Part of macOS
com.apple.WebKit.NetworkingWeb helper
◐ Close the app instead
Handles networking or graphics for web pages.
What it is
Shared by all the web pages one app has open.
If you stop it
Web pages in that app stop loading or redraw. Close the app instead.
The verdict
◐ Close the app instead. A part of an app. Closing it alone breaks something, so close its app.
In Activity Monitor
com.apple.WebKit.Networkingcom.apple.WebKit.GPU
From Procession’s guide, in the words the app shows.