JSON Schema to Zod Schema Generator Online

Generate Zod schemas from JSON Schema

Zod is a TypeScript-first schema validation library used in APIs, forms, and configuration loaders. JSON Schema is a portable standard for describing JSON payloads. This tool converts JSON Schema documents into ready-to-use Zod schema code so your runtime validation matches your documented contract.

What this tool does

Paste a JSON Schema document in the input panel. The converter emits Zod schema definitions with your chosen root name, module format, and Zod version. Results update in real time as you edit the schema or change output options.

Why convert JSON Schema to Zod?

Teams often define APIs with JSON Schema or OpenAPI components, then validate payloads in Node.js or edge runtimes with Zod. Generating Zod code from schema files removes manual translation work and reduces drift between documentation and application code.

Common use cases

Bootstrap Zod validators from existing JSON Schema API contracts.
Prototype request validation before wiring a full codegen pipeline.
Convert configuration schemas into runtime Zod parsers.
Share validation logic between backend services and frontend forms.

Related tools

Generate TypeScript types from the same schema with the JSON Schema to TypeScript converter, map schemas to OpenAPI with the JSON Schema to OpenAPI Schema tool, or infer a schema from sample JSON using the JSON to JSON Schema Generator.

Frequently Asked Questions

Which JSON Schema versions are supported?

The converter supports Draft 4 and newer schemas, including common keywords like required, enum, items, properties, allOf, oneOf, and nullable type arrays.

What module format should I choose?

Use ES Module output for modern TypeScript and bundler projects. Choose CommonJS if your codebase uses require(). Select the no-import option when you already import z elsewhere and only need the schema definition.

Can I target Zod v4?

Yes. Use the Zod Version selector to emit code compatible with Zod v3 or v4 based on your project dependency.

Does the tool resolve external $ref files?

External file references are not resolved in the browser. Inline $ref pointers within the same document are supported. Resolve external refs locally before pasting the schema.

Is my schema data sent to a server?

No. Conversion runs entirely in your browser. Your JSON Schema content is not uploaded or stored on our servers.

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JSON Schema To Zod