YAML Formatter & Validator
Paste YAML to check it's valid and get a cleanly reformatted version, with a clear error when something's off.
Input
Formatted output
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Frequently asked questions
Does this catch indentation errors?+
Yes. YAML is whitespace-sensitive, so a misplaced indent is exactly the kind of error this tool flags.
Can I convert YAML to JSON here?+
Not on this tool. Format and validate the YAML here, then use the JSON Formatter for the converted structure.
Does it support multi-document YAML files?+
Yes, files with multiple documents separated by --- are parsed and validated individually.