I used the answers - how to start slideshow in Mac, but it does not work. I have iMac and may be somebody can help me. I open my pictures in the finder and then use one to start the slide show using the View and then Slideshow. Nothing work

  • Can you add a link to the instructions you've followed? Also, in which application do the pictures open? What exactly does happen if you select View->Slideshow?
    – nohillside
    Commented Mar 25, 2018 at 7:40

2 Answers 2


To be clearer - if you actually open all the relevant images in the Preview app, the slideshow option inside the Preview app will work.

If instead you highlight the files in Mac OS Finder, and then click Option+Spacebar, you will Quick Look these inside Finder, which will include a slideshow option as well - this is the far faster approach in most cases.

Here are two screengrabs of the Quick Look function in Finder: one showing per-image-view, the other a grid view.

Notice that in both cases I have all the files highlighted in Mac OS Finder, and then click the Quick View keyboard shortcut:

enter image description here enter image description here

As you can see in the screengrab, if I want to, I then have the option to open any one of these images in the Preview app, should I want to adjust colour curves, print, annotate or other such tasks.

  • Both methods work, but both have their problems. Using quicklook, the images are not zoomed to full screen if they're small. Using Finder, they're zoomed, but look terribly pixelated. On the other hand, if you've set up your screensaver to run a slide show, the images look great. I wish there was a way to run a slide show that looks as good as the screensaver. Commented Mar 9, 2020 at 23:36

You can use Option+Spacebar to open a Quick Look slideshow.

Alternatively you can open the image in Preview and use the slideshow function from there.

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