---
title: "JSON to TOON Converter - Convert JSON to TOON format"
description: "Convert JSON data to TOON format. It is useful when you want a more token-efficient representation for LLM workflows or a more compact format for tabular data."
canonical_url: "https://web-toolbox.dev/en/tools/json-to-toon"
meta:
  author: K
  "og:description": "Convert JSON data to TOON format. It is useful when you want a more token-efficient representation for LLM workflows or a more compact format for tabular data."
  "og:image": "https://web-toolbox.dev/og/en/tools/json-to-toon-c8329505.png"
  "og:image:alt": "JSON to TOON Converter"
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  "og:title": "JSON to TOON Converter - Convert JSON to TOON format"
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> Index of every page on this site: [llms.txt](https://web-toolbox.dev/llms.txt)

# **JSON to TOON Converter**

Convert JSON to TOON for LLM prompts

**JSON data**

**TOON data**

Read-only

## What is JSON to TOON Converter?

JSON to TOON Converter turns JSON data into TOON. TOON is a compact format for data sent to LLMs, and it can turn arrays of objects with the same fields into tables. Use it to review data before adding it to a prompt.

## How to Use

1. Paste JSON data into the input.
2. Review the TOON result.
3. Change the delimiter or indent width as needed.

## Main Settings

### Delimiter

Choose the character that separates rows and columns in tables. A comma is easy to read, while a tab prioritizes token efficiency. A pipe makes the separators easier to follow by eye.

### Indent Width

Choose the indentation width for nested objects. The setting matters more as the data gets deeper.

## Input and Output Example

```json
{
  "users": [
    { "id": 1, "name": "Alice", "role": "admin" },
    { "id": 2, "name": "Bob", "role": "user" }
  ]
}
```

This JSON is represented in TOON as follows.

```text
users[2]{id,name,role}:
  1,Alice,admin
  2,Bob,user
```

## Use Cases

- Making JSON for an LLM as compact as possible
- Showing array data in a form close to a table
- Preparing API responses or log data for a prompt

## Things to Keep in Mind

- Some tools and models cannot read TOON. Check that the target tool or model supports it
- TOON is most effective for arrays of objects with the same fields. Deeply nested or non-uniform data may be smaller as JSON

**How was your experience?**

Last updated: August 25, 2026

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```json
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```

## Sitemap

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