Wiktionary
web content
n. (context computing English) a web page as delivered to the client, including text, images, hyperlinks, audio and video content; may be generated statically or dynamically
Wikipedia
Web content
Web content is the textual, visual, or aural content that is encountered as part of the user experience on websites. It may include—among other things—text, images, sounds, videos, and animations.
In Information Architecture for the World Wide Web, Lou Rosenfeld and Peter Morville write, "We define content broadly as 'the stuff in your Web site.' This may include documents, data, applications, e-services, images, audio and video files, personal Web pages, archived e-mail messages, and more. And we include future stuff as well as present stuff."