YAML Formatter

Validate and beautify YAML configuration files with instant syntax checking. Supports Kubernetes, Docker Compose, GitHub Actions, Ansible, and all YAML formats.

YAML Input

Formatted YAML

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Frequently Asked Questions

It validates YAML syntax, reports errors with line numbers, and reformats your YAML with consistent indentation and style.

Any YAML file including Kubernetes manifests, Docker Compose files, GitHub Actions workflows, Ansible playbooks, and more.

Errors are shown with the line number and description, making it easy to locate and fix issues in your YAML.

Yes. All processing happens in your browser using JavaScript. No data is sent to any server.

You can choose 2-space or 4-space indentation for the formatted output.

Yes. Comments starting with # are preserved and maintain their positions relative to the data they document.

Yes. YAML anchors (&) and aliases (*) are fully supported and preserved during formatting.

Both literal (|) and folded (>) multi-line string styles are preserved correctly with proper indentation.

It validates YAML syntax only, not Kubernetes-specific schemas. For schema validation, use a Kubernetes validator.

Yes. Perfect for formatting GitHub Actions, GitLab CI, CircleCI, Jenkins, and other CI/CD configuration files.

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