YAML / JSON Converter

Convert between YAML and JSON formats instantly. All processing happens in your browser.

Input YAML
Output JSON

YAML to JSON

Convert YAML configuration files to JSON format. Supports nested objects, arrays, booleans, numbers, and null values.

JSON to YAML

Convert JSON data to clean, human-readable YAML. Perfect for creating configuration files from JSON API responses.

Error Detection

Instant error reporting when your input contains syntax errors, helping you quickly identify and fix formatting issues.

How to Use the YAML / JSON Converter

  1. 1.Select your conversion direction: YAML to JSON or JSON to YAML.
  2. 2.Paste your input data into the left panel.
  3. 3.Click Convert to transform the data.
  4. 4.If there are errors, fix your input based on the error message shown below the input panel.
  5. 5.Click Copy to copy the converted output to your clipboard.

Frequently Asked Questions

What is YAML?

YAML (YAML Ain't Markup Language) is a human-readable data serialization format commonly used for configuration files. It uses indentation to represent hierarchy and is popular in Docker Compose, Kubernetes, Ansible, and CI/CD pipelines.

Why convert between YAML and JSON?

YAML is preferred for configuration files due to its readability, while JSON is used by APIs and JavaScript applications. Converting between them lets you move data between different tools and platforms seamlessly.

What YAML features are supported?

This converter supports key-value pairs, nested objects, arrays (using - syntax and inline []), strings, numbers, booleans (true/false), null values, and comments (# syntax). It covers the most common YAML patterns used in configuration files.

Is my data sent to a server?

No. All conversion happens locally in your browser using JavaScript. Your YAML and JSON data never leaves your device. The tool works completely offline once loaded.