The xnapper app for Mac streamlines screenshot taking with customizable shortcuts and backgrounds, including gradients or images. It simplifies capturing windows with a Space bar press and enhances screenshots with editing tools like arrows, shapes, text, and blur effects. Features include a screenshot history, compatibility with files and clipboard images, and tailored options for social media dimensions. It offers preset and customizable settings, image compression, and quick text recognition, making it an efficient tool for enhancing and managing screenshots on Mac.