WhatsApp Web is the web-based version of WhatsApp Messenger and allows you to continue your conversations between any connected device without interruption. By default, the web-based platform will notify you any time a new message is received with a small ping. If you find these notifications to be irritating, the software offers an easy way to mute your desktop notifications.
Mute Notifications on WhatsApp Web
Connect to WhatsApp Web, and click the Menu button (3 vertical dots) followed by Notifications:
Uncheck the Desktop Alerts and Sounds checkbox:
If you'd like to specify how long to mute your notifications, you can click Turn off alerts and sounds for... to select between 1 hour, 1 day, and 1 week: