JSON to TOON Converter

Convert JSON into TOON with a local preview and configurable output options.

Sample

Delimiter

Indent

Strict validation

Tokenizer

Valid JSONRound trip checked: the TOON decodes back to identical data.

JSON input

1,230 chars, 59 lines

{
  "employees": [
    {
      "id": 101,
      "name": "Ava Patel",
      "department": "Engineering",
      "role": "Staff Engineer",
      "location": "London",
      "remote": true,
      "salary": 142000
    },
    {
      "id": 102,
      "name": "Ben Okafor",
      "department": "Design",
      "role": "Product Designer",
      "location": "Lagos",
      "remote": true,
      "salary": 98000
    },
    {
      "id": 103,
      "name": "Chloe Martin",
      "department": "Sales",
      "role": "Account Executive",
      "location": "Paris",
      "remote": false,
      "salary": 87000
    },
    {
      "id": 104,
      "name": "Diego Ruiz",
      "department": "Engineering",
      "role": "Backend Engineer",
      "location": "Madrid",
      "remote": true,
      "salary": 118000
    },
    {
      "id": 105,
      "name": "Emma Chen",
      "department": "Support",
      "role": "Support Lead",
      "location": "Toronto",
      "remote": false,
      "salary": 76000
    },
    {
      "id": 106,
      "name": "Farah Khan",
      "department": "Marketing",
      "role": "Content Strategist",
      "location": "Dubai",
      "remote": true,
      "salary": 91000
    }
  ],
  "generatedAt": "2026-10-27"
}

TOON output

employees[6]{id,name,department,role,location,remote,salary}:
  101,Ava Patel,Engineering,Staff Engineer,London,true,142000
  102,Ben Okafor,Design,Product Designer,Lagos,true,98000
  103,Chloe Martin,Sales,Account Executive,Paris,false,87000
  104,Diego Ruiz,Engineering,Backend Engineer,Madrid,true,118000
  105,Emma Chen,Support,Support Lead,Toronto,false,76000
  106,Farah Khan,Marketing,Content Strategist,Dubai,true,91000
generatedAt: 2026-10-27

Conversion and token counting run in your browser. Nothing is uploaded.

Token count: TOON vs JSON

Exact counts with o200k_base

TOON144 tokens
Minified JSON209 tokens
Pretty JSON (2 spaces)360 tokens

TOON uses 60% fewer tokens than pretty JSON and 31% fewer than minified JSON. Send the TOON.

Shape: 1 table (6 rows), 0 list arrays, 0 inline arrays. Tables are where TOON saves tokens; list arrays cost about as much as YAML.

Working with JSON to TOON Converter

Explore a compact text representation for structured data without editing the original object manually. Review how repeated fields and arrays are represented in the result. The workspace also lets you compare output size for the particular sample you provide.

How to use JSON to TOON Converter

Choose the conversion direction and enter the source data.
Review validation feedback and the converted output.
Copy the result and verify it with the system that will consume it.