Image sizing for Standard Card layouts
The viewable area of a Standard Card image will change depending on the device it's being viewed on.
That being said, the following guide can be used when creating the image so that the contents of the image can be controlled.
Images should be 750 px wide by 350 px tall. Within that area, an area of approximately 550px wide by 300 px tall will be viewable on most devices when using the Standard card layout (the area within the red box below).
The area outside of the centre (the area outside of the red box below) will still be viewable on certain devices.