When you scan it, all your app information will be synchronized, including the chats you have open and the most used emojis and stickers. Scanning the QR code with the mobile app is the fastest way to synchronize Telegram Desktop Portable with your account. When you run it, you will need to pair it through a device from which you have previously accessed Telegram Desktop Portable, or by using SMS verification. Upon decompressing the file, you come across the Telegram.exe executable.
With it, you can use Telegram on Windows without having to install it. Telegram Desktop Portable is the portable version of the popular instant messaging app.