YAML Linter
Click 'Validate' to check syntax.
JSON Output
YAML for DevOps & Kubernetes
YAML (YAML Ain't Markup Language) is the standard for configuration files in modern DevOps stacks, including Docker Compose, Kubernetes, and GitHub Actions. It is strictly whitespace-sensitive, meaning one wrong indentation can crash your entire deployment pipeline.
Format & Validation Features
- Syntax Check: We use the rigorous
js-yamllibrary to validate your structure against the YAML spec. - YAML to JSON: Instantly convert YAML configs into JSON to test them with APIs or JavaScript applications.
- 2-Space Indentation: The "Prettify" button forces the standard 2-space indentation rule, fixing mixed tab/space errors.
Troubleshooting Common Errors
"Bad Indentation" Error
YAML forbids tabs. You must use spaces. Our formatter automatically replaces tabs with spaces to fix this.