Font Smoothing is a feature in MacOS that blends the edges of display fonts with the background using anti-aliasing to make text more legible.In modern MacOS versions like macOS Sequoia, macOS Sonoma, and others, there is no built-in preference to adjust font smoothing.To adjust font smoothing in macOS, users can use the free app called 'Font Smoothing Adjuster' with simple options to enable or disable the feature.Users need to restart their Mac after changing font smoothing settings to see the effect on screen text rendering.