Font Smoothing Adjuster

Font Smoothing Adjuster is a tiny, native macOS app that lets you adjust your font smoothing preferences in a graphical user interface. Issues and pull requests welcome!

What is font smoothing?

Font smoothing is something that macOS does to make your fonts look slightly bolder. This has the side-effect of messing with carefully designed character shapes produced by font creators, and makes text more blurry. See the font smoothing section of Nikita Prokopov’s excellent article for more details.

Why did you make this app?

On previous releases of macOS, you could disable font smoothing from the General pane of the System Preferences app, but this option has been removed from macOS Big Sur. This annoyed us, so we made a tiny app that lets you easily choose what level of font smoothing you would like, or disable it altogether.

Can't I just use terminal commands to adjust font smoothing?

Absolutely. If you’re comfortable using a terminal, you can also use the following commands to set your desired level of font smoothing instead of using the app. You will need to log off or restart your Mac for the changes to take effect.

Disable font smoothing:

defaults -currentHost write -g AppleFontSmoothing -int 0

Light font smoothing:

defaults -currentHost write -g AppleFontSmoothing -int 1

Medium font smoothing (default):

defaults -currentHost write -g AppleFontSmoothing -int 2

Heavy font smoothing:

defaults -currentHost write -g AppleFontSmoothing -int 3

Reset to default font smoothing level (medium):

defaults -currentHost delete -g AppleFontSmoothing