Visual LightBox
Is it possible to resize thumbnails in web photo gallery template?
Q: I'm interested in your VisualLightBox. Can I resize the icon on the mobile friendly website to a size of my choosing or are these unchangeable?
A: You can select resolution you need from "Thumbnails resolution" list or select "Custom size" and set values you need for width and height parameters.
You should go to
Gallery->Properties->Thumbnails