JSON to TOON converter

Paste JSON on the left and get TOON on the right — the same data model, usually 30–60% fewer tokens when your data contains uniform arrays of objects. The receipt below the converter shows your exact savings, counted with the same tokenizers OpenAI models use, not an estimate.

Conversion runs entirely in your browser using the official TOON encoder. Nothing is uploaded, so it is safe for production payloads and API keys embedded in fixtures.