How to make a thumbnail image from a PDF?

Question

PHP

I have a simple code, it loads a PDF, shifts it to the right place and renames it.
But here comes another problem.
It is necessary to make a preview from the PDF (first page) during the download.
The preview should be loaded in the same place, with the same name and .jpg extension.
ImageMagick works successfully on the server.

$limit_size = 50*1024*1024; // 1 Mb
    $valid_format = array("pdf");
    $error_array = array();
    $path_file = "../oc-content/uploads/releases/";
    $rand_name = 'postroyka' . date('Ymd',date('w')!=6? strtotime("last Saturday"): time());
    if($_FILES){
        if($_FILES["upload_file"]["size"] > $limit_size){
            $error_array[] = "Размер файла превышает допустимый!";
        }
        $format = end(explode(".", $_FILES["upload_file"]["name"]));
        if(!in_array($format, $valid_format)){
            $error_array[] = "Формат файла не допустимый!";
        }
        if(empty($error_array)){
            if(is_uploaded_file($_FILES["upload_file"]["tmp_name"])){
                move_uploaded_file($_FILES["upload_file"]["tmp_name"], $path_file . $rand_name . ".$format");
            }else{
                $error_array[] = "Ошибка загрузки!";
            }
        }
    };

Answer 1

I'll just put it here, I came up with the solution myself, it turned out to be easier than I thought.

$im = new imagick( $path_file . $rand_name . '.pdf[0]' );
$im->setCompression(Imagick::COMPRESSION_JPEG);
$im->setCompressionQuality(60);
$im->setImageFormat('jpeg');
$im->resizeImage(290, 375, imagick::FILTER_LANCZOS, 1);
$im->writeImage($path_file . $rand_name . '.jpg');
$im->clear();
$im->destroy();