Free YAML Converter & Validator

Convert between YAML and JSON formats, validate YAML syntax, and format your configuration files

Start Converting YAML

YAML Conversion Features

🔄

Bidirectional Conversion

Convert YAML to JSON and JSON to YAML seamlessly. Preserve data structure and formatting.

✅

YAML Validation

Validate YAML syntax with detailed error messages. Catch indentation issues and structural problems.

🎯

Format Preservation

Maintain proper YAML formatting with correct indentation and structure during conversion.

YAML ↔ JSON Conversion Examples

YAML Input

name: QuickFormat
version: 1.0.0
features:
  - validation
  - conversion
  - formatting
config:
  port: 8080
  debug: true
  database:
    host: localhost
    port: 5432

JSON Output

{
  "name": "QuickFormat",
  "version": "1.0.0",
  "features": [
    "validation",
    "conversion",
    "formatting"
  ],
  "config": {
    "port": 8080,
    "debug": true,
    "database": {
      "host": "localhost",
      "port": 5432
    }
  }
}

YAML Best Practices

✓ Do

• Use consistent indentation (2 or 4 spaces)
• Quote strings that contain special characters
• Use meaningful key names
• Keep lines under 80 characters when possible
• Use comments to explain complex configurations

✗ Don't

• Mix tabs and spaces for indentation
• Use tabs for indentation (use spaces only)
• Leave trailing whitespace
• Use overly complex nested structures
• Forget to validate your YAML before deployment

Common YAML Use Cases

Configuration Files

• Docker Compose files
• Kubernetes manifests
• CI/CD pipeline configurations
• Application settings
• Ansible playbooks

Data Exchange

• API responses and requests
• Data serialization
• Configuration templates
• Documentation examples
• Test data files

YAML FAQ

What does YAML stand for?

YAML stands for "YAML Ain't Markup Language" (originally "Yet Another Markup Language"). It's a human-readable data serialization standard commonly used for configuration files.

YAML vs JSON: Which should I use?

YAML is more human-readable and supports comments, making it great for configuration files. JSON is more compact and faster to parse, making it better for APIs and data exchange.

Can I convert large YAML files?

Yes! Our converter handles files up to 200KB in size. For larger files, consider breaking them into smaller, more manageable pieces.

Does the converter preserve comments?

When converting from YAML to JSON, comments are removed since JSON doesn't support comments. However, the data structure and values are preserved accurately.

Convert Your YAML Files Now

Free YAML to JSON conversion with validation and formatting. Try it now!

Start Converting