TOON Toolkit

TOON Toolkit helps developers convert JSON into TOON format to reduce token usage and optimize Large Language Model (LLM) costs. When working with AI models like GPT-4o, GPT-4.1, Claude, or other LLMs, token usage directly affects cost and performance. TOON Toolkit allows you to quickly transform verbose JSON structures into a compact TOON representation that can significantly reduce token counts. Key Features: - Convert JSON → TOON instantly • Convert TOON → JSON • Real token counting using modern OpenAI encodings • Token savings estimation • Cost estimation per model • Support for multiple model encodings • Clean developer-friendly interface • Works completely offline • No data collection Why use TOON? JSON structures can be verbose and inefficient when used in prompts for AI models. TOON is a compact representation that helps reduce unnecessary tokens while keeping structured information readable. With TOON Toolkit you can: - Optimize prompts for LLMs • Reduce API costs • Compare token usage • Experiment with structured prompt formats • Improve efficiency in AI pipelines Perfect for: - AI developers • Prompt engineers • LLM researchers • Backend developers • Anyone optimizing token usage Privacy First TOON Toolkit processes all data locally in your browser. No information is transmitted to external servers. Start optimizing your AI prompts today. Support the project: https://buymeacoffee.com/laudisio