TypeScript to JSON Schema

Paste your TypeScript into the box above and the JSON Schema appears instantly below — nothing to press, nothing to upload. It runs entirely in your browser, so you can copy the generated code or download it as a file. If the input has a syntax error, a clear message tells you what to fix.

Yes. It is completely free with no signup or limits, and it is private because the whole conversion runs locally in your browser — your data and code are never sent to a server. That makes it safe for proprietary schemas and payloads, and it works offline once the page has loaded.

You get JSON Schema generated from your TypeScript: JSON Schema describes the structure and types of your JSON so it can be validated automatically. It saves you writing the boilerplate by hand and keeps the generated types in sync with your real data.

It is a best-effort generator that handles the common, well-formed cases well, but complex or unusual type syntax may need a manual tweak. Always review the output before shipping.

There is no fixed limit because nothing is uploaded — the only constraint is your device's memory, so even large inputs convert quickly. The generator engine loads on first use and is cached afterwards, so repeat runs are instant.

Yes. It runs in any modern browser on Windows, Mac, Linux, iPhone and Android with nothing to install, and works offline once loaded. Copy or download the generated code on any device.