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YAML to JSON Converter

Convert YAML to JSON and vice versa. Bidirectional conversion with validation!

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About YAML to JSON Converter

YAML to JSON Converter is a bidirectional online tool that converts between YAML (YAML Ain't Markup Language) and JSON (JavaScript Object Notation) formats. Perfect for configuration files, API responses, and data interchange between different systems.

Features

  • Bidirectional conversion (YAML ↔ JSON)
  • Support for nested objects and arrays
  • Automatic syntax validation
  • Pretty-printed output with proper indentation
  • One-click swap between conversion modes
  • Copy to clipboard
  • Character and line count
  • Load example data
  • 100% browser-based (no server uploads)

How to Use

  1. Paste your YAML or JSON in the input box
  2. Click "Convert to JSON" or "Convert to YAML"
  3. Use "Swap Direction" to reverse the conversion
  4. Copy the output to clipboard
  5. Use in your configuration files or applications

YAML Syntax

Key-Value Pairs:

name: John Doe
age: 30
active: true

Nested Objects:

address:
  city: New York
  country: USA

Arrays:

hobbies:
  - reading
  - coding
  - gaming

Use Cases

  • Configuration Files: Convert between YAML configs and JSON
  • Docker/Kubernetes: Work with container configurations
  • CI/CD Pipelines: Convert pipeline configurations
  • API Development: Transform API responses
  • Data Migration: Move data between systems
  • Documentation: Convert examples between formats

YAML vs JSON

YAML:

  • Human-readable and writable
  • Supports comments
  • Less verbose (no brackets/quotes)
  • Popular for configuration files

JSON:

  • Widely supported by programming languages
  • Strict syntax (easier to parse)
  • Native JavaScript format
  • Popular for APIs and data exchange

Example Conversion

YAML:

user:
  name: John Doe
  age: 30
  hobbies:
    - reading
    - coding

JSON:

{
  "user": {
    "name": "John Doe",
    "age": 30,
    "hobbies": ["reading", "coding"]
  }
}

Best Practices

  • Use consistent indentation (2 or 4 spaces)
  • Validate syntax before deployment
  • Use YAML for human-edited configs
  • Use JSON for programmatic data exchange
  • Add comments in YAML for documentation
  • Test converted output before using in production

Privacy & Security

All YAML to JSON conversion happens locally in your browser. Your configuration data is never sent to our servers or any third-party services. This ensures complete privacy and security for your sensitive configuration files.

Frequently Asked Questions

Does it support YAML comments?

YAML comments are stripped during conversion to JSON (JSON doesn't support comments).

Can I convert complex nested structures?

Yes! The converter handles deeply nested objects and arrays.

What about YAML anchors and aliases?

Basic YAML features are supported. Advanced features like anchors may not be fully supported.

Is the output valid?

Yes, the converter generates valid YAML and JSON that you can use directly.