The presentation of content on the YouTube platform, specifically the arrangement of video thumbnails in a horizontal line, is a key element of user interface design. A limitation to three items displayed in this manner affects the visual density of the page and the user’s immediate browsing experience. This layout choice can be observed on certain device types or screen sizes, especially within the mobile application environment or when viewing the site on smaller desktop browser windows.
The reduction in the number of video thumbnails per line can influence viewing habits. It may lead to increased scrolling, potentially exposing the user to a greater variety of content. The strategic reduction of items horizontally presented could be a conscious design decision to improve readability, minimize visual clutter, or cater to touch-based navigation, prioritizing user-friendliness on devices with smaller screens. This design also reflects changes in responsive website design over the years to accommodate varying user agent and device configurations.