Are nested objects and arrays supported?

Yes, nested objects become nested z.object() calls and arrays become z.array().

Can I customize the exported schema name?

Yes, set a custom schema name in the options bar.

How are null values handled?

Optionally mark fields that were null as .nullable() using the switch in the options bar.

Does it infer a TypeScript type too?

Yes, the generated code includes a z.infer<> type export alongside the schema.

Is my data uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your input never leaves your device and nothing is logged or stored on our servers.

JSON to Zod Schema Generator

Generate a Zod validation schema and TypeScript type from JSON.

Support

Works Offline

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No API

Schema name

Mark null fields as .nullable()

JSON input

Zod schema

import { z } from "zod";

export const Schema = z.object({
  id: z.number().int(),
  name: z.string(),
  active: z.boolean(),
  tags: z.array(z.string()),
  meta: z.object({
    city: z.string(),
    zip: z.null().nullable(),
  }),
});

export type SchemaType = z.infer<typeof Schema>;

About the JSON to Zod Schema Generator

Paste sample JSON data and instantly generate a matching Zod schema with nested objects and arrays, plus an inferred TypeScript type export — a fast starting point for runtime validation in TypeScript projects.

Examples

Simple object

{ "id": 1, "name": "Ada" }

Output

z.object({ id: z.number().int(), name: z.string() })

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

Version 1.0.0 · Updated 2026-08-11 · Runs entirely in your browser