The Mobile Leaderboard Ad (320 x 50) is also called the Smartphone Leaderboard. It is the most common ad unit in mobile phones and the top performer on AdSense. But it generates less revenue because it is not very large. If used, have a way for a mobile user to close them to avoid being annoying. But the advantage is it is less expensive and usually sold as anchor units.
Mobile Leaderboard Ads have a height of 50 px and width of 320 px for an aspect ratio of 6.4:1 on mobile devices. Online advertisements support JPG, PNG, and GIF formats with maximum file sizes of 150 KB.
The Mobile Leaderboard Ad (320 x 50) is also called the Smartphone Leaderboard. It is the most common ad unit in mobile phones and the top performer on AdSense. But it generates less revenue because it is not very large. If used, have a way for a mobile user to close them to avoid being annoying. But the advantage is it is less expensive and usually sold as anchor units.
Mobile Leaderboard Ads have a height of 50 px and width of 320 px for an aspect ratio of 6.4:1 on mobile devices. Online advertisements support JPG, PNG, and GIF formats with maximum file sizes of 150 KB.