This topic shows the rules for images on Amazon devices.

Amazon image rules

Images may be in JPEG or PNG formats, with the appropriate file extensions. Only images in PNG format can be transparent, which provides a better visual experience. The judicious use of a transparent background makes your images appear to take on a wide range of shapes and sizes.
All sizes in pixels unless otherwise specified.
All templates use square or rectangular images in PNG and JPEG image formats. Note the aspect ratio for each template shown in the following table.
Provide several different image sizes because the device selects the smallest possible size that matches the desired aspect ratio and gives a clear image for the size of the screen where the image is being rendered. If you do not provide an image of the appropriate size, the next larger image size will be scaled down for use.
Images are compressed when sent and decompressed when received.
You must host the images at HTTPS URLs that are publicly accessible.
You should apply a 70% opacity black layer for background images, which provides optimal contrast between the image and text.
Background images with slight patterns or gradients are recommended to provide a consistent, high-quality appearance.

Amazon icon sizes

Icons represent the skill.

Name	Size	Type
Small Skill Icon	108 x 108	Small Icon: 108 X 108 PNG with transparency. Recommend 16 px padding on all sides.
Large Skill Icon	512 x 512	Large Icon: 512 X 512 PNG with transparency. Recommend 75 px padding on all sides.
Mobile App Icon	55 x 55	Displayed in the Alexa App on mobile devices for video skills.

Device	Resolution	Notes
Show	1024x600	Recommend background images with slight patterns or gradients to provide a consistent, high-quality appearance. For background images, a 70% opacity black layer should be applied for optimal contrast between the image and text.
Spot	480 x480	Echo Spot images are scaled-down as appropriate.
Cube	1920 x 1080