CaseWren

YAML Formatter & Validator

Re-indent YAML canonically and catch parse errors early.

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About the YAML Formatter & Validator

YAML errors are whitespace errors: one tab character or a misaligned indent and your CI pipeline is red. This formatter parses your YAML and re-emits it in canonical 2-space style - if anything about the structure is ambiguous, you get a clear error instead of a silent misparse.

Because it goes through a real parser, formatting doubles as validation. A bonus "As JSON" output shows the exact data structure your YAML describes, which is the fastest way to spot a list that accidentally became a string.

How to use it

  1. 1Paste your YAML (CI config, docker-compose, k8s manifest...).
  2. 2Read the reformatted output - or the parse error, if the YAML is invalid.
  3. 3Check the "As JSON" output to confirm the data structure is what you intended.

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