I just found it now, but there is actually a module called Image::GD::Thumbnail on CPAN. Example code from the docs: 
use GD;
use Image::GD::Thumbnail;

# Load your source image
open IN, 'E:/Images/test.jpg'  or die "Could not open.";
my $srcImage = GD::Image->newFromJpeg(*IN);
close IN;

# Create the thumbnail from it, where the biggest side is 50 px
my ($thumb,$x,$y) = Image::GD::Thumbnail::create($srcImage,50);

# Save your thumbnail
open OUT, ">E:/Images/thumb_test.jpg" or die "Could not save ";
binmode OUT;
print OUT $thumb->jpeg;
close OUT;

[download]
Hope this helped.
CombatSquirrel.
Entropy is the tendency of everything going to hell.

In reply to Re: Making jpg thumbnails by CombatSquirrel
in thread Making jpg thumbnails by bradcathey

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.