Interaction to Next Paint

After enough of the webpage has been loaded and painted, visitors can begin interacting with the page. These interactions change something about the webpage, such as displaying a new image or playing a video. The browser must do additional work to process these changes. Some of the work can be quite extensive and take considerable time to complete. For some types of changes, the browser also needs to request additional files from the server and the server will require additional time to process those requested files. The more work the browser or the server must do in response to visitor interactions, the longer it will take for visitors to see changes in response to their interactions. This creates a poorer experience for visitors and may deter visitors from interacting further.