Align and resize icons
You can change the alignment, size, and labeling of icons on the desktop or in Finder windows. To change the icon you see for a file or folder, see Create custom icons for files or folders.
On the desktop
Control-click the desktop. Then do any of the following:
Quickly realign icons: Choose Clean Up.
If you don’t see Clean Up, it’s because you set your icons to be sorted automatically. To see the Clean Up options, choose Sort By, then choose None.
Align and sort icons once: Choose Clean Up By, then choose an option.
If you don’t see Clean Up By, it’s because you set your icons to be sorted automatically. To see the Clean Up options, choose Sort By, then choose None.
Have icons aligned and sorted automatically: Choose Sort By, then choose an option.
Change the icon size, grid spacing (space between icons), text size, and more: Choose Show View Options, then use the controls to make changes.
In a Finder window
Open a Finder window, then open the folder you want to change.
Choose View > Show View Options, then make your changes. For example, click the Arrange By pop-up menu, then choose Date Modified.
For more information, see Ways to view items in Finder windows.