There's another problem, which you would see immediately if you
use strict;.
Line 90 of your script has this line:
if ($start_height > 1 && $embed_height > 1 && $embed_width > 1) {
However, $embed_height and $embed_width are actually undefined (and treated as zero),
since they are not the same variables defined on line 19 of your script,
which are in a different scope:
my ($embed_width, $embed_height) = imgsize($opt{'i'});
New Year's Resolution: always use
strict and
warnings.
Update:
If you fix the above by moving the variable scope,
and if you follow BrowserUk's advice about overwriting your text with the image
(just move the $wrapbox->draw(1, $start_height); line to after the
image copy),
then your program will work.
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