Reduce the font size, rotate the page to landscape or try this.

#!perl
use strict;
use warnings;
use PDF::API2; 

my $save_pdf_as = "mypdf.pdf";
my $pdf = PDF::API2->new();
my $page = $pdf->page()
               ->mediabox('Letter');
my $font = $pdf->corefont('Helvetica-Bold');

my $text = $page->text()
                ->font($font, 20);
$text->lead(25);
$text->translate(100, 700);  

while (<DATA>){
  $text->paragraph($_, 400, 400, -align => "left" ); # width height
  $text->cr(-5);
}
$pdf->saveas($save_pdf_as);

__DATA__
line 1 is a very long line that extends past the end of the page
line 2 is also very long line that extends past the end of the page
line 3
line 4
[download]

The height of the paragraph box needs to be large enough for the text

If you need to spread the text across multiple pages then it can get complicated !

thank you poj once again for helping me. The goal is to spread the text across multiple pages. And please help me out from this.please

What is the max number of characters you would ever expect in one line of data ?.
What is the smallest font you can have ?

poj