YAML Formatter and Validator

Validate pasted YAML and format it with consistent indentation using a local browser parser.

Need help with the calculation?
Ask AI about this article
The assistant can make mistakes. Check important calculations and decisions. By sending a message, you agree to the Terms of Use and acknowledge the Privacy Policy.

This tool validates pasted YAML and rewrites it with consistent indentation. It is useful for config files, CI snippets, front matter and Kubernetes-style examples.

Output

Format mode returns copy-ready YAML. Validate mode returns a compact validity message while keeping any parser warnings or errors separate from the copied result.

Scope

The calculator uses a local js-yaml library from /libs/. Application-specific schema validation is not included.