YAML Syntax Validator & JSON Converter
Validate YAML configuration syntax patterns, detect tab spacing errors, and translate clean structured YAML to JSON.
Frequently Asked Questions
What is YAML and Why is it Strict?
YAML (a recursive acronym for "YAML Ain't Markup Language") is a human-readable data serialization standard. It is widely used for configuration files in modern workflows (like Docker Compose configs, Kubernetes manifests, and GitHub Actions pipelines) because of its minimal notation and comments support.
Strict YAML Indentation Constraints
Because YAML relies entirely on whitespace indentation to define structure instead of braces ({}) or brackets ([]), its parsing rules are extremely strict:
- No Tabs: Tab characters (
\t) are explicitly prohibited in YAML indentation. You must always use space characters (typically 2 or 4 spaces). - Colon Spacing: All key-value separators must have a space after the colon (
key: value). Writingkey:valueis a common syntax error. - Strict Parent Alignment: Child properties must be indented further than their parent properties to define hierarchy correctly.
YAML to JSON Conversion
Because both YAML and JSON represent structured keys and values, they are highly compatible. Converting YAML configs to JSON is a standard workflow when feeding payload data to web applications, APIs, or database scripts that only support standard JSON schemas.