YAML ↔ JSON Converter

Convert between YAML and JSON formats with our powerful bidirectional converter. Perfect for configuration files, data processing, and API development.

YAML ↔ JSON Converter

Conversion Mode

JSON Indent Size

YAML Input

Valid

Characters: 237 | Lines: 17

JSON Output

Converted JSON will appear here...

Quick Examples

Seamless YAML ↔ JSON conversion!

Perfect for configuration files, CI/CD pipelines, and data processing workflows

What is YAML?

YAML (YAML Ain't Markup Language) is a human-readable data serialization standard that is commonly used for configuration files and data exchange between applications with different data structures.

YAML is more readable than JSON for humans
Uses indentation to represent nested structures
Supports comments, which JSON does not
No quotes required for most strings
Commonly used in Docker, Kubernetes, and CI/CD pipelines

YAML vs JSON Comparison

YAML Example

# Configuration file
server:
  host: localhost
  port: 8080
  ssl: true

database:
  type: postgresql
  host: db.example.com
  credentials:
    username: admin
    password: secret

features:
  - authentication
  - logging
  - monitoring

JSON Equivalent

{
  "server": {
    "host": "localhost",
    "port": 8080,
    "ssl": true
  },
  "database": {
    "type": "postgresql",
    "host": "db.example.com",
    "credentials": {
      "username": "admin",
      "password": "secret"
    }
  },
  "features": [
    "authentication",
    "logging", 
    "monitoring"
  ]
}

YAML Syntax Guide

Key-Value Pairs

Basic structure using colon and space.

name: John Doe
age: 30
city: New York

Nested Objects

Use indentation (2 or 4 spaces) to create nested structures.

person:
  name: John
  address:
    street: 123 Main St
    city: Boston

Arrays/Lists

Use dashes (-) to create arrays.

fruits:
  - apple
  - banana
  - orange

Comments

Use # for comments (not supported in JSON).

# This is a comment
name: John  # Inline comment

Multi-line Strings

Use | for literal blocks or > for folded blocks.

description: |
  This is a multi-line
  string that preserves
  line breaks.

Common Use Cases

⚙️

Configuration Files

Application configs, CI/CD pipelines, and deployment settings

🐳

Docker & Kubernetes

Container orchestration, service definitions, and deployments

🔄

CI/CD Pipelines

GitHub Actions, GitLab CI, Jenkins, and other automation tools

📊

Data Processing

ETL pipelines, data transformation, and schema definitions

🌐

API Documentation

OpenAPI specs, Swagger definitions, and API configurations

📝

Infrastructure as Code

Terraform, Ansible, CloudFormation, and infrastructure definitions

YAML Best Practices

✅ Do's

Use consistent indentation (2 or 4 spaces)
Quote strings that might be ambiguous
Use meaningful key names
Add comments to explain complex sections
Validate YAML before deployment
Use version control for configuration files

❌ Don'ts

Mix tabs and spaces for indentation
Use overly complex nested structures
Store sensitive data in plain text
Ignore YAML syntax errors
Use special characters without quoting
Create extremely long lines

Common YAML Gotchas

Boolean Values

Be careful with values that might be interpreted as booleans.

❌ Unexpected:

norway: NO  # Interpreted as false
sweden: ON  # Interpreted as true

✅ Better:

norway: "NO"  # String
sweden: "ON"  # String

Numeric Strings

Numbers might be interpreted differently than expected.

❌ Unexpected:

version: 1.0  # Number
zip_code: 01234  # Number (loses leading zero)

✅ Better:

version: "1.0"  # String
zip_code: "01234"  # String