This document discusses 5 ways to add a before and after photo gallery to a website using plugins like Jetpack or NextGen Gallery. Adding such a gallery is beneficial as it allows businesses to showcase their work and gain customer trust. The options discussed are the Jetpack Gallery, Jetpack Slideshow, using the Simple Add feature, NextGen Gallery, and presenting images together without a plugin. The document recommends choosing an option and optimizing image quality for best results.