TOON Playground
Paste JSON and compare TOON, CSV, YAML and XML with real-time token counts.
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How the TOON Playground works
The JSON is converted to TOON, CSV, YAML and XML, and the token count of each format is computed with the GPT tokenizer (o200k_base).
Practical Usage
Use it to evaluate which format lowers token cost in language-model API calls.
Facts about TOON
- TOON uses a header + tabular-row syntax that is more compact than JSON.
- Fewer tokens mean lower cost and latency in AI APIs.
- TOON converts back to JSON losslessly.