[magick-users] Filters in PNG

[Claus Cyrny]

Hi,

I would like to know where I specify the 'filter-type' option in
'convert'? The docs
<http://www.imagemagick.org/script/command-line-options.php#quality> are
somewhat confusing to me here. There's
only the option '-quality'.

TIA,

Claus

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