You are able to choose between different kind of grids and lightboxes. For better illustration, have a look at the demo on https://iconic.instacks.com.

Grids

Justified: All image thumbnails are aligned by rows. The maximum image height (in pixel) will define the row height in a flexible way. The gutter (in pixel) will define the margin between the images.

Masonry: All image thumbnails are aligned by columns. The maximum image height is not taken into account. The gutter (in pixel) will define the margin between the images.

Flexbox: All image thumbnails are aligned by columns. The maximum image height (in pixel) will define the row height in a fixed way. The gutter (in pixel) will define the margin between the images.

Flexbox Square: All image thumbnails are aligned by columns. All image thumbnails are displayed in squares. The maximum image height (in pixel) will define the row height and width in a fixed way. The gutter (in pixel) will define the margin between the images.

Single: The first image thumbnail will be displayed only. The maximum image height (in pixel) will define the thumbnail image height in a fixed way.

Single Square: The first image thumbnail will be displayed only. The image thumbnail will be displayed in square. The maximum image height (in pixel) will define the thumbnail image height and width in a fixed way.

Bootstrap Carousel: All images will be displayed in a carousel. The maximum image height (in pixel) will define the carousel height in a fixed way. This option is only working for Bootstrap based themes.

Foundation Orbit: All images will be displayed in a carousel. The maximum image height (in pixel) will define the carousel height in a fixed way. This option is only working for Foundation based themes.

Splider Integration: Integrate Iconic Gallery with Splider 2 from SHAKING THE HABITUAL.

All thumbnail grids and the carousel have the option to display captions.

Lightboxes

You're able to choose between the lightboxes Photo Swipe and Baguette Box. Both provide either a dark or light background.

All lightboxes have the option to display captions.