You can view attachments but they will be available later only if you specifically download them. The web client of WhatsApp is temporary, so that nothing is stored on the PC. If you believe someone has access to your account via WhatsApp Web, above instruction forced to log out of all your active web sessions in WhatsApp on your mobile phone.
#HOW TO USE WHATSAPP ON PC AND PHONE AT THE SAME TIME CODE#
While you working with your computer or laptop on busy time, it's save the time to use your mobile. It's basically a mirror of the Whatsapp you can use instead of on your phone.
Whatsapp Web service is basically a feature of Whatsapp that allows you to use the application within your web browser.