A system and method for adult URL pre-screening. A URL request made by a child on a first computer is received by a gatekeeper. The gatekeeper compares the requested URL to URL entries in an approved URL table. If the requested URL is found in the approved URL table, permission is granted for enabling the child on the first computer to browse a Web page associated with the requested URL. If the requested URL is not found in the approved URL table, the gatekeeper accesses the Web page associated with the requested URL, generates a thumbnail of the Web page, and alerts a parent/guardian operating the second computer via an alert icon. The parent/guardian may view the thumbnail of the Web page by placing their mouse over the alert icon. The thumbnail includes a set of approval options from which to allow the parent/guardian to approve or deny access of the Web page for the child on the first computer to browse.