What is JSON to YAML Tool?

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

• Real-time conversion from JSON to YAML
• Customizable quotation and key sort order
• Instant error notification for JSON syntax issues

Useful for creating Kubernetes and Docker Compose config files, defining CI/CD workflows, converting API responses, and many other scenarios.

How to Use

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

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

Conversion Options

Customize the output format for your needs.

With Quotes

YAML normally interprets strings without quotation marks, but enabling this option encloses string values in quotes. Useful when you want to explicitly treat strings containing special characters or numbers as strings.

Sort Keys

Sorts keys alphabetically in the output. Helpful for large datasets or files edited by multiple people where you want consistent ordering.

JSON Basics

JSON is a lightweight and readable data format. Here are the basic rules:

• Strings are enclosed in "" (double quotation marks)
• Objects are enclosed in {}, arrays in []
• Keys and values are separated by : (colon)
• Multiple data items are separated by , (comma, not needed after the last item)

Simple example:

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

For more details, see Working with JSON - MDN and JSON - MDN.

YAML Features

YAML is a more human-readable and writable format than JSON.

• Represents data structure with indentation (spaces)
• Quotation marks for strings are generally optional
• Comments can be added with #
• Multi-line strings can be written concisely with | or >

Conversion example:

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

YAML is widely used in Kubernetes, Docker Compose, GitHub Actions, and many other tools.