Super Box (PAID)
SuperBox is a different type of 'lightbox'. Instead of showing a popup that takes over the entire screen, it expands the lightbox in the middle of the thumbnail grid. SuperBox is a fully responsive image gallery, which only loads full size images on-demand as needed.
Download demo version (save disabled)
Super Box Extension
WYSIWYG Web Builder 14 or higher
Gallery Extensions Pack Discount
This extension is also part of the Gallery Extensions Pack which includes 14 gallery / slideshow extensions for only $29.95!