Live window thumbnails as you cycle
Window titles don’t always tell the full story. The Preview Deck shows you live snapshots of each window as you cycle through the switcher, so you can see exactly what you’re switching to.
How it works
Enable in Settings
Open Settings → General and toggle “Show preview window.” This requires Screen Recording permission so Scopo can capture window thumbnails.
Open the switcher and cycle
Press Cmd+Tab and start cycling. A card stack appears next to the window list showing live thumbnails of your windows.
See previous, current, and next
The deck shows three overlapping cards: the previous window behind, the current window in focus, and the next window peeking below. As you cycle, the cards shift smoothly.
Switch with confidence
No more guessing which “Chrome” window is the right one. See the content before you commit.
Tips & tricks
Screen Recording
Preview Deck requires the Screen Recording permission. Without it, Scopo can’t capture window thumbnails. You can grant it in System Settings → Privacy & Security.
Performance
Thumbnails are captured using a high-performance private API that works even with Stage Manager. There’s no noticeable performance impact.
Privacy
Thumbnails are held in memory only and never saved to disk. When you close the switcher, they’re gone.
Ready to try the Preview Deck?
Download Scopo and start switching windows the way you think — by project.
macOS 13+ · 30-day free trial · No credit card