Quick Convert

Paste your JavaScript code and get TypeScript output instantly.

JavaScript Input
TypeScript Output
Desktop App

Need to convert entire projects?

Our free desktop app converts hundreds of files at once. Drag and drop folders, preview changes, and export everything in seconds — all offline.

  • Batch convert entire folders and ZIP archives
  • File tree with checkboxes — select exactly what to convert
  • Per-file progress tracking and diagnostics
  • 100% offline — your code never leaves your machine
Download for Windows Free · Windows 10+