PHP 7 FPDI Library Example to Create Thumbnails of Existing PDF Document in Browser.
<?php //your variables $filename = 'Brand-Guide.pdf'; use setasign\Fpdi\Fpdi; require_once('fpdf/fpdf.php'); require_once('fpdi2/src/autoload.php'); $pdf = new Fpdi(); $pageCount = $pdf->setSourceFile($filename); $width = $pdf->GetPageWidth() / 2 - 15; $height = 0; $_x = $x = 10; $_y = $y = 10; $pdf->AddPage(); for ($n = 1; $n <= $pageCount; $n++) { $pageId = $pdf->importPage($n); $size = $pdf->useImportedPage($pageId, $x, $y, $width); $pdf->Rect($x, $y, $size['width'], $size['height']); $height = max($height, $size['height']); if ($n % 2 == 0) { $y += $height + 10; $x = $_x; $height = 0; } else { $x += $width + 10; } if ($n % 4 == 0 && $n != $pageCount) { $pdf->AddPage(); $x = $_x; $y = $_y; } } $pdf->Output('F', 'thumbnails.pdf');
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