TOON (Token-Oriented Object Notation)

Token-Oriented Object Notation (TOON) is a compact data format designed to reduce token usage when passing structured information to Large Language Models (LLMs), achieving 30-60% fewer tokens compared to standard JSON. 

It simplifies syntax by eliminating unnecessary punctuation and using a more readable structure, making it ideal for applications that frequently interact with LLMs

https://github.com/toon-format/toon

Example:

JSON:  (41 Token)

{
  "users": [
    { "id": 1, "name": "Alice", "role": "admin" },
    { "id": 2, "name": "Bob", "role": "user" }
  ]
}

TOON: (21 token)

users[2]{id,name,role}:
  1,Alice,admin
  2,Bob,user

User the tool https://toonifyit.com/