net surfer
US /ˈnet ˌsɜːr.fər/
UK /ˈnet ˌsɜːr.fər/

1.
a person who spends a lot of time browsing the internet
:
•
As a dedicated net surfer, she always knows the latest online trends.
•
He became a net surfer during his recovery from an injury.
a person who spends a lot of time browsing the internet