use -alpha Background to ignore fully-transparent pixels during comparison in image_optim_spec
use -alpha Background to ignore fully-transparent pixels during comparison in image_optim_spec
weheartit/image_optim,toy/image_optim,weheartit/image_optim,mihailim/image_optim,ramiroaraujo/image_optim,toy/image_optim,weheartit/image_optim,mihailim/image_optim,toy/image_optim,mihailim/image_optim,ramiroaraujo/image_optim,ramiroaraujo/image_optim