diff --git a/api/photo.php b/api/photo.php
index 054901d..e8ddb75 100644
--- a/api/photo.php
+++ b/api/photo.php
@@ -106,10 +106,15 @@ if ($size === 'small' || $size === 'mini') {
 }
 
 $mime = function_exists('dol_mimetype') ? dol_mimetype($full) : 'application/octet-stream';
+$download = !empty($_GET['download']);
+$filename = $download ? basename($full) : '';
 
 header('Content-Type: '.$mime);
 header('Content-Length: '.filesize($full));
 header('Cache-Control: private, max-age=3600');
 header('Access-Control-Allow-Origin: *');
+if ($download) {
+    header('Content-Disposition: attachment; filename="'.addslashes($filename).'"');
+}
 readfile($full);
 exit;