Force Preview to open all selected images in one window

Solution 1:

Short answer: you can’t. This is a bug in Mavericks.

What I do is:

• Open the group of images
• Close all windows in Preview if it has opened more than one window (shortcut: ⌘altw)
• Re-open the same group of images

Most of the time, I have all my images in one window the second time I open them.

Solution 2:

Had the same problem. It's simply in the prefernces setup "open images in one window"

Solution 3:

Before reading zinne's answer, I avoided the problem by using Quick Look instead of Preview. It can be found in the context menu of selected images, between Make alias and Share, at least in my Maverics 10.9.5.

Solution 4:

I keep the Preview.app icon in my dock (OS X 10.9.5). Drag and drop a folder of images onto the Preview.app icon. This will open all images in a single Preview window.