Not possible to preview (spacebar) png files ? track snagit library?

I have many .png files (annotated snapshots) and am disappointed that I cannot preview them with spacebar.
Is it possible to have trickster track my snagit image library ?
thanks in advance for your time and help

PNG files can be previewed, of course.
Trickster is using the regular QuickLook window to preview, the same way that you would get in Finder. Can you preview other types of files?
I’m not aware of how SnagIt image library operates, I don’t have that application. Does it appear in Finder as one file or as a regular folder? If it appears like one file that you cannot navigate to in Finder (unless using “Show Package Content” menu item in Finder), then Trickster will skip it since these.