A YouTube thumbnail is a small image that represents a YouTube video. It is displayed on the YouTube platform in various locations, such as in search results, video recommendations, and the video player itself. The purpose of a YouTube thumbnail is to attract viewers to click on the video and watch it.
YouTube thumbnails are typically 1280 pixels wide by 720 pixels tall and can be in the form of a static image or a series of images that make up an animated GIF. The thumbnail should be visually appealing and representative of the video content to entice viewers to click on the video.
YouTube creators have the ability to choose their own thumbnail for their videos, either by selecting one of three automatically generated options or by uploading a custom image. It is important for creators to choose a high-quality and attention-grabbing thumbnail to increase the chances of their video being viewed by a wider audience.