Losing a bit of image quality when publishing

Hi, everyone:

I've got a presentation full of website screenshots, and am losing a bit of image quality when I publish them into Articulate. Is there anything I can do to prevent this from happening, or is this just the nature of the beast?

Part of the problem may be the quality of the original images. Because they are full pages of a website, they don't look crystal clear when scaled down to powerpoint slide size.

I'm aware of the presentation setting options, and have been messing with them, with not much luck. The presentation will be put on client's LMS.  Anyway, thanks so much. --Daniel