$response = $response->content() if($response->is_success()); die Dumper($response); ##

##

$ perl test.pl
$VAR1 = '▒PNG

IHD▒6n▒sRGB▒▒▒gAMA▒▒
                    ▒a cHRMz&▒▒▒▒▒u0▒`:▒p▒▒Q##

$response = $response->decoded_content() if($response->is_success());
die Dumper($response);

####

$ perl test.pl
$VAR1 = '▒PNG

IHD▒6n▒sRGB▒▒▒gAMA▒▒
                    ▒a cHRMz&▒▒▒▒▒u0▒`:▒p▒▒Q##

$response = $response->content() if($response->is_success());
$response = utf8::downgrade($response);
die Dumper($response);

####

$ perl test.pl
$VAR1 = 1;