YAML to JSON Converter
The YAML to JSON Converter transforms YAML data into JSON format. YAML (YAML Ain't Markup Language) is a human-friendly data serialization format used for configuration files, especially in DevOps (Docker Compose, Kubernetes, Ansible). JSON is more machine-friendly and widely used in APIs and web applications. This converter parses YAML and produces equivalent JSON, making it easy to use YAML configs in JavaScript applications or convert between formats.
Formula
Conversion rules: - YAML key: value → JSON "key": value - YAML lists (- item) → JSON arrays [item] - YAML nested objects → JSON nested objects - YAML strings → JSON strings (quoted) - YAML numbers/booleans → JSON numbers/booleans - YAML null → JSON null
Example
Input YAML: name: Alice age: 30 skills: - Python - JavaScript Output JSON: { "name": "Alice", "age": 30, "skills": ["Python", "JavaScript"] }
How to Use
- Paste your YAML data into the input field
- Click convert to generate JSON
- Review the JSON output
- Copy or download the JSON
- Use in APIs, JavaScript apps, or configuration
Frequently Asked Questions
What is YAML used for?
YAML is primarily used for configuration files in DevOps tools (Docker Compose, Kubernetes, Ansible, CI/CD pipelines), data serialization, and application settings. It is more human-readable than JSON but less commonly supported by APIs.
Is YAML a superset of JSON?
Yes, YAML 1.2 is a superset of JSON. Any valid JSON is also valid YAML. However, YAML adds features like comments, multi-line strings, anchors, and aliases that JSON does not have. When converting YAML to JSON, these features are resolved.
How are YAML comments handled?
YAML comments (starting with #) are not preserved in the JSON output, as JSON does not support comments. The converter strips comments during conversion. If you need comments in the output, consider JSON5 or JSONC.
What about YAML anchors and aliases?
YAML anchors (&anchor) and aliases (*alias) allow reusing content. The converter resolves these during conversion, expanding aliases to their referenced content. The JSON output contains the full expanded data without anchors or aliases.
Can I convert complex YAML with multi-line strings?
Yes. The converter handles YAML multi-line strings (using | for literal blocks and > for folded blocks). These are converted to JSON strings with appropriate newline characters (\n) preserved.