Validators & Parsers Tool
YAML Validator & Formatter
Validate, parse, and pretty-print/beautify your YAML configurations client-side. Fast, secure, and free.
YAML Validator & Formatter
💡 Frequently Asked Questions
Q: How does the YAML Validator work?
A: It parses the YAML source code locally in your browser. If there is a syntactic error (like mixing tabs with spaces, incorrect indentation level, or duplicated keys), the validator pinpoints the exact line number, column, and description of the syntax issue.
Q: Is YAML indentation sensitive?
A: Yes, YAML relies heavily on white-space indentation to construct key-value scopes and lists. You must always use spaces (typically 2 or 4) for nesting. **Using tab characters is illegal in YAML** and will trigger validation errors.