JSON to TypeScript Interfaces
Paste any JSON and instantly generate clean TypeScript interfaces. Handles nested objects, arrays, null values, and optional
Your files never leave your device. Processed locally. 100% private.
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How To Use JSON to TypeScript Interfaces
Complete your task perfectly in just three straightforward steps.
Paste JSON
Paste your JSON response or object into the input panel.
Configure Options
Toggle export keyword, optional fields, semicolons, and naming style.
Copy TypeScript
Copy the generated interfaces to your clipboard.
FAQ
Everything you need to know about the JSON to TypeScript Interfaces.
Is my JSON uploaded?
No. The generator runs entirely in your browser.
Does it handle nested objects?
Yes — creates a named interface for each nested object at any depth.
How are arrays handled?
Arrays generate typed entries like string[] or User[] interface arrays.
What happens with null values?
Null fields are typed as null or an optional union depending on your settings.
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