About This Tool

This free online YAML to JSON and JSON to YAML converter allows you to seamlessly transform configuration files between these two popular formats. Designed for developers, system administrators, and DevOps professionals, our tool provides instant conversion with no data leaving your browser.

YAML (YAML Ain't Markup Language) and JSON (JavaScript Object Notation) are both human-readable data serialization formats. While JSON is widely used in web applications, YAML's cleaner syntax and support for comments make it popular for configuration files. Our converter preserves the structure and integrity of your data during conversion.

Key Features

Real-time Conversion

Convert between formats instantly as you type with no delay, enabling rapid iteration.

Complete Privacy

All processing happens in your browser - no data is sent to any server.

Error Detection

Get detailed syntax error messages to help you quickly fix malformed inputs.

Unlimited Usage

No file size limits, no registration required, and completely free forever.

Frequently Asked Questions

Is my data secure when using this converter?

Absolutely! All conversion happens directly in your browser. Your data never leaves your computer and is not stored or transmitted to any server.

What are the main differences between YAML and JSON?

YAML is more human-readable and supports comments, while JSON is more compact and widely supported in web applications. YAML uses indentation for structure, while JSON uses braces and brackets.

Can I convert large configuration files?

Yes, there are no file size limitations. However, extremely large files may take longer to process depending on your device's capabilities.

Does this converter preserve comments?

When converting from YAML to JSON, comments are not preserved since JSON doesn't support them. When converting from JSON to YAML, comments are not added.