JSON to Types Converter — TypeScript, Python, Go & Zod

Generate clean, production-ready types and validation schemas from raw JSON objects in real time.

Runs in your browser. Your files never leave your device. See how to check

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How to do it

  1. 1
    Choose your settings

    Fill in the details or pick the options you need.

  2. 2
    See the result

    The preview updates right away as you change things.

  3. 3
    Download or save it

    Save the result to your device. Nothing is sent to or stored on a server.

About this tool

Transform arbitrary JSON into type-safe code for modern backends and frontends. Generates nested TypeScript interfaces, Python Pydantic BaseModel classes, Go structs with json tags, and Zod validation schemas with one click.

Tips for best results

Take a moment to read the options before you start, and try the tool with a small sample first. Everything runs in your browser on your own device, so nothing you type or add is uploaded, and closing the tab clears it. If something does not look right, reload the page and try again, or use the report link on this page to tell us what went wrong so we can fix it. If a result still looks wrong, change one value at a time to see which box matters most. Bookmark this page if you will need the tool again.

Quick facts

Frequently asked questions

Does it handle nested JSON objects and arrays?

Yes, it recursively inspects nested objects and arrays of objects, generating clean sub-interfaces and models.

Which programming languages and libraries are supported?

TypeScript (interfaces & types), Python (Pydantic & dataclasses), Go (structs), and TypeScript Zod schemas.

Can I customize the root model name?

Yes, simply type your preferred root class name and the output models will update instantly.

Is my API data or JSON payload secure?

Absolutely. Code generation is performed 100% client-side in JavaScript without sending your JSON to any server.

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Completely freeNo cost, no sign-up
Files stay privateEverything runs in your browser
Easy in your languageAvailable in many languages