✅ Validate
Check YAML syntax with line-precise error messages and highlighting.
🎨 Format
Prettify YAML with consistent 2-space indentation.
📦 Minify
Strip comments and compress whitespace for compact output.
🔄 Convert
Convert between YAML and JSON in either direction.
Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format commonly used for configuration files, Docker Compose, Kubernetes manifests, CI/CD pipelines, and more.
Is my data sent to any server?
No. All validation, formatting, and conversion happens entirely in your browser. Your data never leaves your device.
What YAML features are supported?
This tool supports the full YAML 1.2 specification via the js-yaml library, including anchors, aliases, multi-document streams, and custom tags.