Disclosed herein are embodiments of systems, methods, and products comprises a server, which receives a request from a client's electronic device to optimize one or more media elements in an optimization zone of a web page. The server may receive a slideshow or a video and determine a candidate media dataset based on images from the slideshow or video. Alternatively, the server may receive an article and determine the candidate media dataset by searching images related with key words in the article. The server may modify the markup code of the web page and publish the media element within the candidate media dataset in the optimization zone. The server may further query the click-through rate (CTR) associated with each published media element. Based on the CTR results, the server update the rendering rate of each media element to produce the maximum CTR.