Activating Quick Look Using The Trackpad In OS X? Quick Look is very useful when wanting to preview documents and files without opening them in separate applications.

I know that you can trigger Quick Look by highlighting a file in Finder and pressing the spacebar.

Can it be activated using the trackpad on my Macbook Pro instead ?
Go to System Preferences > Trackpad > Point &amp; Click and enable the "Look up" checkbox. You will then be able to do a Quick Look with a three finger tap on the trackpad.

See:
How to Activate OS X’s Quick Look Using Your Mac’s Trackpad - August 30, 2013 11:46 AM