YAML ↔ JSON Converter

Bidirectional conversion between YAML and JSON. Validates syntax, preserves comments (YAML → JSON where possible), and handles multi-document YAML files.

YAML Input

JSON Output

{
  "name": "DevToolsHub",
  "version": "1.0.0",
  "features": [
    {
      "name": "JSON Formatter",
      "category": "dev",
      "active": true
    },
    {
      "name": "YAML Converter",
      "category": "code",
      "active": true
    }
  ],
  "config": {
    "theme": "dark",
    "port": 3000,
    "database": {
      "host": "localhost",
      "port": 5432
    }
  }
}

Frequently Asked Questions

When would I convert YAML to JSON?

YAML is popular for configuration files (Docker Compose, Kubernetes, GitHub Actions). JSON is required by most APIs and JavaScript applications. Convert YAML to JSON when feeding config data into APIs or Node.js scripts.

Does YAML support everything JSON does?

YAML is a superset of JSON — valid JSON is valid YAML. YAML additionally supports comments, multi-line strings, anchors/aliases, and more expressive syntax. JSON supports all data types YAML does for simple data structures.