Easy Slider Scaling Question

Hi and thank you for the great theme, for the most part. I have an important question for photographers. Regarding Easy Sliders, or really any ENFOLD sliders. – is there a way to Scale (shrink) images so they fit on the screen, without cropping them and losing half the image?? I dont want my models to loss their heads when they are tall.

The only option I found is use the Full size no scale option, but then the images are often way to big to fit in one page.

I do not want to have to resize and reload ALL my images multiple times, for various sliders. Also doing so would take away detail I want visible if the client decides to open the image in a large Lightroom box.

Any suggestion??