How to indicate that an image is a link too?

1. How do you indicate something is a hyperlink?
2. Can an image be a link?

How do you indicate something is a hyperlink?

The traditional cue for hyperlinks is blue text, like we're using here. And buttons, like their real-world counterparts, are rectangular, and have a 3-D appearance. These conventions provide the strongest perceived affordance of clickabilty and in early years we recommended that buttons and links follow these patterns.

Can an image be a link?

All the formats of images available on web pages support hyperlinks. You can embed your hyperlink for your JPG image, PNG image, JPEG image, SVG Image, and so on.