JSON to Zod Schema
Generate Zod validation schemas from JSON data. Creates runtime-validated TypeScript types with automatic format detection.
// Zod schema will appear here...Frequently Asked Questions
Why use Zod schemas instead of TypeScript interfaces?
TypeScript interfaces only exist at compile time — they're erased when your code runs. Zod schemas validate data at runtime, catching invalid API responses, form inputs, and environment variables before they cause bugs. You get both runtime validation and TypeScript type inference from a single source of truth.
What string formats does the converter detect?
The converter automatically detects email addresses (z.string().email()), URLs (z.string().url()), UUIDs (z.string().uuid()), and ISO datetime strings (z.string().datetime()). Numbers are checked for integer vs float distinction to use z.number().int() where appropriate.
Does it generate the inferred TypeScript type too?
Yes. The converter generates both the Zod schema and a z.infer<> type alias, so you get runtime validation and compile-time types from the same definition.
How are nested objects handled in Zod?
Nested objects generate separate Zod object schemas that are composed together using z.object(). This keeps the code clean and allows you to reuse sub-schemas independently.
What version of Zod does the output target?
The generated schemas are compatible with Zod v3, the current stable version. They use standard Zod API methods and work with any project using Zod 3.x.
Can I use the generated schemas with tRPC or Next.js?
Absolutely. Zod schemas work perfectly with tRPC for API validation, Next.js Server Actions, React Hook Form via @hookform/resolvers, and any other library that accepts Zod schemas.