- 1). Click on a PDF file in a folder on your Mac to select it.
- 2). Click "File" from the Finder menu. Click "Get Info." The info panel for the PDF file appears.
- 3). Click on the pull-down menu next to "Open With" and then click "Preview" from the list.
- 4). Click the "Change All" button. All PDF files are now set to open with Preview.
- 5). Click the red circle at the top of the info panel to close it.
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