JSON to TypeScript Converter – Paste JSON, Get Interfaces I built a small tool to save time when working with APIs: JSON to TypeScript Converter . You paste JSON, and it gives you clean TypeScript interfaces—no setup, no install, no tracking. It handles nested objects, arrays, optional fields (based on null values), and basic type inference. You can tweak naming (PascalCase, camelCase), choose export types, and toggle whether to mark null fields as optional. It’s just a parser with a UI. No server-side processing—everything runs in your browser. Your data never leaves your machine. There’s a free tier that covers most use cases. If you use it regularly, there’s a $9/month Pro option that adds: Unlimited nested depth (free tier caps at 10 levels) Interface merging (avoids duplicate types) Optional property detection with smarter heuristics Export as multiple files (useful for larger payloads) Priority support I use it daily when integrating third-party APIs or prototyping.…