JSON to TypeScript Generator
JSON to TypeScript Interface Generator
Convert sample JSON into TypeScript interfaces for faster API typing and frontend scaffolding.
JSON to TypeScript Generator workspace
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Turn sample JSON API responses into TypeScript interfaces to bootstrap typings for frontend and backend projects.
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How it works
- 1Paste a representative JSON payload and the generator infers nested object and array types.
- 2A root interface name keeps output ready for direct use inside a TypeScript codebase.
- 3Use the result as a starting point, then refine optional fields and exact literal unions as needed.
Examples
Generate types from a user payload
{"id":"usr_1","name":"Ava","roles":["admin"],"profile":{"timezone":"UTC"}}
When to use this tool
- Generate interfaces from example API payloads.
- Scaffold nested types for documentation and mocks.
- Iterate quickly before refining optional fields manually.
Frequently asked questions
Are generated types production-ready?
They are a strong starting point. Review optional fields, unions, and naming before committing to your codebase.
Does it handle nested objects and arrays?
Yes. The generator infers nested structures and creates separate interfaces where needed.
Is my JSON uploaded?
No. Type generation runs entirely in your browser.