This plugin is terrific!! It was pretty much exactly what I was looking for! I had some tweaks I wanted for my captions so I contacted Beyondspace and they gave me the extra code I needed, which was to zoom in on my images with no text anywhere. My site performs great on both desktop and mobile now. Top notch service and super friendly! If you are an artist or photographer, I highly recommend Lightbox Gallery for Squarespace for your site. You can see it in action here: timconlon.com