Modula

Modula is an outstanding WordPress gallery plugin that seriously prioritizes web performance! Additionally, it packs some beautiful image effects and styles. Below is a brief look at some of the noteworthy features this great plugin delivers:

Ability to design custom grids (one can freely resize images inside the gallery container)
Select from a range of 6 different light-box styles
Select from 12 built-in hover effects
Add image-entry animations (such as sliding and rotation)
Ability to further customize your gallery by using custom CSS
Quickly add social sharing icons to galleries to encourage visitors to share your images
Easily add videos to your galleries (even from external sources like YouTube and Vimeo)

One key reason I like and recommend Modula is that it offers on-the-fly image optimization (no need to optimize beforehand) and access to a super fast CDN to reduce your server load particularly if you have a large number of images. You can have peace of mind that your amazing photographs, awesome artwork and graphic design will pay off and get noticed as a result of a fast-loading website.