Many websites use before and after image comparison tools, but how about doing it on WordPress? You must have seen image comparison tools in which you can slide towards right or left to see the before and after changes in the image, right? Well, if you want to showcase something similar on your wordpress driven website, you can use TwentyTwenty plugin by Zurb.
The plugin is very easy to use, it gives your a short code [twentytwenty] that you can use to show image comparisons in posts, pages, custom post types and widgets as well. To use it, you can use two different versions of the image to compare. It works with WordPress 3.5.1 or higher. Possible usage of this plugin can be on plastic surgeons websites, dentists, dermatologists and various other niches as well.