Meaning
A video thumbnail is a preview image used to represent a video before or alongside playback.
A practical example
A clear close-up and a short, accurate label may communicate an engineering question better than a crowded collage.
What to check
A click is not the only outcome. Make sure the image represents the content rather than promising a dramatic event the video does not establish.
For a related planning or text task, open the free workflow tool. The tool has its own limits; its result is not a measurement or approval of every concept described here.
Continue with the video glossary or a workflow guide.