JSON to Zod Schema Generator

What Is a JSON to Zod Converter?

This tool takes a JSON sample and generates a Zod schema that validates that shape. Zod is the most popular TypeScript-first validation library — schemas double as runtime validators and static type sources. Instead of writing schema definitions by hand, paste a real API response or config object and get a ready-to-use schema in seconds.

How to Use This Tool

Paste valid JSON into the input area (or click Load Sample).
Optionally set a schema name — it becomes the exported const name.
The Zod schema and TypeScript type are generated instantly.
Click Copy to copy the output to your clipboard.

Key Features

Supports nested objects and arrays
Distinguishes integers (z.number().int()) from floats (z.number())
Handles null values with z.null()
Generates z.infer TypeScript type automatically
Quoted key support for non-identifier field names

FAQ

Does the generated schema handle optional fields?

The schema treats all fields as required, matching the sample exactly. To make a field optional, append .optional() to its schema after generating — e.g. z.string().optional().

What if my array has mixed types?

The generator infers the schema from the first element. For mixed arrays, manually change it to z.array(z.union([...])) after copying.

How do I install Zod?

Run npm install zod. Zod requires TypeScript 4.5+ and strict: true in your tsconfig.