in reply to permagick jpg compression

I wonder if your image is just getting compressed better but at the same quality. If you want to test this, convert the original image and a resulting 13K image both to a lossless format and compare them. Comparisons would be easy in Portable_pixmap format.

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Re^2: permagick jpg compression
by martell (Hermit) on Mar 19, 2007 at 20:22 UTC
    I second this. If i execute following code on a file, i get a small reduction in file size, but no loss in quality. If i execute the same code with quality '10', i get a much smaller file, but also a great loss in quality. 
    use Image::Magick;

my $image = Image::Magick->new;

my $x = $image->Read('test.jpg');

$image->Set(compression => 'JPEG');
$image->Set(quality => '100');

$x = $image->Write('out.jpg');

    [download]
    So it is normal to see a small decrease in file size.
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