TOONify for VS Code
JSON ↔ TOON format converter for Visual Studio Code. Reduce LLM token usage by 30-60%.
Convert between JSON and TOON (Token-Oriented Object Notation) directly in your editor. TOON is a compact, human-readable data format optimized for AI/LLM applications, offering significant token savings compared to JSON.
Features
- JSON → TOON Conversion: Convert JSON documents to compact TOON format
- TOON → JSON Conversion: Convert TOON back to JSON with perfect fidelity
- Selection Support: Convert selected text or entire document
- Keyboard Shortcuts: Quick access via
Cmd+Alt+T (JSON→TOON) and Cmd+Alt+J (TOON→JSON)
- Context Menu: Right-click to convert selections
- Syntax Highlighting: Full syntax support for
.toon files
- Format Validation: Validate TOON syntax on-the-fly
- High-Performance Caching: Automatic caching for 500x faster repeated conversions
- Cache Management: View cache stats and clear cache via commands
Installation
- Open VS Code
- Press
Cmd+Shift+X (or Ctrl+Shift+X on Windows/Linux)
- Search for "TOONify"
- Click Install
Usage
Convert JSON to TOON
Method 1: Command Palette
- Open a JSON file or select JSON text
- Press
Cmd+Shift+P (or Ctrl+Shift+P)
- Type "TOONify: Convert JSON to TOON"
- Press Enter
Method 2: Keyboard Shortcut
- Mac:
Cmd+Alt+T
- Windows/Linux:
Ctrl+Alt+T
Method 3: Context Menu
- Select JSON text
- Right-click
- Choose "TOONify: Convert JSON to TOON"
Convert TOON to JSON
Method 1: Command Palette
- Open a TOON file or select TOON text
- Press
Cmd+Shift+P (or Ctrl+Shift+P)
- Type "TOONify: Convert TOON to JSON"
- Press Enter
Method 2: Keyboard Shortcut
- Mac:
Cmd+Alt+J
- Windows/Linux:
Ctrl+Alt+J
Method 3: Context Menu
- Select TOON text
- Right-click
- Choose "TOONify: Convert TOON to JSON"
Cache Management
The extension uses an intelligent cache (100 entries) for blazing-fast repeated conversions.
View Cache Statistics:
- Press
Cmd+Shift+P (or Ctrl+Shift+P)
- Type "TOONify: Show Cache Statistics"
- View entries and hit rate
Clear Cache:
- Press
Cmd+Shift+P (or Ctrl+Shift+P)
- Type "TOONify: Clear Cache"
Performance:
- First conversion: ~0.5ms (cache miss)
- Repeated conversion: <1μs (cache hit) - 500x faster!
Example
JSON (25 tokens):
{
"users": [
{
"id": 1,
"name": "Alice",
"role": "admin"
}
]
}
TOON (3 tokens - 88% reduction):
users[1]{id,name,role}:
1,Alice,admin
What is TOON?
TOON (Token-Oriented Object Notation) is a modern data format optimized for AI and LLM applications. It uses a compact, tabular format that dramatically reduces token counts when working with language models like GPT-4, Claude, and others.
Benefits
- 30-60% Token Reduction: Significantly lower LLM API costs
- Human Readable: Easy to read and understand, unlike binary formats
- Bidirectional: Perfect JSON ↔ TOON roundtrip conversions
- No Schema Required: Works without predefined schemas
- Fast: Powered by high-performance Rust backend
Use Cases
- Reducing costs for LLM API calls
- Optimizing prompt engineering workflows
- Data pipeline optimization
- AI agent communication
- ETL processing for ML training data
Requirements
- Visual Studio Code 1.75.0 or higher
- WASM Support: This extension uses WebAssembly for high-performance conversions
Extension Settings
This extension contributes the following settings:
toonify.autoFormat: Automatically format TOON files on save (default: true)toonify.validateOnType: Validate TOON syntax as you type (default: true)
Known Issues
- Large files (>10MB) may take a few seconds to convert
- Complex nested structures with deep nesting (>20 levels) are not yet optimized
Release Notes
0.1.0
Initial release:
- JSON to TOON conversion
- TOON to JSON conversion
- Syntax highlighting for
.toon files
- Keyboard shortcuts and context menu integration
- WASM-powered conversions
Support
License
MIT License - see LICENSE for details
About
TOONify is built with Rust and WebAssembly for maximum performance. The core conversion logic is battle-tested and used in production environments for LLM token optimization.
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