YAML Formatter
Format and normalize YAML with consistent indentation. Free browser tool.
Quick Answer
Paste YAML to format it with consistent indentation and proper structural hierarchy.
How to Use the YAML Formatter
- Use the input area to provide your data.
- The tool processes it instantly in your browser.
- Copy or download the result.
Frequently Asked Questions
- Does formatting preserve comments?
- This formatter parses and re-serializes YAML, which means comments are not preserved in the output. Back up your original if comments are important.
What is YAML Formatter?
A YAML formatter normalizes YAML documents by parsing the content and re-outputting it with consistent 2-space indentation, proper key-value alignment, and clean structural hierarchy. YAML (YAML Ain't Markup Language) is the standard configuration format for DevOps tools (Kubernetes, Docker Compose, Ansible, GitHub Actions, CircleCI), and inconsistent formatting can cause deployment failures, parsing errors, and confusion during code review. The formatter parses YAML into an internal representation and re-serializes it with uniform formatting, eliminating inconsistencies from manual editing, copy-paste operations, and multi-author contributions.
How to Use YAML Formatter
- Paste your YAML.
- Click Format YAML.
- View consistently formatted output.
- Copy the cleaned-up YAML.
Common Use Cases
- Normalizing Kubernetes manifests and Helm charts
- Cleaning up Docker Compose files
- Formatting GitHub Actions workflow files
- Standardizing Ansible playbook formatting
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