Input

Output

How does it work?

This tool converts between JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language) formats. Both formats are commonly used for configuration files and data interchange.

Important Note:

This is a basic converter with limited support for advanced YAML features. For complex conversions or production use, consider using a dedicated library like js-yaml.

Examples

JSON Format

{
  "name": "John Doe",
  "age": 30,
  "isActive": true,
  "address": {
    "street": "123 Main St",
    "city": "Anytown",
    "state": "CA"
  },
  "hobbies": ["reading", "cycling", "swimming"]
}

YAML Format

name: John Doe
age: 30
isActive: true
address:
  street: 123 Main St
  city: Anytown
  state: CA
hobbies:
  - reading
  - cycling
  - swimming

JSON vs YAML: Key Differences

FeatureJSONYAML
SyntaxCurly braces and bracketsIndentation-based
CommentsNot supportedSupported with # symbol
Multiline stringsRequires escape charactersNatively supported
Human readabilityGood with formattingExcellent
Data typesBasic types onlyExtended types (timestamps, etc.)

When to use each format

Use JSON when:

  • Working with web APIs and JavaScript
  • Strict data validation is required
  • Maximum compatibility is needed
  • Performance is critical

Use YAML when:

  • Creating human-readable configuration files
  • Comments are needed to explain configuration
  • Working with complex hierarchical data
  • Using in DevOps tools like Docker, Kubernetes, or Ansible

Note:

While this tool handles basic conversion between JSON and YAML, it may not support all advanced YAML features like anchors, aliases, or custom tags. For complex documents, verify the conversion results carefully.

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