US Patent 11075977 Accurately determining web page visually complete time

In one embodiment, a monitoring process identifies a plurality of media elements added inside a viewport of a webpage, and calculates a render time of each of the plurality of media elements. After determining a load completion time of the webpage, the monitoring process may then determine a particular media element of the plurality of media elements that rendered last in the viewport before the load completion time based on the calculated render times. Accordingly, the monitoring process may then establish that a visually complete time (VCT) of the webpage is a corresponding render time of the particular media element that rendered last in the viewport.