Hey guys, thanks for replying and giving me information. Please look at the code, the output says 400 url is missing. The complete code.

#!/usr/local/bin/perl
use LWP::Simple;
use HTML::Parse;
use HTML::Element;
use URI::URL;
use HTTP::Request;
use HTTP::Tiny;
use vars qw($opt_h $opt_i $opt_a);
use Getopt::Std; 
 

#system "cls";
#print "\n\n";

getopts('hia:');
my $all = !($opt_i || $opt_a);    # all=1 when no option is set

if ($opt_h || $#ARGV==-1) {  print_help( ); # print help text when -h 
+or no args
  exit(0);
}

sub print_help {
  print <<"HELP";
usage: $0 [-hia] [URL]
 
 -h help
 -i find img references only
 -a find hyper link references only
 
Example:  $0 -a https://www.url_here.com
 
HELP
}

$html        = get $ARGV[0]; # always use [0]
$parsed_html = HTML::Parse::parse_html($html);

while ($html = shift @ARGV) {
my ($code, $type, $data)  = get_html($html, $opt_i, $opt_a);
if (not_good($code, $type)) { next; }
if ($opt_i || $all) { print_images($data, $html); 
exit(0);
}
if ($opt_a || $all) { print_hyperlinks($data, $html); 
exit(0);
}
}
sub get_html( ) {
  my($html, $want_image, $want_link) = @_;
 
# Create a User Agent object
  my $ua = new LWP::UserAgent;
  $ua->agent("Mozilla/61.0.0 (Windows; U; Windows 8.1; de; rv:1.9.2.3)
+ Gecko/20100401 Firefox/61.0.0 ");
 
 
# Ask the User Agent object to request a URL.
# Results go into the response object (HTTP::Reponse).
#  use HTTP::Request::Common;
#  my $request = GET $html;
#  my $request = GET $ARGV[0];

my $url = $html;

print "$response->{status} $response->{reason}\n";
print $response->{content} if length $response->{content};
    
my $request = new HTTP::Request('GET', $ARGV[0]);
my $response = HTTP::Tiny->new->get($url);

my $response = $ua->request($request);
if ($response->is_success) {
     print $response->content;
} else {
     print $response->error_as_HTML;
}
print "$response->{status} $response->{reason}\n";
print $response->{content} if length $response->{content};
}
  
sub not_good {

  my ($code, $type) = @_;
 
  if ($code != RC_OK) {
    warn("$html had response code of $code");
    return 1;
  }
 
  if ($type !~ m@text/html@) {
    warn("$html is not HTML.");
    return 1;
  }
  return 0;
}  

sub print_images {
 
  my ($data, $model) = @_;
 
  my $parsed_html=HTML::Parse::parse_html($data);
  for (@{ $parsed_html->extract_links(qw (body img)) }) {
    my ($link) = @$_;
    my ($absolute_link) = globalize_url($link, $model);
    print "$absolute_link\n";
  }
  $parsed_html->delete( ); # manually do garbage collection
}
 
sub print_hyperlinks {
 
  my ($data, $model) = @_;
 
  my $parsed_html=HTML::Parse::parse_html($data);
  for (@{ $parsed_html->extract_links(qw (a)) }) {
    my ($link) = @$_;
    my ($absolute_link) = globalize_url($link, $model);
    print "$absolute_link\n";
  }
  $parsed_html->delete( ); # manually do garbage collection
}

sub globalize_url( ) {
 
  my ($partial, $model) = @_;
  my $url = new URI::URL($partial, $model);
  my $globalized = $url->as_string;
  return $globalized;
}
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