Online JSON ↔ TOON Converter

Looking to convert data between JSON and TOON? This tool instantly transforms your structure from one format to the other, preserving types, structure, and readability.

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What is TOON?

TOON (TOML-like Object Notation) is a human-friendly configuration format designed to be cleaner than JSON and simpler than TOML. It uses key–value pairs, sections, and natural indentation to express structured data without the heavy braces and quotes required by JSON.

TOON is becoming popular because it combines readability, hierarchy, and zero-noise syntax — ideal for config files, docs, and developer tools.

👉 Example TOON:

name = "John Doe"
age = 30

[address]
  street = "123 Main St"
  city = "London"

hobbies = ["reading", "cycling"]

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Why TOON matters

• More readable than JSON for humans
• Less strict than TOML, but keeps TOML’s clarity
• Great for config files, documentation, and developer tooling
• Easy to learn in minutes
• No nested braces → cleaner diffs, easier code review

Developers are adopting TOON because it feels like the natural middle ground between JSON and TOML.

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How to use the JSON ↔ TOON converter

1. Select conversion direction (JSON → TOON or TOON → JSON).
2. Paste your data into the left input.
3. Click Convert.
4. Get the transformed version instantly.

The tool automatically validates syntax and shows clear error messages.

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Practical use cases

• Configuration files for apps, games, scripts, or CLIs
• Dev tools that need readable settings files
• API payload demos using cleaner syntax
• Documentation that needs copy-friendly examples
• Migration from JSON to human-oriented formats

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Frequently Asked Questions (FAQ)

What makes TOON different from JSON?

JSON uses strict syntax (quotes, braces, commas). TOON uses sections and key–value pairs, making it easier to read and write manually.

Is TOON production-ready?

Yes — it’s designed for simplicity and readability, and is quickly gaining adoption in dev workflows.

Does conversion preserve data types?

Yes. Booleans, numbers, arrays, objects, and strings remain intact.

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Tips and curiosities

• TOON is inspired by TOML but intentionally simpler.
• Developers using JSON for configs often switch to TOON for clarity.
• TOON reduces visual noise and makes large configs easier to maintain.
• Both JSON and TOON represent the same structures — only the syntax changes.

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➡️ Convert JSON ↔ TOON instantly using the tool above!