i've written a bigger example in the node Re^2: Swimsuits2004, but to be short: 
#!/usr/bin/perl -w
use strict;
use Image::Magick;

my $file="path/to/yourfile.jpg"

my $image = Image::Magick->new;
$image->Read($file);

my ($x,$y) = $image->Get('width', 'height');

[download]
 Oops: no Image::Magic for you... Indeed use Image::Size, but it's not that powerfull: 
#!/usr/bin/perl -w
use strict;
use Image::Size;
($x, $y) = imgsize("path/to/yourfile.jpg");

[download]

but for resizing i'd prefer Image::magic, but an alternative could be Image::Processor
another idea is to use the Gimp in Perl.
for the code below to work, refer to:Image size in pure perl, you need 


sub sizeJPG {
  return unless $_[0];
    my ($width, $height);
    ($height,$width) = unpack( "nn", $1 ) if $_[0] =~ /\xFF\xC0...(...
+.)/;
  return ($width,$height);
}

[download]

In reply to Re: getting the dimensions of a picture (jpeg) by jbrugger
in thread getting the dimensions of a picture (jpeg) by Anonymous Monk

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