TOON Validator & Formatter

Validate TOON syntax, catch errors, and get optimization suggestions

100% Client-Side Processing

All validation happens in your browser. Your TOON data is never uploaded to our servers.

TOON Input

49 tokens
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Decoded JSON

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Quick Tips

  • ✓Use type annotations (:i, :b, :f) for integers, booleans, and floats
  • ✓Array syntax: arrayName[count]{fields}:
  • ✓Separate values with commas, rows with newlines
  • ✓Keep lines under 200 characters for readability
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Validation
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Feedback
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