ToonkitCompact formats. Faster LLM workflows.

Convert, validate, and optimize your data with TOON — a human-friendly, token-efficient format designed for modern AI systems.

✓ Open-source✓ Client-side utilities✓ Lightweight & human-readable
product:
id: 001
name: Cake
ppu: 0.55
batters[2]{id,type}:
1001,Regular
1002,Chocolate
toppings[2]{id,type}:
5001,None
5002,Glazed

Why TOON?

A format designed from the ground up for AI interaction.

Fewer Tokens

Save 40–60% on token usage vs verbose formats.

LLM Friendly

Cleaner structure that models parse more reliably.

Table Support

Built-in, concise tabular notation for CSV-like data.

Readable

Minimal syntax that developers can read and write quickly.

Agent-Ready

Great for multi-step prompts and orchestration.

Zero Boilerplate

No trailing commas or unnecessary punctuation.

Less Syntax. More Signal.

See how TOON cuts through the noise of verbose formats.

product:
  id: 001
  type: donut
  name: Cake
  ppu: 0.55
  batters[2]{id,type}:
    1001,Regular
    1002,Chocolate
  toppings[2]{id,type}:
    5001,None
    5002,Glazed

68 tokens

Built for Speed and Clarity

The numbers speak for themselves.

Up to 60% Token Reduction

Significant savings on input costs and context window usage.

30-70% Parsing Accuracy Boost

Models understand TOON more reliably, reducing errors and hallucinations.

10x Cleaner for Tabular Data

The built-in table syntax is vastly more efficient and readable than arrays of objects.

Lower Inference Costs

Fewer tokens and faster parsing mean cheaper and quicker AI pipeline runs.

A Powerful Suite of Tools

Everything you need to work with TOON, right in your browser.

Format to TOON

Live conversion from JSON, XML, CSV, and Markdown to TOON.

AI Text to TOON

Use AI to convert unstructured text into structured TOON.

Playground

A split-view editor for live transformation between JSON and TOON.

AI Schema Generator

Generate a TOON schema from a text description.

Token Estimator

Estimate token count and cost savings compared to JSON.

Inspector & Validator

Perform basic syntax checks and find issues in your TOON text.

Pricing for Everyone

Free tools for all, and powerful AI features for pros.

MonthlyYearly(Save 45%)

Free

For hobbyists, students, and developers getting started.

₹0 / forever

  • All Core Converters
  • Inspector & Validator
  • Basic Playground
  • Snippet Library
Most Popular
Coming Soon

Pro

For professionals and teams who need the full power of AI.

***/year

  • All Free Features, plus:
  • Text-to-TOON (AI)
  • Prompt Compiler (AI)
  • AI Schema Generator
  • Early access to new AI tools

Open Source and Growing Fast

TOON is a community-driven format. Join us on GitHub to shape its future.

24,422

Stars

1,083

Forks

30

Contributors