When uploading images within Stampede, we resize the image to fit onto the customer's device. These sometimes may look a bit stretched or too large, the best image sizes can be seen below:
Reviews
Logo - 660x330
Background - 2000x1500
Captive Portal
Logo - 660x330
Background - 2000x1500
Upsell (Story) - 600x1200
Loyalty
Logo - 520x180
Gift Cards
Logo - 660x330
Background - 1000x1500
Marketing
Small images (logos) - 660 x 330
Larger images - 600x1200