JSON Schema to TypeScript Interface Generator

Turn a JSON Schema into TypeScript

A JSON Schema and a TypeScript interface describe the same data in different worlds, one for runtime validation, one for compile-time types. This tool generates a TypeScript interface from a JSON Schema, so a schema you already have becomes usable types in your code.

Why the conversion is useful

Many projects define their data with JSON Schema, for validation or as an API contract, and then need matching TypeScript types so the code that handles the data is type-safe. Writing those types by hand duplicates the schema and risks them drifting apart. Generating the interface from the schema keeps them aligned, so the types reflect the actual contract. This is a simplified conversion that covers the common schema constructs; unusual or advanced schema features may need manual adjustment.

Keep types and schema aligned

It runs entirely in your browser, so nothing you paste is uploaded and the result is yours to copy straight into a project. Because it works client-side, you can use it on private code and data without anything leaving your machine.

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