Dimension

All Card Types can be of the following dimensions –

Width x Height (in pixels)
450 x 300	450 x 325	450 x 350	450 x 375	450 x 400
475 x 300	475 x 325	475 x 350	475 x 375	475 x 400
500 x 300	500 x 325	500 x 350	500 x 375	500 x 400
525 x 300	525 x 325	525 x 350	525 x 375	525 x 400
550 x 300	550 x 325	550 x 350	550 x 375	550 x 400

Additionally, Postcard & Animated Cards can be of the following dimensions –

Width x Height (in pixels)
350 x 475	400 x 500	425 x 400