If, like me, you like to change your folder icons every now and then, you'll know that you need to Get Info on an icon file or an existing item (the source), click or tab to the icon in the Get Info window, then copy it and paste it onto the icon in the Get Info window of the item you want it on (the destination).Well, I just discovered that you can simply drag an icon file onto the icon in the Get Info window of the destination item, and it changes it for you. You can do this with any file -- it simply copies the icon from that file onto the destination. Very handy! I have noted that this takes a few attempts in some cases, but not sure why, so have bugged it with Apple.
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