The default folder icons are not helpful to me. I'd prefer to see a preview image of the contents or first image.
I dont want to manually do this for every folder either, just set a global default. How can this be done?
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This cannot be done automatically across the computer, but there is a way to do this quickly to a group of directories:
Using inspector will be best because you can select multiple files to change the icons of at once.
Also, as stated in this link, Apple will display file previews for some items by default.
Dynamic Previews Documentation: https://support.apple.com/en-us/HT201067
How to change file icons, as described above: https://support.apple.com/kb/PH13922?locale=en_US