Runs 100% in your browser
Your data never leaves your device. zero uploads.
Convert JSON into TOON with a local preview and configurable output options.
Explore a compact text representation for structured data without editing the original object manually. Review how repeated fields and arrays are represented in the result. The workspace also lets you compare output size for the particular sample you provide.
Convert an array of objects with the same keys and inspect how the resulting TOON represents the shared field names.
Compression and token savings vary by data and tokenizer. Validate the result with the TOON version used by your downstream application.
Choose the conversion direction and enter the source data. Review validation feedback and the converted output. Copy the result and verify it with the system that will consume it.
Compression and token savings vary by data and tokenizer. Validate the result with the TOON version used by your downstream application.
No registration, no tracking of your content, no server uploads. Don't just take our word for it:
Your files and text are processed entirely on your device. Nothing is ever sent to us.
Once loaded, this tool keeps working with your Wi-Fi turned off. Try it.
Open your browser's DevTools → Network tab. You'll see zero requests carrying your data.
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