DOMPdfModule Default Configuration

module.config.php

return array(
    'dompdf_module' => array(
        'dpi' => 300
    ),
)

PdfController.php

namespace Yournamespace\Controller;

use DOMPDFModule\View\Model\PdfModel;
use Zend\Mvc\Controller\AbstractActionController;

class PdfController extends AbstractActionController
{
    public function testAction()
    {
        $pdf = new PdfModel();
        $pdf->setOption('filename', 'monthly-report'); // Triggers PDF download, automatically appends ".pdf"
        $pdf->setOption('paperSize', 'a4'); // Defaults to "8x11"
        $pdf->setOption('paperOrientation', 'landscape'); // Defaults to "portrait"

        return $pdf;
    }
}