Ever wish you could view your cover art in a (optionally) frameless image viewer? Say, perhaps to display it over an Amazon page displayed in your web browser, to see how it looks compared to books already published? Frameless option, rapid sizing/zoom via mouse wheel, … Size and drag your cover art over an existing book or between existing books and see how it looks among those already there.
There are likely other similar frameless/borderless viewers.
P.S. I’ve noticed that the quality of shrunken images is not as good in nomacs as it is in some other image viewers, IrfanView for example. So, one may want to judge image quality of shrunken images in other viewers, but the borderless/frameless feature remains useful for viewing side by side over an Amazon page.