typewright

Paste JSON, get clean TypeScript types. Handles nesting, arrays, unions, and optional keys — deduplicating shared shapes into named interfaces. Inference runs entirely on your machine.

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TypeScript 

        

          

            
{ }

            
Types will appear here

            
Paste JSON on the left, or start from a sample structure.

            
          

        

        

          

            
! Invalid JSON

            

            

          

        

      

      
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Everything runs locally in your browser — your JSON never leaves this page.