Quick Look is one of the most handy features in Mac OS X to quickly get a preview of files, but you can also use it as an application launcher of sorts to quickly send a file to a compatible app. Similar to the “Open With” menu that can be summoned by right-clicking on a file within the Finder, but Quick Look gets the upper hand because it provides a preview of the file in question. Here’s how to use this feature:
Select any file in the Finder and hit Spacebar to see it in Quick Look
Right-click on the “Open with …” button to reveal all other app choices
This works with just about any file type, so long as the file type is recognized and there are applications installed that could read it. If you see apps in the list that shouldn’t be there given the file type, clearing the Open With menu will impact both Quick Look and the right-click option.
As usual quick Quicklook, you can also enter the slideshow from here if it’s a group of images that has been selected.
This handy little trick was found over at CultOfMac.