: Go to Settings > Theme within WhatsApp Web to switch to Dark Mode and reduce eye strain.
: Launch your preferred web browser (Chrome, Safari, Edge, or Firefox) and go to whatsapp.com. Open WhatsApp on your phone : Android : Tap the three dots (Menu) in the top-right corner. iPhone : Go to Settings in the bottom-right corner. simple-way-to-use-whatsapp-web-pc
: Get alerts for new messages on your desktop so you never miss an update while working. : Go to Settings > Theme within WhatsApp