Next JSON

The Next JSON Toolbox

TOON to JSON Converter

Convert TOON format back to standard JSON - lossless bidirectional conversion

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JSON Tools

Nested JSON Parser and Viewer

Decode and view multiple level JSON strings with ease

Convert JSON To Oneline

Convert any JSON string to one line without spaces or indentation

JSON Schema Generator

Generate a JSON schema from a JSON string

JSON Schema to JSON

Convert a JSON schema to a JSON string

JSON Diff & Compare

Compare two JSON objects and highlight the differences

JSON to TOON Converter

Convert JSON to TOON format for LLM-optimized token efficiency

Array Tools

List to Array Converter

Convert input string to an array with different quote styles

How It Works

Convert TOON format back to standard JSON. Lossless conversion preserves all your data structure perfectly.

Key-Value Pairs

TOON key-value pairs convert directly to JSON object properties.

Input
name: Dragon Slayer
damage: 150
enchanted: true
element: fire
Output
{
  "name": "Dragon Slayer",
  "damage": 150,
  "enchanted": true,
  "element": "fire"
}

Indented Nesting

Indentation in TOON creates nested JSON objects automatically.

Input
character:
  name: Mystic Archer
  equipment:
    weapon: longbow
    armor: leather
Output
{
  "character": {
    "name": "Mystic Archer",
    "equipment": {
      "weapon": "longbow",
      "armor": "leather"
    }
  }
}

Array Notation

TOON arrays with [N] notation expand to full JSON arrays.

Input
skills[3]: fireball,ice storm,lightning
buffs[2]: strength,speed
Output
{
  "skills": ["fireball", "ice storm", "lightning"],
  "buffs": ["strength", "speed"]
}

Tabular to Objects

TOON tabular format {fields} expands to array of objects.

Input
party[3]{name,role,hp}:
  Luna,healer,80
  Thor,tank,150
  Zara,dps,100
Output
{
  "party": [
    {"name": "Luna", "role": "healer", "hp": 80},
    {"name": "Thor", "role": "tank", "hp": 150},
    {"name": "Zara", "role": "dps", "hp": 100}
  ]
}

Frequently Asked Questions

What is TOON format?

TOON (Token-Oriented Object Notation) is a compact, token-efficient format for LLMs. This tool converts it back to standard JSON for easier reading and processing.

How do I get TOON format?

Use our JSON to TOON converter to transform your JSON into TOON. It's useful when you've received TOON from an LLM or stored data in TOON format.

Will I lose any data?

No, the conversion is lossless. All data from the TOON format is faithfully restored to standard JSON.

What if my TOON is invalid?

The tool will show an error if the TOON format is malformed. Make sure your TOON follows the correct structure—check the JSON to TOON tool for the expected format.

Does this site store my data in the cloud?

No, this site does not store or share your data in the cloud. Your data remains private and is kept locally on your broswer.

This site lacks some useful features that I need. Can you add them?

Yes, we welcome all suggestions! Please feel free to share your feedback using the link at the bottom of the page.