Here are the image specifications for the Timeout Screen and the Ad Manager.
Timeout Screen Specs:
2048 x 1536 pixels
aspect ratio of 4:3
formats in .JPG or .PNG
Ad Manager Specs:
1024 x 1536 pixels
aspect ratio of 2:3
formats in .JPG or .PNG
Here are the image specifications for the Timeout Screen and the Ad Manager.
Timeout Screen Specs:
2048 x 1536 pixels
aspect ratio of 4:3
formats in .JPG or .PNG
Ad Manager Specs:
1024 x 1536 pixels
aspect ratio of 2:3
formats in .JPG or .PNG