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YAML to JSON Converter

Convert YAML files to JSON format directly in your browser using the YAML to JSON Converter. This tool processes your data locally without uploading, ensuring complete privacy.

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The YAML to JSON Converter transforms YAML documents into JSON format compliant with the YAML 1.2 specification, supporting features like multi-document handling, anchors, and complex keys. It outputs pretty-printed JSON with a 2-space indent for readability. Running entirely in the browser, this tool guarantees your YAML data remains private without any server upload. For developers working with Kubernetes or Docker Compose, this converter simplifies format transitions. You may also find the Json To Yaml and Json Formatter tools useful for related JSON processing tasks.

How to Use YAML to JSON Converter

  1. Paste your YAML content into the input area or upload a YAML file.
  2. The converter automatically parses the YAML using the yaml library compliant with YAML 1.2.
  3. View the pretty-printed JSON output formatted with a 2-space indent in the output panel.
  4. Copy the JSON output or download it as a file for integration in your projects.

How It Works

This converter leverages the yaml JavaScript library, which fully supports the YAML 1.2 specification, including advanced features like multi-document YAML streams, anchors and aliases to avoid duplication, complex mapping keys, and both flow and block scalars. When you input YAML, the tool parses it into an abstract syntax tree (AST) in memory. Then it serializes this structure into JSON format, applying a 2-space indentation for clarity. Since the entire process runs client-side in your browser's JavaScript environment, your data never leaves your device, ensuring privacy and security.

Example

# YAML input
apiVersion: v1
kind: Pod
metadata:
  name: nginx
spec:
  containers:
    - name: nginx
      image: nginx:1.14.2
      ports:
        - containerPort: 80

---
# Another document
apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  selector:
    app: nginx
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80

{
  "apiVersion": "v1",
  "kind": "Pod",
  "metadata": {
    "name": "nginx"
  },
  "spec": {
    "containers": [
      {
        "name": "nginx",
        "image": "nginx:1.14.2",
        "ports": [
          {
            "containerPort": 80
          }
        ]
      }
    ]
  }
}

{
  "apiVersion": "v1",
  "kind": "Service",
  "metadata": {
    "name": "nginx-service"
  },
  "spec": {
    "selector": {
      "app": "nginx"
    },
    "ports": [
      {
        "protocol": "TCP",
        "port": 80,
        "targetPort": 80
      }
    ]
  }
}

When to Use YAML to JSON Converter

  • Converting Kubernetes configuration files from YAML to JSON for systems or tools that require JSON input.
  • Transforming Docker Compose YAML files into JSON for integration with JSON-based APIs or tools.
  • Preparing CI/CD pipeline YAML configurations to JSON format for validation or processing.
  • Developers needing quick format conversion during debugging or development of infrastructure as code.
  • Students learning data serialization formats and needing to compare YAML structure with JSON equivalents.

For additional JSON manipulation, consider using the Json Validator to validate your JSON output or Json Formatter to reformat and beautify JSON files.

Frequently Asked Questions

Does this converter support multi-document YAML files?

Yes, the YAML to JSON Converter fully supports multi-document YAML streams as defined in YAML 1.2. It converts each document separately into pretty-printed JSON blocks.

How does the tool handle YAML anchors and aliases?

The underlying yaml library resolves anchors and aliases during parsing, ensuring that repeated references in YAML are correctly dereferenced in the resulting JSON output.

Is my YAML data uploaded to a server during conversion?

No, the conversion process runs entirely in your browser using JavaScript. This means your YAML data never leaves your device, preserving privacy and security.

Can I convert complex keys or flow scalars with this tool?

Yes, the tool supports complex mapping keys and both flow and block scalars, complying with the YAML 1.2 specification, ensuring accurate JSON representation of various YAML constructs.

What indentation does the JSON output use?

The JSON output is pretty-printed using a 2-space indentation. This improves readability and is compatible with most JSON parsers and editors.