JSON to TOON Converter
Optimize your LLM prompts with Token-Oriented Object Notation
Why Use TOON Format?
- ✓Save 30-60% on LLM tokens compared to formatted JSON for uniform arrays
- ✓LLM-friendly validation with explicit length markers and field headers
- ✓Human-readable format that combines YAML-like structure with CSV-like compactness
- ✓Perfect for passing structured data to Claude, GPT, and other LLMs
Benchmarks show 73.9% accuracy using 39.6% fewer tokens compared to JSON's 69.7% accuracy. Learn more at toonformat.dev