🚀 Up to 30% Token Savings

Convert to TOON Format

Transform JSON, XML, YAML, CSV, and TOML into readable TOON format

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📚 Example Usage

JSON Example:

{
  "name": "John",
  "age": 30,
  "address": {
    "city": "New York",
    "zip": "10001"
  }
}

TOON Output:

name: John
age: 30
address:
  city: New York
  zip: 10001

What is TOON Formatter?

TOON Formatter is a free online tool that converts various data formats (JSON, XML, YAML, CSV, and TOML) into the human-readable TOON format. This tool helps developers and data analysts transform complex nested data structures into a simple, indented, easy-to-read format with up to 30% token savings compared to standard JSON format.

Key Features

  • 30% Token Savings: TOON format uses significantly fewer tokens than JSON, reducing LLM costs
  • Multiple Format Support: Convert JSON, XML, YAML, CSV, and TOML to TOON format
  • Client-Side Processing: All conversions happen in your browser - your data never leaves your computer
  • No Installation Required: Works directly in your web browser without any downloads
  • File Upload Support: Upload files from your computer for quick conversion
  • Copy & Download: Easily copy formatted output or download as .toon file
  • Dark Mode: Eye-friendly dark mode for comfortable viewing
  • Free to Use: No registration, no limits, completely free

Why Use TOON Format?

TOON format provides a clean, hierarchical view of your data with proper indentation. It's perfect for:

  • Reducing LLM token costs by up to 30% compared to JSON
  • Debugging complex data structures
  • Analyzing API responses
  • Understanding nested configurations
  • Sharing readable data with team members
  • Documentation and reporting
  • Optimizing prompts for ChatGPT, Claude, and other AI models

How to Use TOON Formatter

  1. Select your input format (JSON, XML, YAML, CSV, or TOML)
  2. Paste your data or upload a file
  3. Click "Convert to TOON" button
  4. View the formatted TOON output
  5. Copy or download the result

Privacy & Security

Your privacy is our priority. TOON Formatter processes all data locally in your browser using JavaScript. No data is sent to any server, ensuring complete privacy and security for sensitive information.

Frequently Asked Questions

How does TOON format save 30% tokens?

TOON format removes unnecessary JSON syntax like quotes around keys, commas, and curly braces, while maintaining readability. This reduction in characters translates to significant token savings when using LLMs like ChatGPT, Claude, or other AI models, potentially saving up to 30% on API costs.

What formats can I convert to TOON?

You can convert JSON, XML, YAML, CSV, and TOML formats to TOON format using our tool.

Is my data safe?

Yes! All processing happens locally in your browser. We never store or transmit your data to any server.

Do I need to create an account?

No account needed. TOON Formatter is completely free to use without any registration.

Can I use this tool offline?

Once the page is loaded, the conversion works entirely in your browser, so you can use it with limited connectivity.

Is there a file size limit?

The tool can handle large files, but very large datasets may slow down your browser depending on your device's capabilities.