Image::ExifTool works good. 

my $file = '';
my $File_Info= '';
use Image::ExifTool 'ImageInfo';
my $exifTool = new Image::ExifTool;
$exifTool->Options(Binary => 1, Composite => 1, DateFormat => '%Y:%m:%
+d %H:%M:%S', Unknown => 2, Verbose => 0);
# Get file info
my $info = $exifTool->ImageInfo($file);
$File_Info .= "$_ => $$info{$_}<br>\n" foreach (sort keys %$info);
print $File_Info;

[download]

There are modules that can re-size the image, but you will find that not all images will size down as well as others.

I read your post to fast. I would not suggest doing that. Just limit them and force them to make an image that fits. Because you will end up making it to hard for yourself to program. When you can do the above and have the user do the work that should have been done to the image.

In reply to Re: Dealing with rectangular images by $h4X4_&#124;=73}{
in thread Dealing with rectangular images by htmanning

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.