Thumbnail

A custom image that you choose to use as the cover image for your video.

A small image (often generated automatically from a larger version of the image) that accompanies the contents of an index or search result. Thumbnails are very important for people to click on your content.

A small, low-resolution version of a large image file used for quick identification or editing.

Meanings of Thumbnail

1. Nail in the thumb.

2. Rough sketch (eg thumbnail size).

3. A small image used as a compact representation of a larger image.

4. Describe briefly.

5. To make a smaller view (large image).