YAML Validator
Validate YAML syntax. Get detailed error messages with line numbers.
About YAML Validator
YAML is widely used for configuration files (Docker Compose, Kubernetes, GitHub Actions, CI/CD) but its whitespace-sensitive syntax makes it easy to introduce subtle errors. The YAML Validator checks your YAML for syntax errors and reports exactly where the problem is with line and column numbers.
Valid YAML is pretty-printed so you can also use this as a formatter. The validator handles multi-document YAML files, anchors and aliases, multi-line strings, and all YAML 1.2 features.
A must-have tool for anyone working with DevOps configurations or any YAML-heavy workflow.
Features
- ✓Validates YAML syntax with line/column error locations
- ✓Pretty-prints valid YAML
- ✓Supports YAML 1.2 including anchors and aliases
- ✓Handles multi-document YAML files
- ✓Detects indentation and tab errors
Common Use Cases
- →Validating GitHub Actions workflow files
- →Checking Kubernetes manifests before applying
- →Verifying Docker Compose files
- →Debugging CircleCI or GitLab CI YAML configs