Media Size Recommendations
These are the media recommendations by Nudge. Since the devices that consumers use today have a lot of different screen sizes, these are the best ratios that work well.
Note:
The size of the images should be below 5MB, and the size of GIFs and videos should be less than 10MB.
Mobile Stories
Recommended Dimensions: 1080 x 2160 or 1080 x 2400
Aspect Ratios: 9:18 and 9:20
Size of Story Cover: 500 x 500 or 400 x 400
Web Stories
Recommended Dimensions: 1080 x 1920
Aspect Ratios: 9:16
Size of Story Cover:
500 x 500 or 400 x 400 (For circular stories)
For rectangular stories, you can add an image with a 9:16 aspect ratio.