Question about a model viewer for PSOBB

[GHOSTS]

I know Schthack released a model renderer a long time ago, but the viewport is at a fixed width and height, which makes it difficult to take high-quality screenshots (think: the image quality seen at http://universps.online.fr/pso/bb/monstres/liste.php). Is there a model viewer that has the viewport not at a fixed size?

I've added a picture of my problem with Schthack's model viewer to show what I'm seeing.