JSON to TOON Converter

Enter or edit JSON data on the left, and the converted TOON format result will be automatically displayed on the right.

Token Statistics

JSON Tokens

0

TOON Tokens

0

Saved

0%

JSON Input

TOON Output

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JSON TOON Converter Features

Our JSON TOON converter provides powerful bidirectional conversion functionality, allowing you to easily convert between JSON and TOON formats. Supports multiple delimiter options (comma, Tab, pipe), customizable indentation, length marker display, and real-time Token statistics and savings percentage, so you can clearly see the conversion results. All conversions happen locally in your browser, protecting your data privacy.

Use Cases

LLM Prompt Optimization: Convert JSON data to TOON format to reduce 30-60% token usage
API Data Processing: Convert JSON data from API responses to more concise TOON format
AI Model Training: Use TOON format to reduce token costs for training data
Data Format Conversion: Bidirectional conversion between JSON and TOON to meet different needs

Why Convert JSON to TOON?

Token Efficient TOON Format

The design goal of TOON format is to reduce token costs in LLM applications. Through its concise syntax structure, it can significantly reduce token usage while maintaining data integrity. This means that the same data content requires fewer tokens when sent to LLMs in TOON format, thereby reducing API call costs.

Privacy First Converter

This tool uses a completely local processing approach. All conversion operations are executed in your browser, and data is never uploaded to any server. Whether it's sensitive business data or personal information, you get complete privacy protection and can use it with confidence.

Blazing Fast TOON Conversion

Since the conversion process is executed entirely locally without network transmission, the conversion speed is extremely fast. After you input JSON, the TOON format result appears almost instantly with no delay or waiting time, providing a smooth user experience.

JSON vs TOON

The core advantage of TOON format lies in removing redundant symbols from JSON. It eliminates brackets, square brackets, quotes, and other punctuation marks, using a tabular structure to present data. This design significantly reduces the number of tokens required for the same content in TOON format, especially when processing arrays with similar structures.

Token Efficiency Snapshot

Actual test data shows that TOON format has significant advantages in token usage efficiency. According to multiple benchmark results, TOON can save an average of 30% to 60% of tokens compared to JSON. In real-world cases, some daily data analysis scenarios can achieve close to 60% token savings with TOON format, which is quite cost-effective for applications that frequently use LLM APIs.

When NOT to Use TOON

While TOON can bring significant token savings in many scenarios, it's not a one-size-fits-all solution. In certain specific situations, traditional JSON format may be more appropriate:

Complex hierarchical structures: When data contains multiple levels of nesting, irregular object structures, or significant variations in fields across elements, JSON's flexibility makes it a better choice. TOON's advantages are primarily evident when processing arrays with consistent structures.
Standardized data exchange: TOON's purpose is to optimize token efficiency for LLM prompts, not to replace JSON as a general data format. In scenarios requiring integration with external systems, providing public APIs, or long-term data storage, JSON remains the industry standard with better compatibility and support.

Use Example

JSON Example

{
  "array": [
    1,
    2,
    3
  ],
  "boolean": true,
  "color": "gold",
  "null": null,
  "number": 123,
  "object": {
    "a": "b",
    "c": "d"
  },
  "string": "Hello World"
}

TOON Example

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About TOON Format

TOON (Token-Oriented Object Notation) is a new data format that is more concise than JSON and especially suitable for AI processing.
TOON format uses comma-separated values and indentation to represent nested structures, making it easier to read and process than JSON.
TOON format can fully preserve all data types in JSON, including arrays, objects, strings, numbers, booleans, and null.

Frequently Asked Questions

What is TOON format?

TOON (Token-Oriented Object Notation) is a data serialization format designed specifically for LLM prompts. It reduces token usage by 30-60% compared to JSON while maintaining readability and structure. The TOON format uses a tabular format for arrays and minimal TOON syntax for objects, making JSON to TOON conversion highly efficient.

How much can I save with TOON?

TOON typically saves 30-60% on LLM tokens compared to JSON. For large datasets or API responses, this can translate to significant cost savings when using APIs like GPT-4 or Claude. The exact savings depend on your data structure.

Is TOON compatible with all LLMs?

Yes, TOON works with all major LLMs including GPT-4, Claude, Gemini, and LLaMA. Since TOON is a text format, any LLM can read and understand it. Most modern LLMs can parse TOON format with simple instructions in your prompt.