TOON CONVERTERSerialization Optimized for LLM token efficiencyTOON CONVERTER
Convert TOON to JSON/YAML and vs.
About TOON
TOON (Token Object Object Notation) is a data serialization format designed specifically for Large Language Models (LLMs). It optimizes token usage, making data representation more efficient for AI processing while maintaining human readability.
TOON was created by the TOON team to address the inefficiencies of JSON and YAML when working with token-limited AI models. It is powered by the @toon-format/toon library.
This converter is an open-source utility that allows you to easily convert between JSON, YAML, and TOON formats directly in your browser. It is designed to be fast, private, and easy to use.
Why Token Optimization Matters
Cost Reduction
LLM providers charge by the token. By reducing the number of tokens required to represent your data, you directly reduce your API costs. TOON can often reduce token count by 20-40% compared to standard JSON.
Expanded Context
Every model has a maximum context window. More efficient data serialization means you can fit more data, examples, or history into a single prompt, enabling more complex reasoning and better results.
Faster Processing
Fewer tokens mean less computation for the model. This translates to lower latency and faster response times for your applications, improving the overall user experience.
Cleaner Prompts
TOON removes much of the syntactic noise (braces, quotes, commas) found in JSON. This helps the model focus on the actual data content rather than the formatting structure.
How to Use
- 1Input Data: Paste your JSON or YAML into the left editor, drop a file, or load from a URL.
- 2Select Formats: Choose your source format (if not auto-detected) and your desired destination format (e.g., TOON).
- 3Configure: Use the settings icon to adjust indentation, strictness, or flattening options to optimize the output further.
- 4Use Output: Copy the converted code or download it as a file to use in your LLM prompts or application.
Change Log
- Added Drag & Drop file support
- Added URL loading capability
- Improved UI with "Get Started" guide
- Enhanced mobile responsiveness
- Initial release
- Support for JSON, YAML, and TOON conversion
- Basic token estimation