JSON in.
TOON out.
Convert JSON ↔ TOON in your browser.
See how your actual data compares before changing a production workflow.
Counts are rough character-based estimates, using compact JSON as the baseline. Verify tokens and output quality with your model. Your data stays in this tab.
Paste TOON on the left to validate
Paste JSON on the left to compare token usage
Where TOON can help
Tabular data can become more compact. Deeply nested data, latency, caching, and task accuracy may favor another representation.
[
{
"id": 1,
"name": "Ada Lovelace",
"role": "admin",
"active": true
},
{
"id": 2,
"name": "Alan Turing",
"role": "user",
"active": false
},
{
"id": 3,
"name": "Grace Hopper",
"role": "user",
"active": true
}
][3]{id,name,role,active}:
1,Ada Lovelace,admin,true
2,Alan Turing,user,false
3,Grace Hopper,user,trueTabular arrays
Uniform object arrays become CSV rows. Keys declared once, not repeated per row.
Indentation = nesting
No braces, brackets, or commas for objects. Whitespace does the structural work.
Minimal quoting
Strings only quoted when necessary. No quotes around plain words, numbers, booleans.
Lossless round-trip
The tool uses the official library and rejects unsafe integers. Quote long identifiers as strings. Ordinary decimal numbers use JavaScript numeric precision; test your actual data before changing a production workflow.
Use the library. Keep the control.
Use the free library in your own environment, or discuss a scoped integration with RankStack.
Free
- JSON → TOON converter
- TOON → JSON decoder
- Syntax validator
- Token comparison tool
- Runs entirely in your browser
- No signup required
Custom integration
A scoped implementation in your own workflow. Price and delivery are agreed after a sample review.
- Define your input and required output
- Agree validation and acceptance examples
- Review a working sample before commissioning
- Receive source, tests and run instructions
Need only conversion? Use the free official library.