In addition to dmitri's comment, You can get the mimetype during upload via: 
my $q = CGI->new;
my $filename = $q->param('file_field_name');
my $metadata = $q->fileInfo($filename);

my $mimetype = $metadata->{'Content-Type'};

[download]
As documented in the CGI.pm module --
Clayton

In reply to Re: Re: Writing binary data directly to webpage by clscott
in thread Writing binary data directly to webpage by ttcuberat

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