Visualizing the Weight Loss

Hi Everyone
Does anyone know of any tools out there that gives you an approximate idea of how much you would look after losing those extra pounds? Hopefully we upload a photo, or provide some measurements and the tool gives a before and after comparison picture.

I am not good at imagining and looking back at my pictures from the 20s really doesnt help. I am dying to know what will I look like 20 lbs lighter at my current age. Also thinking this will be a big motivator to keep going.

Any ideas?

Thanks