About TOON Converter
Reduce LLM tokens by converting JSON to TOON and back.
What is TOON?
TOON (Token-Oriented Object Notation) is a compact data format designed for Large Language Models. It minimizes repeated keys and punctuation overhead, often reducing token usage by 30–60% compared to JSON.
Why TOON Converter?
TOON Converter is a free, fast, and privacy-first tool that provides lossless conversion between JSON and TOON formats. It's optimized for AI prompts and data pipelines, making it ideal for developers working with Large Language Models.
Benefits
TOON Converter offers significant advantages for AI and LLM applications. It reduces token usage by 30–60% for uniform arrays and tabular data, enabling you to send more information within token limits. All conversion happens instantly in your browser, ensuring your data never leaves your device. The tool supports two-way conversion with built-in validation for safer data pipelines, and features a themeable UI with history tracking and file workflow support.