diff --git a/demo/http.php b/demo/http.php
index <HASH>..<HASH> 100644
--- a/demo/http.php
+++ b/demo/http.php
@@ -6,4 +6,24 @@ if (isset($_GET['sleep'])) {
     sleep(10);
 }
 
+if (isset($_GET['img'])) {
+    $fp = fopen(__DIR__ . '/../website/template/img/logo-small.png', 'rb');
+    header('Content-Type: image/png');
+    header('Content-Length: ' . filesize(__DIR__ . '/logo.png'));
+    fpassthru($fp);
+    exit(0);
+}
+
+if (isset($_GET['json'])) {
+    header('Content-Type: application/json');
+    echo json_encode(['Hello' => '🌍']);
+    exit(0);
+}
+
+if (isset($_GET['weird'])) {
+    header('Content-Type: foo/bar');
+    echo 'Hello 🌍';
+    exit(0);
+}
+
 echo 'Hello world!';
Add cases to manually test #<I>