You can use FontAgent 8 to clear macOS system font caches immediately or set a schedule to clear font caches every time you log out, restart, or shutdown your computer.
- Open FontAgent.
- From the menu bar, select FontAgent > Preferences.
- Select the Caches tab item.
- Make a selection from one of the radio buttons to choose if you want to clear the font caches for all users on the machine, or for just the currently logged in user.
If you want FontAgent to clear the font caches immediately, select the Clear Caches Now button, otherwise FontAgent will clear the font caches the next time you log out, restart, or shutdown your computer.