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TOON to JSON Converter

Convert TOON format back to standard JSON for use in applications

TOON Input
Paste your TOON data here
JSON Output
Converted JSON output
Use in Your Code
Integrate this conversion into your application with our NPM package

1. Install the package

npm install @toonparse/core

2. Use in your code

import { fromToon } from '@toonparse/core';

const toonData = `users[2]{id,name,role}:
  1,Alice,admin
  2,Bob,user`;

const json = fromToon(toonData);
console.log(json);
// { users: [{ id: 1, name: 'Alice', role: 'admin' }, ...] }

💡 The @toonparse/core package includes token counting, format comparison, and eligibility checking utilities.

Convert TOON Back to JSON

While TOON is optimal for LLM prompts, you may need to convert TOON data back to JSON for:

  • Application processing - Use in JavaScript/Python/etc.
  • API integration - Most APIs expect JSON
  • Database storage - Store in JSON columns
  • Validation - Verify TOON structure is correct

Lossless Conversion

TOON is a lossless representation of JSON. Converting TOON → JSON → TOON will always produce identical results. All data types are preserved:

  • Objects and nested objects
  • Arrays (including uniform arrays)
  • Strings, numbers, booleans, null