Catch indentation and flow errors
YAML structure depends on indentation, balanced collections, and valid mappings. Validation catches these mistakes early.
YAML Validator
Validate YAML syntax locally and get readable parser errors before using configuration files.
YAML validator
Check YAML syntax and duplicate mapping keys.
Valid YAML
The document parsed without errors.
YAML input
Syntax, not application rules
A valid document may still contain keys or values unsupported by the application that consumes it.