Generate Zod validation schemas and TypeScript types.
Paste raw JSON or API payloads to generate battle-tested Zod schemas with nested models, inferred types, format detection, and instant file downloads.
import { z } from "zod"; export const PreferencesSchema = z.object({ theme: z.string(), notifications: z.boolean(), maxRetries: z.number().int(), }); export type Preferences = z.infer<typeof PreferencesSchema>; export const UserSchema2 = z.object({ id: z.string().uuid(), name: z.string(), email: z.string().email(), website: z.string().url(), age: z.number().int(), isActive: z.boolean(), createdAt: z.string().datetime(), roles: z.array(z.string()), preferences: PreferencesSchema, metadata: z.null(), }); export type UserSchema2 = z.infer<typeof UserSchema2>; export const UserSchema = UserSchema2; export type User = z.infer<typeof UserSchema>;
01 · Runtime & Compile-time Safety
From raw JSON to type-safe runtime validation.
Zod is TypeScript's premier runtime validation library. This tool instantly turns your sample API responses, configuration objects, and database fixtures into production-grade Zod schemas.
Every nested model is separated into an exported schema with clean naming, and corresponding TypeScript types are generated via z.infer<typeof ...> so your backend and frontend code share identical type contracts.
Click 'Download .ts' to immediately add the schema to your TypeScript codebase or 'Copy Schema' to paste it directly into your IDE.
02 · Features
Engineered for modern TypeScript workflows.
Download .ts file
Export ready-to-use TypeScript files with one click, containing both Zod schemas and inferred types.
Nested & array extraction
Deep object graphs and arrays are cleanly broken down into reusable, named sub-schemas.
Format detection
Automatically identifies ISO 8601 datetimes, UUIDs, emails, and URLs into specialized Zod string validators.
Strict validation option
Toggle strict mode to append .strict() to object definitions and guard against unknown fields.
03 · FAQ
Quick answers.
How does JSON to Zod work?+
The converter recursively parses your JSON payload, infers primitive types (strings, numbers, booleans, dates, UUIDs, emails), constructs reusable z.object schemas for nested structures, and exports inferred TypeScript types with z.infer.
Can I download the generated Zod schema?+
Yes! Click the 'Download .ts' button in the toolbar to immediately save a ready-to-import TypeScript file containing your Zod schemas and inferred types.
How are nested objects and arrays handled?+
Nested objects are extracted into their own named Zod schemas in PascalCase. Array items are merged and inspected to detect optional properties and union types accurately.
What is strict mode in Zod schemas?+
When strict mode is enabled, .strict() is appended to object schemas. This ensures runtime validation strips or rejects unexpected properties that were not in the schema.
Is my JSON uploaded to any server?+
Never. All parsing, schema generation, and file downloads are executed entirely client-side in your browser. No telemetry or server uploads exist.
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