This article provides the various ad sizes and formats supported for bidding in Authorized Buyers when you create a third-party display ad. Optimize reach and performance by using the top-performing ad sizes.
Tip: Publishers can send requests for multiple ad sizes in one bid request. For these callouts, include BidResponse.Ad.width and BidResponse.Ad.height for each creative in your bid response. Learn more in the Real-Time Bidding (RTB) Protocol.
Review ad sizes
| Ad size | Description | Desktop & Mobile web* | Mobile apps* |
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| 300x250 | Medium rectangle. Tends to have more inventory available for advertisers. | |
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| 336x280 | Large rectangle. Tends to have more inventory available for advertisers. | |
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| 728x90 |
Leaderboard. Tends to have more inventory available for advertisers. Used with tablet-optimized pages. |
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| 160x600 |
Wide skyscraper. Tends to have more inventory available for advertisers. Used along webpage sidebars. |
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| Interstitial |
Interstitial ad slots are only available in mobile apps and fill the entire screen. Eligible ads must be at least 50% of the width and 40% of the screen height. "Sizeless" ads are eligible for interstitial ad slots and dynamically expand to fill the screen. They are known as "fluid" or "responsive" ad slots. |
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* High-end mobile devices
| Ad size | Description | Desktop & Mobile web* | Mobile apps* |
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| 88x31 | Button. This format fits into small spaces. | ||
| 120x60 | Button. This format fits into small spaces. | ||
| 120x240 |
Vertical banner. This format fits into small spaces. This size may not perform due to its small size and limited supply of available display ads. |
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| 120x600 |
Skyscraper. This format fits into narrower spaces that don't accommodate the 160x600 wide skyscraper. The supply of available display ads for this ad size is more limited. This may lead to sub-optimal ad performance. |
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| 125x125 |
Button. This format fits into small spaces. This size may not perform due to its small size and limited supply of available display ads. |
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| 180x150 |
Small rectangle. This format fits into small spaces. This size may not perform due to its small size and limited supply of available display ads. |
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| 200x200 |
Small square. This format fits into smaller spaces that don't accommodate the larger rectangles. The supply of available display ads for this ad size is more limited. This may lead to sub-optimal ad performance. |
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| 200x446 | |
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| 220x90 | |
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| 234x60 |
Half banner. This format can fit into small spaces. This size may not perform due to its small size and limited supply of available display ads. |
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| 240x133 | |
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| 250x250 |
Square. This format fits into smaller spaces that don't accommodate the larger rectangles. The supply of available display ads for this ad size is more limited. This may lead to sub-optimal ad performance. |
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| 292x30 | |
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| 300x31 | |
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| 300x50 | Mobile-friendly web size | |
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| 300x100 | Mobile-friendly web size | |
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| 300x600 |
Half page. This format provides a larger space for an advertisers' message and can offer users a more rich engagement. One of the fastest growing sizes based on impressions. With this size, publishers are offering more visually impactful ad sizes that are preferred by brand advertisers. |
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| 300x1050 | Portrait IAB Rising Star | |
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| 320x50 |
Mobile leaderboard. This format is a mobile-optimized banner. Fills the width of a smartphone screen (for example, iPhone, Android, and BlackBerry 6). |
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| 320x100 | Mobile-driven ad format that provides twice the height of standard mobile banners. | |
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| 468x60 |
Banner. This format fits into smaller spaces that don't accommodate the 728x90 leaderboard. The supply of available display ads may be limited. This may lead to sub-optimal ad performance. Used with tablet-optimized pages. |
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| 960x90 | Sometimes used for the Pushdown IAB Rising Star. | |
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| 970x66 | |
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| 970x90 |
Large leaderboard. This size is ideal for high-definition content, such as videos, photos, animations, and applications. |
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| 970x250 | Billboard IAB Rising Star. This size is in high demand for Preferred Deals and Private Auctions. | |
* High-end mobile devices
| Ad size | Description | Desktop & Mobile web* | Mobile apps* |
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| 240x400 | Vertical rectangle. This size is popular in Russia. | |
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| 250x360 |
Triple widescreen. This is the second most popular size in Sweden. Performs well when placed along webpage sidebars. |
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| 580x400 |
Netboard. A popular size in Norway. Performs well when embedded within text content. |
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| 750x100 |
A popular size in Poland. Performs well in branding and direct response advertising campaigns. |
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| 750x200 |
The most popular ad format in Poland. Used in 53% of advertising campaigns. Performs best when placed above or just below the website menu. |
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| 750x300 |
A popular size in Poland. Used in 17% of advertising campaigns. It is the main alternative for 750x200. |
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| 930x180 |
Top banner. A popular size in Denmark. Performs well when placed above the main content. |
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| 950x90 |
Slider IAB Rising Star. A popular size in China. |
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| 980x90 | A popular European size. | |
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| 980x120 |
Panorama. The most popular size in Sweden and Finland. It can be used as a substitute in Norway. Performs well when placed above the main content. |
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* High-end mobile devices