Indentation-sensitive
YAML structure depends on indentation, so invalid nesting or mixed list/object levels will fail instead of being guessed.
Input
Output
Formatted output will appear here.
Input
Output
Formatted output will appear here.
Paste or import YAML above and click Prettify to reformat it with consistent indentation and spacing — free, in your browser, with nothing uploaded to a server. Powered by Prettier.
YAML structure depends on indentation, so invalid nesting or mixed list/object levels will fail instead of being guessed.
Tabs, ambiguous booleans, unquoted colons, and accidental duplicate keys are common YAML review points after formatting.
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Paste your YAML, click Prettify, and indentation and spacing are normalized using Prettier.
Yes — invalid YAML fails to format and shows a parse error instead of guessing.
No. Formatting runs entirely in your browser.
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