d :          # adjust the image quality to 00%         quality : 00          # list of transformations to apply (the "filters")         filters :              thumbnail :  { size : [000, 000], mode : outbound }              # create a 0px black border: center the thumbnail on a black background             # 0px larger to create a 0px border around the final image             background : { size : [000, 000], position : center, color : '#000000' }      # the name of the "filter set"     thumb_