What are the best ad sizes for desktop and mobile devices?

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What are the best ad sizes for desktop and mobile devices?

Asked on Sep 15, 2025

Answer

Choosing the right ad sizes for desktop and mobile devices is crucial for maximizing visibility and click-through rates. Google AdSense recommends specific ad sizes that perform well across different devices.

Example Strategy: For desktop, use large rectangle (336x280) and leaderboard (728x90) ads, while for mobile, consider medium rectangle (300x250) and large mobile banner (320x100) ads for optimal performance.

Additional Comment:

Responsive ad units can automatically adjust to fit different screen sizes, providing flexibility across devices.
Consider the layout of your website to ensure ads do not disrupt user experience.
Test different ad placements and sizes to determine which combinations yield the highest revenue.

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