Web Tools
JSON to Zod Schema
Convert JSON data to Zod validation schemas. Infer nested objects, arrays, z.number().int(), z.null(), and type inference. Runs entirely in your browser — your data never leaves your machine.
json zod converter schema validation typescript
Published May 29, 2026
All interactive tools run entirely in your browser. Your data never leaves your device.
How It Works
Paste any JSON data and instantly get Zod validation schema code. The tool infers types from values, handles nested objects, arrays, null values, and generates ready-to-use Zod schemas with import statements and type inference. Configure the root schema name and optional field descriptions.
Features
- Schema generation:
const rootSchema = z.object({ ... })with proper Zod syntax - Import included: auto-generates
import { z } from "zod"at the top - Type inference: adds
type Root = z.infer<typeof rootSchema>for TypeScript - camelCase fields: Zod-idiomatic field naming from
snake_caseandkebab-casekeys - Precise types:
z.string(),z.number().int(),z.number(),z.boolean(),z.null() - Nested schemas: objects within objects generate separate named schema constants
- Array schemas:
z.array(z.string()),z.array(nestedSchema), etc. - Descriptions: optional
.describe()chains for field documentation - 5 example payloads: simple, nested, array, API response, form validation
- Private: runs entirely in the browser — no data transmitted
Use Cases
- Quickly generating Zod schemas for API response validation
- Bootstrapping form validation schemas from JSON fixtures
- Creating runtime type-safe parsers for external data
- Learning how JSON structures map to Zod validation code
- Generating TypeScript-first validation for Astro, Next.js, or tRPC projects