Open a web browser on your laptop
Go to web.whatsapp.com
Open WhatsApp on your phone
Tap the menu on Android or Settings on iPhone
Select Linked devices
Tap Link a device
Scan the QR code shown on your laptop screen
Wait for WhatsApp to load on the laptop
Use WhatsApp Web in the browser
Or download and install WhatsApp Desktop from the official WhatsApp website
Open WhatsApp Desktop and scan the QR code with your phone