its possible create a page with all images on gallery example :
Category (XX) : Category:(XXX)
image_name(link to image) image_name(link to image)
image_name(link to image) image_name(link to image)
image_name(link to image) image_name(link to image)
Category (XXXX) : Category:(XXXXX)
image_name(link to image) image_name(link to image)
image_name(link to image) image_name(link to image)
image_name(link to image) image_name(link to image)
etc...
page with all categories and images...