diff --git a/src/ImageResizer.php b/src/ImageResizer.php
index 540bd97..6909687 100644
--- a/src/ImageResizer.php
+++ b/src/ImageResizer.php
@@ -20,7 +20,9 @@ $params = new ResizeParams($_GET);
 $resizer = new Resizer($imageDb, $logger);
 
 try {
-    echo $resizer->performResize($imgPath, $params);
+    $image = $resizer->performResize($imgPath, $params);
+    header("Cache-Control: max-age=86400, public");
+    echo $image;
 } catch (\Exception $e) {
     $logger->error($e->getMessage());
     http_response_code(500);