I have a second monitor and I want new Preview windows to open on the second monitor, not on my main display. I feel like I used to just drag a currently open window to the second display and then future windows would open on the second display. But not that does not seem to be happening anymore.
MacBook Pro (2021)
Try "Merging All Windows" first, then opening a new one should take care of this problem.
While viewing a window on your secondary monitor...
On your toolbar, select Window
From the dropdown bar, Select Merge All Windows
Then you can open a new window on your secondary monitor.
(This is what worked for me when I did it, just now)
I tried this and it did not work. I even quit Preview and made my dock go to the second monitor, opened Preview, and the open file box opens on the second monitor, but when I click on a file to open, it opens on the second monitor. I would attach a screen recording but it will only let me attach images.
I have some updates. I tried on my second monitor at home and the problem still persists. However, it only seems to apply to Preview. I tried opening a document with Word and a PDF with Adobe Acrobat and they both opened on the second monitor like they're supposed to.
Interesting! I wonder if Preview does this by default because it thinks we want a whole, unobstructed, view of an image while editing or viewing it. Maybe that's the thought process behind its action.
I haven't been able to find another solution so far, but I'm still working on it.
How can I make new Preview windows open on second display?
