A method, system, and computer program product for optimizing storage of Web storage attributes through analytics is provided. The method includes identifying and storing in memory of a computer, utilization of different Web storage attributes by different end users across different Web application sessions from different Web browsers and analyzing the stored utilization of different Web storage attributes to identify a past scope of utilization for each of the different Web storage attributes. The method further includes, responsive to receiving a request from a requestor for an optimal storage location of a particular Web storage attribute, determining an identified past scope of utilization for the particular Web storage attribute, mapping the determined identified past scope of utilization for the particular Web storage attribute to the optimal storage location, and returning an indication of the mapped optimal storage location of the particular Web storage attribute to the requestor.