Adding an Image “Before vs. After” Slider to Your Website

A great way to compare before and after versions of an image is with a “before vs. after” slider.  Which such a slider you stack two images.  A slider bar sits on top and you use the mouse to sweep the slider left and right (or up and down).  On one side of the slider bar you see one version of your image.  On the other side you see the second version.  So as you sweep the slider back and forth you get a very dynamic feel for the differences in the images.  An example is shown below.  This shot is one I took at the Valley View pullout in Yosemite Valley.  It was taken during the first half of July, 2018.