Toggle image (like before and after) on click

Hi there!
I work as a retoucher and I’ve made my site in WP (https://www.studiomint.se – based on the theme Viewfinder). Since I’m a retoucher, almost all of my images has a “before”-picture and I would like to implement a function that lets the viewer click on a image to toggle the before (and after) image. I know this is possible using jQuerys toggle function and I’ve search for WP-plugins that uses it but have not found anything.

Preferably I would like to have it so that when I upload a new image to my site, there should be an option to upload a secondary image as well. If there’s a secondary image, when the user clicks on it, it will toggle between the both of them, and if there isn’t any secondary – the toggle function is “turned off” for that image.

Is this even possible and how can I find information that can help me fix this? Do you know about any plugins thats in this topic?

Please help me!

Kind regards,
Karl