TOON to JSON Converter
NewDecode TOON (Token-Oriented Object Notation) back into JSON, with strict array-length and table-row validation. Also converts JSON to TOON.
Implements the common subset of the TOON spec: objects, inline primitive arrays, tabular arrays and list arrays. Token figures are estimates (about 4 characters per token).
Frequently Asked Questions
What is TOON?
TOON is a compact, indentation-based format that declares array lengths and field names once, so structured data costs fewer LLM tokens than JSON.
Does it validate TOON?
Yes. Declared array lengths, table field counts and indentation are checked, and the error names the offending line.
Which TOON features are supported?
Objects, inline primitive arrays, tabular arrays, list arrays, quoted strings, and comma, tab or pipe delimiters.
Is my data uploaded?
No. Conversion runs entirely in your browser.
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