How to match a thumbnail to an area in the original image?

1. What is a thumbnail URL?
2. Why is a thumbnail called a thumbnail?
3. What is a thumbnail image?
4. In which of the following views the images are displayed as thumbnails?

What is a thumbnail URL?

The local file URL of the thumbnail image for the item.

Why is a thumbnail called a thumbnail?

Origin of the term thumbnail

It's a reference to the human thumbnail and is used to describe the small size of an image, as in it's so small it's the size of a thumbnail. This term was used in this way to refer to images back in the 17th century.

What is a thumbnail image?

A thumbnail is a small image representation of a larger image, usually intended to make it easier and faster to look at or manage a group of larger images. Graphic designers and photographers typically use this term.

In which of the following views the images are displayed as thumbnails?

Slide Sorter view gives you a view of your slides in thumbnail form.