I am adding twitter cards meta tag. I have tried this by adding dynamic values for twitter meta tags. I have page which having twitter card image as large in size like width:720 & height:960.
when i check with twitter card validator then image not get resize it looks bad.
Then i google and found that twitter card will not be cropped image unless they have an exceptional aspect ratio.
what is exceptional ratio ? How can i find out exceptional ratio for image and use that image as twitter card image meta tag ?