Try the following to get an A4 landscape page: 
my $pdf = PDF::API2->new( -file => 'table.pdf' );
$pdf->mediabox(842, 595);

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For other paper sizes you can work out from the following table (taken from PDF::API2::Resource::PaperSizes): 
'4a'         => [ 4760, 6716 ],
'2a'         => [ 3368, 4760 ],
'a0'         => [ 2380, 3368 ],
'a1'         => [ 1684, 2380 ],
'a2'         => [ 1190, 1684 ],
'a3'         => [  842, 1190 ],
'a4'         => [  595,  842 ],
'a5'         => [  421,  595 ],
'a6'         => [  297,  421 ],
'4b'         => [ 5656, 8000 ],
'2b'         => [ 4000, 5656 ],
'b0'         => [ 2828, 4000 ],
'b1'         => [ 2000, 2828 ],
'b2'         => [ 1414, 2000 ],
'b3'         => [ 1000, 1414 ],
'b4'         => [  707, 1000 ],
'b5'         => [  500,  707 ],
'b6'         => [  353,  500 ],
'letter'     => [  612,  792 ],
'broadsheet' => [ 1296, 1584 ],
'ledger'     => [ 1224,  792 ],
'tabloid'    => [  792, 1224 ],
'legal'      => [  612, 1008 ],
'executive'  => [  522,  756 ],
'36x36'      => [ 2592, 2592 ],

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In reply to Re: pdf::table landscape by tangent
in thread pdf::table landscape by dsx

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