Google began testing a feature in image search that allowed you to slide in or up an article from an image search result to learn more. They began testing it in March of 2019 and then announced it at Google I/O in May. Now Google has launched this feature.

Here is a GIF of it in action from Google:

"Swipe to Visit," as Google calls it, "uses AMP's prerender capability to show a preview of the page displayed at the bottom of the screen. When a user swipes up on the preview, the web page is displayed instantly and the publisher receives a pageview. The speed and ease of this experience makes it more likely for users to visit a publisher's site, while still allowing users to continue their browsing session," Google said.

Publishers who support AMP don’t need to take any additional action for their sites to appear in Swipe to Visit on Google Images. For those that don't, you can learn more how to over here.

Forum discussion at Twitter.