image quality at 75% 100% and 150%

[8088y80y]

I need to place a logo and various graphic icons into FM 5.

After placing the pictures into a container, they look sharp at 100% view.

But when reducing the view to 75% or enlarging it to 150%, image quality is lost.

What is the best way to import graphics (mac & windows) into FM5 while preserving image integrity when the page is reduced or enlarged?

Thanks in advance for your advice