Formalint

Config cleanup

YAML Formatter

Clean YAML indentation, trim noisy whitespace and catch common structure problems before config files reach production.

Open JSON formatter Open Python formatter

Input

0 bytes

Result

Ready

JSON FormatterFormat API payloads XML FormatterClean XML documents Python FormatterNormalize Python snippets

Reference notes

YAML for configuration files

Indentation first

YAML is whitespace-sensitive. This cleaner converts tabs, trims trailing spaces and keeps list indentation readable.

Local processing

Configuration snippets are processed in the browser. Formalint does not upload pasted YAML to a backend.

Common checks

The validator flags tabs, odd indentation, duplicate mapping keys in the same block and unbalanced brackets or quotes.