What is YAML to JSON Tool?

A tool that converts YAML data to JSON format. When you need to convert configuration file formats or integrate data with APIs, you can do it instantly without manual rewriting.

• Real-time conversion from YAML to JSON
• Adjustable indent width for output formatting
• Instant error notification for YAML syntax issues

Useful for converting Kubernetes configs to JSON, changing OpenAPI spec formats, converting CI/CD pipeline settings, and many other scenarios.

How to Use

Enter YAML data in the left input area. It converts in real-time, displaying the JSON result on the right.

If there are syntax errors in the YAML, an error message appears so you can fix it and convert again.

Indent Settings

Choose the JSON output format.

• 2 Spaces (default) - Standard, readable format
• 4 Spaces - More spacious, readable format
• Minified - Removes line breaks and spaces to minimize data size

Conversion Example

Here's what YAML to JSON conversion looks like.

YAML input:

name: John
age: 30
skills:
  - JavaScript
  - Python

JSON output (2-space indent):

{
  "name": "John",
  "age": 30,
  "skills": [
    "JavaScript",
    "Python"
  ]
}

YAML vs JSON

YAML Features

• Represents data structure with indentation (spaces)
• Quotation marks for strings are generally optional
• Comments can be added with #
• Designed for human readability and writability

JSON Features

• Lightweight and fast to parse
• Native JavaScript support
• Widely used standard format in REST APIs
• Supported by virtually all programming languages

Common Use Cases

The YAML to JSON tool is used in scenarios such as:

• Converting Docker Compose configs to JSON format
• Changing Kubernetes manifest formats
• Unifying OpenAPI spec (Swagger) formats
• Migrating CI/CD pipeline configurations
• Backing up config files or migrating to other systems