SetImportUse();
$mpdf->Thumbnail('sample_orientation2.pdf', 4, 5); // number per row // spacing in mm
$mpdf->WriteHTML('Now with rotated pages
');
$mpdf->Thumbnail('sample_orientation3.pdf', 4); // number per row // spacing in mm
$mpdf->WriteHTML('Now with more rotated pages
');
$mpdf->Thumbnail('sample_rotated.pdf', 4); // number per row // spacing in mm
$mpdf->Output();