Support for image.php?

I’d like the hover to appear on, for example, this page: https://crossedkeys.com/blog/2014/02/26/nicole-and-jay/wright0819/ I’m just the project manager here, but I’ve got developers at my disposal who could read code talk for me. ?? Thank you!

https://www.ads-software.com/plugins/pinterest-pin-it-button-for-images/