JSON to Zod / TS
Convert JSON to Zod schemas and TypeScript interfaces instantly. Paste any JSON object and generate production-ready validation code. Free online, no install.
What is the JSON to Zod / TS?
Instantly generate TypeScript interfaces and Zod schemas from any JSON object. Built for optimal performance, this tool executes client-side directly in your browser without uploading your sensitive data to external servers.
How to use the JSON to Zod / TS
- Paste any valid JSON object or sample API response into the left-hand input editor.
- Configure schema generation preferences, such as inferred types, optional fields, and type exports.
- View the automatically synthesized Zod schema code and accompanying TypeScript inferred type.
- Copy the generated Zod validation schema directly into your Next.js, Express, or tRPC application.
Example: Generating Zod Schema for User Profile Response
{"id": "usr_99", "name": "Alex", "age": 29, "isAdmin": false}import { z } from 'zod';
export const userSchema = z.object({
id: z.string(),
name: z.string(),
age: z.number(),
isAdmin: z.boolean()
});
export type User = z.infer<typeof userSchema>;Instantly converts sample JSON payloads into type-safe runtime schemas with static TypeScript types.
Technical Guide & Privacy Assurance
For arrays with objects that may have missing properties across items, supply an array with diverse items so the generator can infer optional fields (z.string().optional()).
Frequently Asked Questions
What is Zod?+
Zod is a TypeScript-first schema validation library. It lets you define the shape of data and validate it at runtime.
Can I generate nested TypeScript interfaces from JSON?+
Yes — the tool recursively processes nested objects and arrays, generating deeply nested interface definitions.