Sum Screen is a free Chrome add-on designed to simplify the process of summing numbers displayed on web pages. This tool allows users to easily highlight numbers and select them to add to a running total that appears on the screen. This functionality is particularly useful for tasks that require quick calculations or data analysis directly from browser content.

The program's user-friendly interface and straightforward operation make it accessible for anyone needing to perform quick arithmetic without the hassle of manual entry. By streamlining the number summation process, Sum Screen enhances productivity and efficiency for users who frequently work with numerical data online.