JSON to TypeScript

The tool parses your JSON and recursively analyses the shape of every value — objects become interfaces, arrays are typed by their elements, and primitives map to string, number, or boolean.

Yes. Each nested object gets its own named interface derived from its parent key, keeping your types clean and reusable.

When enabled, every property is marked with a ? modifier (optional). This is useful when the JSON represents a partial response or when some fields may be absent in other payloads.

Absolutely — type any name in the "Root interface name" field and it will be used as the top-level interface name.

Yes. If the top-level JSON is an array, the tool generates an interface from the first element and exports both the interface and a typed array alias.