YAML Formatter & Validator
Validate and beautify YAML syntax structures. Fast, free, and fully client-side.
Input source
Formatted output
How the YAML Formatter & Validator Works
Formats and validates YAML documents, ensuring strict indentation alignment (2-space standard), list hyphens, and dictionary key consistency.
Usage Example
Validates Docker Compose, Kubernetes manifests, and GitHub Actions workflow YAML files.
Frequently Asked Questions
Why is indentation so critical in YAML?
Unlike JSON or XML which use brackets or tags, YAML relies strictly on whitespace indentation to define data hierarchy; incorrect spaces create parsing errors.