The study investigated the contents, services and visibility of university library websites in Nigeria. It was found out that only 39 out of 129 libraries in Nigeria had functional library websites. Over 80% of the university libraries' websites contained basic information such as library introduction, library resources, and information about their social media.  82% and 90% of the university libraries provided internet access and OPAC services to users through their websites. In terms of visibility, library pages on the websites were found to be within three clicks on 56% of the library websites, with 100% visibility within thirty seconds. The study concludes that the hallmark of any library website is its ability to deliver real-time services online. The study recommends among others the re-designing of existing library websites to accommodate interactivity and capacity.