AI-Optimized Format

JSON ↔ TOON Converter

Convert between JSON and TOON (Token-Oriented Object Notation). Reduce LLM token usage by 30-60% with AI-optimized data format.

100% Client-Side Processing
Works Offline
No Data Uploaded
JSONTOON

JSON Input

TOON Output

Output will appear here...

What is TOON?

TOON (Token-Oriented Object Notation) is an AI-native serialization format designed to reduce LLM token usage. It declares data structure once and encodes records compactly, eliminating repeated field names and punctuation.

Fewer Tokens

30-60% token reduction for structured data

Better Efficiency

Faster parsing and improved LLM accuracy

Human Readable

CSV-like tables, concise declarations

Example:

JSON (verbose):

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

TOON (compact):

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