Free YAML Formatter — Format, Validate & Convert YAML Online
The YAML Formatter helps you format, validate, and beautify YAML data. YAML (YAML Ain't Markup Language) is widely used for configuration files in Docker, Kubernetes, GitHub Actions, and many other tools.
Paste your YAML and instantly see it formatted with proper indentation. You can also convert YAML to JSON format for use in APIs and JavaScript applications.
The tool validates your YAML in real-time, showing you whether your data is valid or contains errors. This is invaluable when debugging configuration files.
Everything runs in your browser — your data never leaves your computer.