Some banner sizes perform better on desktop because they fit well within website layouts and catch more attention. The most common ones are 728x90 (leaderboard), 300x250 (medium rectangle), and 160x600 (wide skyscraper). These sizes are often placed in spots where people are more likely to notice them, like at the top, in the sidebar, or within content. They are also widely supported across most ad networks and websites, which gives your campaign more reach. But it’s not just about size. The message and design of the banner also matter a lot. Have you found a size that gets better results in your campaigns?