YAML & JSON Converter

📖 How to Use

YAML to JSON: Enter YAML content on the left, JSON output appears in real-time on the right. Supports standard YAML 1.2 format.

JSON to YAML: Click the direction switch button to change to "JSON → YAML", then paste JSON content for automatic YAML conversion.

Both panels support one-click copy and file download.

YAML vs JSON

YAML (YAML Ain't Markup Language) uses indentation for structure and is commonly used in configuration files (Docker Compose, Kubernetes, Ansible, etc.). JSON uses braces and quotes and is the most widely used data exchange format for web APIs. They can be converted losslessly.

🎯 Use Cases

• Config Migration: Convert JSON config files to YAML for Docker/K8s/Ansible
• API Debugging: Convert API JSON responses to YAML for easier reading
• Data Exchange: Convert between data formats for different systems
• Learning: Compare YAML and JSON syntax side by side

❓ FAQ

Can YAML and JSON be fully converted both ways?

In most cases, yes. YAML is a superset of JSON and supports all JSON data types. However, some advanced YAML features (anchors, aliases, multi-line strings) don't have JSON equivalents.

Why is my YAML failing to parse?

Common issues: inconsistent indentation (use spaces, not tabs), missing space after colon, unquoted strings with special characters. This tool shows detailed error locations.

Can it handle large files?

Processing is done in the browser, limited by available memory. Files up to a few hundred KB work fine. For very large files, use a dedicated local tool.