JS2TS - your ultimate code conversion companion

JS2TS is a free, online AI-powered tool that converts JavaScript code to fully typed, production-ready TypeScript instantly—no login or account required. Designed for developers and teams wanting to migrate JS codebases to TS quickly, JS2TS adds type annotations, interfaces, generics, and more in seconds. It supports large files, React, Node.js, and common modern JS/TS constructs, all while ensuring your code is never stored or logged. Ideal for anyone transitioning to TypeScript, seeking improved code quality, error detection, and team scalability.