Image folder thumbnails contain non-images

Help & Support
1

Hello,
I may well have missed something obvious here, but when I have folders shown as thumbnails including 4 random images, I do not just get image files used. Some of my image folders get a thumbnail with 4 text files, or other non-image file-types, used for the 4 mini-images. How can I restrict the thumbnails for image folders to using only image files? I am sorry to ask such a banal question but this is really annoying me.

I am referring to the setting:
Preferences -> Lister Display Mode -> Thumbnails Mode -> Options -> Display Thumbnails for Folders -> Generate thumbnails from images inside folder
Unfortunately DOpus does not seem to generate the thumbnails ONLY from 'images inside folder', which, for image folders, seems a bit silly to me; I hope I am missing something.

2

Go to Preferences -> Plugins -> Viewer Plugins -> Text File Thumbnails -> Configure and turn off Include in folder thumbnails for all the file-extensions (in the list on the left).

FWIW, the default will change to 'off' for most extensions in the future.

3

Leo, thank you very much; I don't think that I would have found that option unaided. DOpus is looking very neat now: I get the interesting, or informative, thumbnails for text-type files and only images in the image-folder thumbnails - excellent.

Regards,
Arthur.