JSON to TypeScript
Generate TypeScript interfaces from any JSON object instantly online, for free. Great for typing API responses — nothing leaves your browser.
TypeScript interfaces will appear here...
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Frequently asked questions
What is JSON to TypeScript?+
Generate TypeScript interfaces from any JSON object instantly.
How do I use JSON to TypeScript?+
Recursively infers types for nested objects and arrays. Produces clean interface definitions ready to paste into your code. Useful when consuming an API and you need types for the response. Runs entirely in the browser — your data never leaves your machine
Is JSON to TypeScript free?+
Yes, JSON to TypeScript is completely free. No account or sign-up required, and all processing happens in your browser — nothing is sent to a server.
Is my data safe when I use JSON to TypeScript?+
Yes. JSON to TypeScript runs entirely in your browser using JavaScript and Web APIs — your input is never uploaded, transmitted, or stored on any server.