1) Image Size: Select any predefined image size for your product image from here. You can also set a custom size for your product image. 

2) Lazy Load: Select Off or On Demand as you prefer for the lazy load option. 

3) Preloader: Enable/Disable the preloader option from here.

4) Preload Style: Select any of the preload styles from four different styles available in the dropdown. 

• Normal 
• Fade
• Gray 
• Blur 

5) Border Radius: Set a border radius for your product gallery image from here if you like. 

6) Image Mode: Select any of the image modes you prefer from the dropdown here. There are five different modes available:

• Original
• Grayscale
• Grayscale on hover