Tool
YAML Validator and Formatter
Validate YAML, format indentation, sort keys, and convert YAML to JSON without sending the document anywhere.
YAML validation with line feedback
Paste YAML to check syntax errors, highlight the failing line, normalize indentation, or convert the parsed document to JSON.
Common YAML mistakes
Tabs, inconsistent indentation, and unquoted special characters are the errors this page is designed to make easier to find.