How to apply Quartz filters in macOS when saving images in Preview Use Quartz image filters in macOS's Preview app to apply special effects to images.
In the case of macOS, the Window Server further handles culling and obscuring images to ensure display images destined for specific windows stay only in those windows.
Apple's Core Graphics (Quartz) 2D imaging subsystem provides a high-performance, consistent API for creating, saving, and manipulating graphics.
The Quartz Compositor is responsible for image assembly and manipulation, combining images, and rotating, applying transforms, or shaping images.
Text can be drawn by Quartz using subpixel precision, and anti-aliasing (smoothing) even if a particular display can't show the text at full computed resolution.
