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Paste any JSON and instantly get TypeScript interface definitions. Struct analyzes the structure, infers types for every field, handles nested objects and arrays, and generates clean, production-ready TypeScript types.
Yes. Struct processes everything 100% in your browser. Your data never leaves your device — nothing is sent to any server. Most online tools send your data to their servers for processing. Struct is different: you can verify this by disconnecting your network and confirming the tool still works. Read our privacy policy for full details.
Paste your JSON into Struct and use the Convert feature to generate TypeScript interfaces. Struct analyzes the JSON structure and produces clean type definitions automatically.
Yes. Struct generates separate interfaces for nested objects and properly types arrays, including arrays of objects with their own interface definitions.
The generated TypeScript interfaces use clean naming based on your JSON keys. You can copy the output and customize names, add unions, or modify types in your editor.