JSON to TOON Converter

Convert JSON to Token-Oriented Object Notation (TOON) to reduce LLM token usage.

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What is TOON (Token-Oriented Object Notation)?

TOON stands for Token-Oriented Object Notation. It is a data serialization format specifically designed to optimize data for Large Language Models (LLMs) like GPT-4, Claude, and Llama.

When you send structured data (like JSON) to an LLM, standard formatting characters (braces {}, quotes "", commas ,) consume a significant number of tokens. TOON reduces this overhead by using a cleaner, indentation-based syntax similar to YAML but optimized for machine learning models.

Why use a JSON to TOON Converter?

  • Reduce Token Usage: Save up to 30-50% of tokens compared to standard JSON.
  • Lower Costs: Since LLM APIs charge per token, reducing the payload size directly lowers your bill.
  • Larger Context Window: Fit more data into the model's context window by removing unnecessary syntax.
  • Improved Readability: TOON is often more human-readable than minified JSON.

How to use this tool

Simply paste your JSON data into the input box on the left (or top on mobile). Click "Convert" to generate the equivalent TOON representation. You can then copy the output and use it in your prompts for ChatGPT, Claude, or any other LLM.

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