Web.whatsapp.com
How to Add or Remove your WhatsApp Account from Portal?
On your Portal, tap or select Settings > Accounts > your name > Connect WhatsApp. You’ll see a code you’ll need to use to log in to Facebook.
Open facebook.com/device on your phone or computer browser. If you’re using your:
Phone: Tap ENTER CODE. Enter the code, then tap CONTINUE > Confirm.
Computer: Enter the code, then click Continue > Confirm.
On your Portal, check By checking, you agree to receive messages from Portal on WhatsApp.
Tap or select Continue > Next. Open WhatsApp on your phone.
Android: Tap More options > web.whatsapp.com > LINK A DEVICE. Follow the on-screen instructions if your device has biometric authentication.
iPhone: Go to WhatsApp Settings > tap WhatsApp Web/Desktop > Link a Device > OK. On iOS 14 and above, use Touch ID or Face ID to unlock.
Use your phone to scan the QR code on your Portal. On your Portal, tap or select Done.
Note: The authentication is handled by your device’s operating system using the biometrics stored there. WhatsApp can’t access the biometric information stored by your device's operating system.
How to Download and Use with QR Code using Web.whatsapp.com?
Visit web.whatsapp.com and under Download WhatsApp for Mac or Windows PC, click the green Download button. Note, that the website automatically detects whether you're using a Mac or a Windows PC, so you don't really have to look for a particular version for your system.
Once your file is downloaded, install it on your system and open it.
You'll now see the familiar QR code, just like the one you see when you open WhatsApp Web on a browser.
Scan the QR code from your phone by opening WhatsApp. If you have an Android smartphone, open WhatsApp > tap the vertical three-dots icon and select WhatsApp Web. Similarly, if you have an iPhone, open WhatsApp > tap Settings > followed by tapping WhatsApp Web.
Before scanning the code, make sure you check the Keep me signed in option right below the QR code. This is to be done so that you don't have to scan the code each and every time you open the app.
That's it. You now have WhatsApp running as an app on your computer.