Hi grandfather, Your solution is fine. But when i give like this extra tags have been inserted. how can i avoid this. 
use strict;
use warnings;
use HTML::TreeBuilder;

my $sgml = <<SGML;
<html>
<greeting class="simple">Hello, world!<head>heading</head>
</html>
SGML

my $root = HTML::TreeBuilder->new ();
$root->ignore_unknown (0);
$root->parse ($sgml);

print $root->guts (0)->as_XML ();

[download]
Thanks for your suggestion

In reply to Re^4: read a file and insert closing tags if not present by valavanp
in thread read a file and insert closing tags if not present by valavanp

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