Retrieving unfitted PNG images for Tables or Single Record types

Hi Team.
Im working on creating slides using the Looker API and when I ran queries adding the result format PNG for tables or single records Looks the results are not fitted for the w/h that I set in the query string. Sometimes I got tables not showing all the rows or even all the columns, and in other cases for smaller ones Im receiving a lot of blank space in the file. Is there any way to fix this?

Thanks.

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