get first page preview, number of pages and more details of pdf file

function pdf($filepath){
    $pdf = new \Spatie\PdfToImage\Pdf($filepath);
    $pdf->setResolution(100);
    $img = $pdf->setCompressionQuality(100)->saveImage(public_path().'/pdf/'.$pdf->getPage(1));
    $details= $pdf->getPages();
    $pdffile= [
        'img'  => $img,
        'pages'=> $details,
        'size' => $pdf->getNumberOfPages(),
        'size_bytes' => $pdf->getNumberOfPages(),
    ];
    return $pdffile;
}