JSON to Zod Converter — Generate Type-Safe Schemas [2026]
Paste JSON → get a ready-to-use Zod TypeScript schema in seconds. Handles nested objects, arrays, and nullables. Perfect for Next.js and tRPC. 100% browser-based.
What is JSON to Zod?
How to Use JSON to Zod
Paste your JSON data into the input field on the left. The tool will automatically parse it and generate the corresponding Zod schema on the right. Copy the generated schema and use it in your TypeScript project for runtime validation. The tool handles nested objects, arrays, optional fields, and primitive types.
How JSON to Zod Works
Common Use Cases
- Quickly generating Zod schemas from API response samples
- Creating type-safe validation for form data in React apps
- Converting JSON fixtures to Zod schemas for testing
- Bootstrapping validation code for Next.js API routes
- Learning Zod syntax by seeing how JSON maps to schemas
Frequently Asked Questions
What is Zod and why should I use it?▼
Zod is a TypeScript-first schema validation library. It lets you define a schema once and get both TypeScript type inference and runtime validation. It is widely used in Next.js, tRPC, and React applications.
Does this tool handle nested JSON?▼
Yes. The converter recursively processes nested objects and arrays, generating properly nested Zod schemas with z.object() and z.array().
Can it handle null values?▼
Yes. Null values are converted to z.null(). If you need nullable types, you can manually change z.null() to z.string().nullable() or similar in the output.
Is my JSON data sent to a server?▼
No. All processing happens entirely in your browser. Your data never leaves your machine.