If you want to add a download link. When click this link then any type of file,image, pdf will be download.You can do this using a simple php script. Yon can follow this code
First Create a simple html file where you want to add download link.
<a href="download.php?file=techpark_photo.jpg">Download</a>
i want to download a picture name “techpark_photo.jpg” so parameter is file name “techpark_photo.jpg”.
Then create a php file name “download.php” which you use in above file.
<?php $file = $_GET["file"]; if (file_exists($file)) { header('Content-Description: File Transfer'); header('Content-Type: application/octet-stream'); header("Content-Type: application/force-download"); header('Content-Disposition: attachment; filename=' . urlencode(basename($file))); // header('Content-Transfer-Encoding: binary'); header('Expires: 0'); header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); header('Pragma: public'); header('Content-Length: ' . filesize($file)); ob_clean(); flush(); readfile($file); exit; } ?
Important thing is that picture and script same folder if you change this then you can use your folder directory.
If you face any problem then please inform me, i will try to help you.