exclude file types / .ext

[sklnner]

I understand this has been discussed before but i tried both recommendations i found and they didn't work.

Is there any way to select the specific file extensions i want to view (*view, not open) in XnView (Viewer) and to exclude other file extensions that i don't want to view in XnView (Viewer)?

So lets say i open a 3D rendered image file with XnView (a common image file like .jpg, .epr, .bmp, .png, .psd etc).
But the folder also contains the 3D scene files (in uncommon non-image file extensions)
But inside the 3D scene files themselves, there are image data (thumbnails of the scenes, thumbnails of the application etc).
So when i navigate the folder, XnView (Viewer) shows me the rendered images (that i want to view) but also the images contained inside the 3D scene files (which i don't want to view).
Is there a way to exclude the files that i do not want XnView to show, by their extension?

Thank you for your time.

[xnview]

you can use the 'custom files' in options>File list