JSON to Zod Schema Generator
Paste any JSON object or array and get a ready-to-use Zod schema (`z.object`, `z.string`, `z.number`, `z.array`, …) with nested objects inlined. Use it to validate API responses or form data in TypeScript. Everything runs locally in your browser — your JSON is never uploaded.
How to use
- Paste or type your JSON into the input box.
- Optionally rename the exported schema constant (defaults to schema).
- Copy the generated Zod schema from the output box.
Frequently asked questions
- How are types inferred?
- Strings map to z.string(), numbers to z.number(), booleans to z.boolean(), objects to z.object(), and arrays to z.array() of the first element's type.
- What happens with null or empty arrays?
- null maps to z.null() and an empty array to z.array(z.unknown()), since the element type can't be inferred from an empty sample.
- Does it support nested objects?
- Yes. Nested objects are inlined as nested z.object(...) calls, so the whole schema is a single expression you can assign to one constant.
- Is my JSON sent anywhere?
- No. Conversion happens entirely in your browser; nothing is uploaded.
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