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JSON to TypeScript

Generate TypeScript interfaces and Zod schemas from JSON. All processing happens in your browser.

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JSON to TypeScript

Generate TypeScript interfaces and Zod schemas from JSON. All processing happens in your browser.

JSON InputJSON
OutputTS
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How to Use JSON to TypeScript

  1. 1

    Paste your JSON

    Paste a JSON object or array into the input panel on the left.

  2. 2

    Choose output format

    Select TypeScript or Zod Schema tab. For TypeScript, choose between interface and type alias.

  3. 3

    Configure options

    Toggle optional properties, readonly modifier, and export prefix to match your coding style.

  4. 4

    Copy the types

    Click Copy to copy the generated TypeScript types or Zod schema to your clipboard.

Frequently Asked Questions

No. All type generation happens entirely in your browser. Your data never leaves your machine.

Yes. Nested objects are extracted into separate named interfaces or types, maintaining clean, readable output.

Arrays are typed based on their contents (including mixed types). Null values are typed as null. Empty arrays become unknown[].

Yes. Switch to the Zod Schema tab to generate Zod validation schemas with proper z.object(), z.array(), and z.string() calls.