Change macOS Dock icon size

Apr 6, 2024

Set to an integer value (default is 64)

Dock icon size of 32 pixels.

defaults write com.apple.dock "tilesize" -int "32" && killall Dock

Dock icon size of 48 pixels.

defaults write com.apple.dock "tilesize" -int "48" && killall Dock

Read current value

defaults read com.apple.dock "tilesize"

Reset to default

defaults delete com.apple.dock "tilesize" && killall Dock