JSON to Zod Schema Converter

Convert JSON to Zod validation schemas online. Generate type-safe Zod schemas from JSON data. Free, fast, and works in your browser.

Name:

JSON 入力

Zod Schema

About JSON to Zod Conversion

Zod is a TypeScript-first schema validation library that lets you define schemas and validate data at runtime. When building TypeScript applications, Zod schemas provide both runtime validation and compile-time type inference. This tool analyzes your JSON data and generates corresponding Zod schemas with proper type mappings: strings become z.string(), numbers become z.number(), booleans become z.boolean(), arrays become z.array(), and nested objects become z.object(). The generated schemas can be used directly in your TypeScript project for form validation, API response validation, and more. All processing happens locally in your browser.

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How to Use

Paste your JSON data into the input panel
Set the schema variable name
Click Convert to generate the Zod schema
Copy the schema into your TypeScript project

Common Use Cases

Generating Zod schemas from API response samples
Creating form validation schemas from JSON data
Building type-safe parsers for configuration files
Prototyping Zod schemas for new TypeScript projects

Frequently Asked Questions

What is Zod?

Zod is a TypeScript-first schema declaration and validation library. It lets you define the shape of data and validates it at runtime while providing automatic TypeScript type inference.

How does JSON to Zod conversion work?

The tool analyzes your JSON structure and maps each value to the appropriate Zod schema method: z.string(), z.number(), z.boolean(), z.array(), z.object(), and z.null().

Can I use the output directly in my project?

Yes. The generated code includes the Zod import statement and is ready to use. Just copy it into a .ts file where Zod is installed.

Does it handle nested objects?

Yes. Nested objects are converted to nested z.object() calls with all their properties properly typed.