You can also apply these steps to change the default app that opens other file types, such as images or audio.

You can always open a specific PDF file within Adobe Reader, if you’d prefer. (3) To change your default settings so that all PDFs automatically open in Preview when you double-click on them, click on the “Change All” button and confirm your change. (2) In the Get Info dialog box that opens, use the dropdown menu of applications under Open With to select Preview. (1) Find the file in your Finder and right-click (or control-click) on it to access the contextual menu. If Preview isn’t already the default PDF viewer on your Mac (meaning that it’s the app that launches if you double-click on a PDF file), follow these steps to make it the default.

While many web sites direct you to download Adobe Reader to open PDFs, I recommend that you use Preview instead, as it’s faster and less clunky than Reader, and it has more user-friendly annotation tools.

Preview is a PDF and image viewer made by Apple that comes installed with the Mac OS.

2 Change the Default for Other File Types.

1 Change the Default PDF Reader to Preview.

Adobe acrobat for apple mac