Hi, All! I may be the last to figure this out, but here it is, for any that haven't, yet. With Poser4, I used to make better quality, rendered thumbnails (rsr previews) with the old trick of rendering onto background, moving the figure aside, and saving to a library with just the rendered image on the background visible in the thumbnail. With Pro Pak, I lost that capability - the background is always blank in the png's that are saved with library items. - lots of other features more than made up for it, so I didn't sweat it too much. A few of the Items I've bought or downloaded here and there for poser were transmapped. The rsr's or png's that came with them only showed a faint cloud of dots, or a cartoon rendered preview. (Especially Hair products) Problem is, having bought & downloaded dozens of (for example) hair items, I tend to overlook those that just show a bald figure for a preview; the names alone aren't enough to remind me what they are. I was going thru re-organizing some of my library folders, muttering about how hard it was to know how to sort styles that I had no clue what they looked like, unless I'd happened to print out the page I'd downloaded or bought them from (like I could ever find it when I wanted it :-)), when old idea surfaced & I decided to try it out.

I started Poser, loaded a lo-poly figure, and put a transmapped hair on it, Framed & rendered the hair, & saved to a JPG.
Next I loaded a simple one-sided square prop (comes with poser) placed it BETWEEN the camera and the figure, applied the rendered JPG to the square as a texture, re-selected the hair item, and saved it to the hair library.
Worked like a charm! (see picture)
After a few tries, I got it down to 2-5 minutes per item, and now I've got rendered thumbnails that are actually useful to me for 6-8 different hairs that I've bought at one time or another, but rarely ever used.
I know there's utilities that are supposed to do the same, but I have little enough time to play with Poser, that I keep putting off learning most of the external programs that a lot of you find so useful. (My bad, I know)
I'm tickled by this, as it can be done IN POSER, with just a couple minutes effort. - I'm pretty jazzed, actually.
The main thing to remember, for anyone who tries this is to ALWAYS RE-SELECT THE TRANSMAPPED ITEM YOU WANT TO SAVE IN THE LIBRARY BEFORE SAVING! - otherwise you'll find you've actually saved the textured square, or a camera setting or something.
Anyway, I hope someone else finds this usefull. (Especially the wonderfully creative people who create terrific transmapped hair & such for the marketplace, but only supply dot-cloud thumbnails).

Render on!
Jerry B
leather-guy

By the way the Item I used for the example is the Smart Hair for Victoria & P4 by (I think) Alla, a great product I'm sure I'll use a lot more often, now.

What a clever idea!!! Many thanks!

Good idea. B) Pro Pack users do have an alternative. Save your object to get the PNG. Then render into a new window with the window set to 91x91 pixels, save the render as a PNG over the original PNG and you get the rendered preview, with that cool "shadowed" look too. You can do it with RSR`s but you need a converter (RSRconv), outside of Poser.

Or you can use Yarp's P3dO Explorer which allows you copy, and then edit the thumbnail (using your favorite paint program) and then paste it back into the .rsr. You can make the thumbnail anything you want, including a 91x91 render from Poser. ... An example is shown above.