Yes, the size of your banner ad can really affect how it performs on different devices. Smaller banners might show clearly on phones, but they can look too small on desktops. On the other hand, larger banners might look good on a computer screen but appear cut off or hard to read on mobile. That’s why it’s important to design your banners in different sizes for both desktop and mobile. Many ad platforms even suggest specific sizes that work better for certain devices. If people can't see the full message or image on their screen, they may not click. Testing different sizes and checking how your ads appear on both mobile and desktop can help you figure out what works best. What’s your take on this?