JSON → Zod & TypeBox
Convert any JSON to Zod or TypeBox schemas with smart type inference. Detects emails, UUIDs, dates, nested objects, arrays, optional fields & unions automatically.
Free JSON to Zod & TypeBox Schema Generator
Toolify's JSON to Zod & TypeBox converter is the most advanced schema generator available. Paste any JSON object and get a Zod or TypeBox schema with intelligent type inference — automatically detecting email addresses, UUIDs, datetime strings, nullable fields, nested objects, and arrays.
Toggle between Zod and TypeBox output with one click. The generated schema is ready to paste into your TypeScript project with zero modifications.
Frequently Asked Questions
What is Zod and why should I use it?
Zod is a TypeScript-first schema validation library. It lets you define data schemas that work for both static TypeScript types and runtime validation. It's popular in Next.js, tRPC, and React Hook Form projects.
How does smart type inference work?
The tool analyzes your JSON values to detect specific formats beyond the basic JSON types. For example, it recognizes 'user@example.com' as an email, '2024-01-15' as a date, and UUIDs — generating the appropriate Zod validators like z.string().email().
When should I use Zod vs TypeBox?
Use Zod for most TypeScript projects — it has excellent DX and ecosystem support. Use TypeBox when building APIs with Fastify or Elysia, or when you need JSON Schema compatibility.
Does it support optional fields?
Yes. JSON fields with null values are inferred as optional (z.optional() in Zod, Type.Optional() in TypeBox).
Can I switch between Zod and TypeBox output?
Yes. Toggle between Zod and TypeBox output with a single click after generating the schema.