You have a folder of photos - maybe from a trip, an event, or an external drive - and you just want to play them as a full-screen slideshow on your Mac. You don’t want to import anything into Photos app first. Good news: you don’t have to. Here’s every way to play a slideshow straight from a folder on Mac, from the built-in tricks to a dedicated app that does it properly.
Can macOS Play a Slideshow Directly from a Folder?
Yes, but only in a limited way. macOS has two built-in routes for a folder slideshow, and both come with real restrictions:
Finder Quick Look - select all the photos in a folder, press the Space bar, then click the play button (or the arrow icons) in the Quick Look window. It’s the fastest way to preview a folder, but it’s manual: you have to reselect the files every time, there’s no auto-advance timing you control, and there’s no real shuffle - just the order Finder happens to sort them in.
Preview app slideshow - open a photo in Preview, select all the images in the sidebar, and press ⌘ + Shift + F (or go to View → Slideshow). This gives you a proper full-screen slideshow with basic forward/back controls. It’s a step up from Quick Look, but it still has no shuffle mode, no adjustable timing beyond the default, and no way to add music or handle video clips mixed in with your photos.
Both options work fine for a quick look at a handful of images. For anything more - a party, a long folder, an external drive, or a slideshow you want to leave running - they fall short fast.
How to Play a Whole Folder as a Slideshow (The Easy Way)
This is exactly what Slideshower was built for: playing a full-screen slideshow directly from a folder, with none of the friction of importing into Photos app.
Step 1: Point Slideshower at your folder
- Open Slideshower
- Drag and drop your photo folder into the app window - or click “Select files or folders” and browse to it
- Every photo and video inside (including subfolders) loads instantly
Your files never move. There’s no library, no import step, no duplicating anything.
Step 2: Set your interval and start playing
Choose how long each photo displays - anywhere from a second to as long as you like - pick a transition (Cross-Fade or Ken Burns), and hit Start. The slideshow runs full-screen, advancing automatically at the interval you set. You can also use a manual mode (available in “Advanced Options”) to navigate throught your slideshow with the arrows on your keyboard.
Step 3: Works from external drives and USB too
Slideshower plays folders wherever they live - your internal drive, an external hard drive, or a USB stick plugged straight in. Just point it at the folder on that volume the same way you would locally.
How to Randomize Photos in a Folder
If you want your folder slideshow in random order rather than filename or date order, this is where the built-in tools really fall behind. Neither Quick Look nor Preview offers a shuffle option - the closest you can get is manually renaming files with random prefixes so they sort differently, which is tedious and gives you the same “random” order every time you play it back.
Slideshower has a real Shuffle mode built in:
- In the “Settings” area, check the Shuffle checkbox to enable this mode
- Start your slideshow
That’s it. Your photos and/or videos play in a genuinely randomized order, and it’s a different order every single time you hit play - not a one-time re-sort. This is the difference between “mac photos slideshow random order” done properly and the workarounds people resort to when their tools don’t support it natively.
Add Music or AirPlay to a TV (Optional)
Once your folder is playing as a slideshow, you can layer on a couple of extras:
- Background music - add your own audio tracks to play alongside the slideshow. Here’s the full guide on adding background music to Mac slideshows.
- AirPlay to a TV - send the slideshow to a smart TV or Apple TV for a bigger screen. See the AirPlay slideshow guide for setup steps.
- Live Mode - if you’re expecting more photos to land in the folder (say, from guests at an event), Live Mode watches the folder and automatically adds new photos to the slideshow as they appear. Check out the Live Mode guide for details.
Built-in vs. Slideshower: Quick Comparison
| Feature | Finder Quick Look | Preview App | Slideshower ✓ |
|---|---|---|---|
| Play a folder directly (no import) | Yes | Yes | Yes |
| True random/shuffle order | No | No | Yes |
| Adjustable timing per photo | No | Limited | Yes |
| Background music | No | No | Yes |
| Plays videos mixed with photos | Limited | No | Yes |
| Auto-updates when new photos are added | No | No | Yes (Live Mode) |
FAQ
Can I play a slideshow from a USB drive or external hard drive on Mac? Yes. Both Quick Look/Preview and Slideshower can play photos directly from an external drive or USB stick - just point them at the folder on that volume. Slideshower additionally handles subfolders and mixed photo/video files automatically.
Do I need to import my folder into the Photos app first? No. Slideshower plays photos and videos directly from wherever your folder already lives - no import, no library, no duplicating files.
Can I view a folder of photos as a full-screen slideshow without any extra software? Yes, using Finder Quick Look (select the photos, press Space, click play) or the Preview app’s slideshow view (⌘ + Shift + F). Both work for a quick look, but neither supports shuffle, custom timing and transitions or music.
Can I add music to a folder slideshow on Mac? Not with the built-in tools. Slideshower lets you add background audio tracks that play alongside your folder slideshow - see the background music guide.
Get Started
If you just want your folder of photos playing as a full-screen, randomized slideshow without touching the Photos app, download Slideshower for free (up to 150 photos). For unlimited photos, a one-time license is $19 - no subscriptions, ever.
Questions or feedback? Reach me at hello@slideshower.com.
Best, Pawel