iOS
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Maximum possible dimensions are 1,038 pixels x 1,038 pixels
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Images that are taller than 1,038 pixels will be downscaled with padding to give them a square appearance
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In other words, you can use an image up to 1,038 pixels wide x (any smaller number)
- We recommend using images that have a landscape orientation. Although a portrait orientation will work, it could make the push notification tall and awkward looking
Android
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Keep images between 800 and 1,038 pixels wide
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Maintain a landscape perspective, as rich push notifications on Android are cropped to something close to 16:9 (the exact ratio changes depending on the device)
For more information on sending rich push campaigns, see our User Guide docs.