data tool
JSON to TypeScript
Create a starter TypeScript interface from sample JSON for quick prototyping.
Paste data here. It stays in your browser.
Copy-ready result appears here.
How it works
- Parses the JSON object.
- Maps values to basic TypeScript types.
- Generates a starter interface.
Common use cases
- Bootstrap API types.
- Document sample responses.
- Speed up frontend prototyping.
Code example
type User = { id: number; name: string; active: boolean }Starter types only
Generated interfaces are a starting point. Review optional fields, nullable values, arrays, nested objects, and API versioning before using them in production.
Schema-aware follow-up
For critical systems, pair generated types with runtime validation from a schema library or a backend contract.
FAQ
Is my input uploaded?
No. This MVP runs tool logic in your browser and does not send tool input to a server.
Can I use this on mobile?
Yes. Pages are mobile-first and designed for quick copy, paste, and share workflows.
Does the tool store history?
No. The MVP does not store tool input history or create user accounts.
Should I verify important output?
Yes. These tools are designed for productivity, but production changes and financial decisions should be independently verified.
Can the tool run after the page loads?
Yes. The interactive logic runs in the browser once the static page and JavaScript island are loaded.
What input format should I use?
Use the examples on the page as a starting point, then replace them with your own local input.