy the output to your clipboard or download it as a .yaml or .json file.
About JSON to YAML Converter
The JSON to YAML Converter is a free online tool that converts between JSON and YAML formats instantly. JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language) are both popular data serialization formats, but they serve different purposes. JSON is the standard for APIs and data exchange, while YAML is preferred for configuration files like Docker Compose, Kubernetes manifests, GitHub Actions workflows, and CI/CD pipelines because of its human-readable syntax and support for comments. This bidirectional converter handles nested objects, arrays, null values, booleans, multiline strings, and all standard YAML features. Customize the output with indent size options and inline array formatting. Everything runs 100% client-side in your browser — your data never leaves your device.
Frequently Asked Questions
How do I convert JSON to YAML?
Paste your JSON into the left input panel and the tool instantly converts it to YAML in the right panel. You can customize the output with 2 or 4 space indentation, inline short arrays, and string quoting options. Copy or download the result when ready.
Can I convert YAML to JSON?
Yes! Click the Swap button to switch to YAML → JSON mode. Paste your YAML in the left panel and get clean, formatted JSON output. The tool handles YAML features like comments (stripped in JSON output), anchors, and multiline strings.
What is the difference between JSON and YAML?
JSON uses braces {} and brackets [] with strict syntax, while YAML uses indentation-based structure that's more human-readable. YAML supports comments, JSON doesn't. JSON is standard for APIs and JavaScript, while YAML is preferred for configuration files (Docker, Kubernetes, GitHub Actions). Both represent the same data structures.
Does the converter handle nested objects and arrays?
Yes. The converter fully supports deeply nested objects, arrays of objects, mixed types, null values, booleans, numbers, and multiline strings. Nested YAML structures are properly indented, and nested JSON is correctly formatted with braces and brackets.
Is YAML a superset of JSON?
Technically yes — valid JSON is also valid YAML (since YAML 1.2). However, they have different conventions and strengths. YAML adds features like comments, anchors/aliases, and multiline strings that JSON doesn't support. This tool converts between their conventional formats.
Is my data safe when converting?
Yes. This JSON to YAML converter runs 100% client-side in your browser. No data is ever transmitted to any server. Your JSON and YAML content stays completely private on your device.
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