how to make a jpg a pdf code example
Example 1: convertir pdf en jpg
If you have Adobe Acrobat : https://helpx.adobe.com/acrobat/using/pdf-to-jpg.html
If you don't use it : https://pdf2jpg.net/
It is directly on browser (and they plant trees)
Example 2: jpg to pdf
$images = array("your-file.jpg"); //You can use a URL as well
$pdf = new Imagick($images);
$pdf->setImageFormat('pdf');
$pdf->writeImages('combined.pdf', true); //The file name
//When ran, it will save in the same directory as the php file/script