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JSON to Types

100% client-side. Your data never leaves this page. Verify: DevTools → Network.

JSON
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This uses quicktype compiled to run in your browser:
      it infers a schema from the JSON you paste and emits TypeScript interfaces, Zod
      schemas, Python dataclasses, or Go structs. The generator is a ~1.5 MB bundle, so
      it's fetched lazily on your first generate and then cached. Nothing you paste is
      ever uploaded. The work happens entirely in this tab.