What Is a JSON to TypeScript and Zod Generator?
This converter inspects a JSON sample and infers reusable TypeScript declarations or executable Zod schemas. It recognizes primitive values, nullable fields, arrays, nested objects, and mixed array values while keeping the generated model easy to edit.
How to Generate Types from JSON
- 1Paste a valid JSON object, array, or primitive value.
- 2Choose a root model name and select interfaces, type aliases, or Zod.
- 3Choose how null values should affect nullable or optional fields.
- 4Copy the generated code into your TypeScript project.
Common Use Cases
API Response Models
Turn representative API payloads into frontend and SDK types.
Runtime Validation
Generate a starting Zod schema for validating untrusted JSON.
Nested Data Refactoring
Extract readable declarations from deeply nested objects and arrays.
Frequently asked questions
Does the tool upload my JSON?
No. Parsing and code generation run entirely in your browser.
How are arrays inferred?
All sample elements are inspected and compatible object shapes are merged; mixed primitive values become union types.
Should generated schemas be reviewed?
Yes. A JSON sample cannot express every business rule, so add constraints such as formats, ranges, and required-field rules for production use.