A video thumbnail is a small image that represents a video and is displayed before the video is played. It serves as a preview or a visual summary of the video content. Thumbnails are commonly used in video sharing platforms, websites, and social media to provide a glimpse of the video's content and entice viewers to click and watch the full video.
In HTML, video thumbnails can be created using the tag. By specifying the source URL of the thumbnail image within the src attribute, the image can be displayed on the webpage. Additionally, CSS can be used to style and position the thumbnail image to enhance its visual appeal and attract viewers' attention.