Can Qimage print a small image like a thumbnail and include the file name under the image?
Yes of course,
You didn't explain how many you have, but this is the way to go.
At the print properties area lower right of the main screen, click the print size button and select Custom.
In the box that opens you can select Contact sheet with info and set the number of prints to the page, or if you have some amount more than about 10, use the other selection;Layout Predefined Page set.
Another box opens with pre defined pages. You will see 12 UP. 25 up, and 28 up.
That will allow you to drag and drop your images into the template that appears on your main screen and the info will be with it as neat as can be.
If you have 100 images, that's OK. Qimage will make page 2 and page 3 and page 4. Just keep double clicking the thumbnail images that you want to add.
Fred