JSON to TOON
Convert JSON to TOON (Token-Oriented Object Notation) format for more efficient LLM prompts. TOON reduces token usage by 30-60% compared to JSON while maintaining lossless conversion.
Privacy & Security
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How It Works
- 1
Paste your JSON data into the input field
- 2
The tool converts JSON to compact TOON format
- 3
View token count comparison and reduction percentage
- 4
Copy or download the TOON output for use in LLM prompts
Use Cases
Reduce API costs when sending data to LLMs like GPT-4, Claude, or Gemini
Fit more context into limited token windows
Speed up LLM processing with smaller input sizes
Optimize prompt engineering workflows
Create token-efficient data representations for AI applications
Frequently Asked Questions
What is TOON format?
TOON (Token-Oriented Object Notation) is a lightweight serialization format designed to reduce LLM token usage by 30-60% compared to JSON. It maintains human readability and supports lossless conversion.
How much can I reduce token usage?
Token reduction varies by data structure. Uniform arrays typically see 40-60% reduction, while nested or semi-uniform structures achieve 15-35% reduction. The tool shows exact savings for your data.
Is the conversion lossless?
Yes, TOON supports the full JSON data model. You can convert JSON to TOON and back without any data loss.
Can I use TOON with any LLM?
Yes, TOON can be used with any LLM that accepts text input (GPT, Claude, Gemini, etc.). Simply paste TOON-formatted data into your prompts to save tokens.
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