* Web-based: This is a very common term describing something that operates on the internet.
* Web-footed: This describes an animal with webbed feet.
* Web-slinging: This refers to the action of swinging from a web, often associated with Spider-Man.
* Web-spinning: This describes the process of making a web, as spiders do.
There are other, less common compound words with "web" that might exist in specialized fields or be more creative.
Let me know if you're looking for something specific!