diff --git a/module/Core/config/routes.config.php b/module/Core/config/routes.config.php
index 82abef30..a95e8e96 100644
--- a/module/Core/config/routes.config.php
+++ b/module/Core/config/routes.config.php
@@ -29,7 +29,17 @@ return [
         ],
         [
             'name' => Action\QrCodeAction::class,
-            'path' => '/{shortCode}/qr-code[/{size:[0-9]+}]',
+            'path' => '/{shortCode}/qr-code',
+            'middleware' => [
+                Action\QrCodeAction::class,
+            ],
+            'allowed_methods' => [RequestMethod::METHOD_GET],
+        ],
+
+        // Deprecated
+        [
+            'name' => 'old_' . Action\QrCodeAction::class,
+            'path' => '/{shortCode}/qr-code/{size:[0-9]+}',
             'middleware' => [
                 Action\QrCodeAction::class,
             ],
diff --git a/module/Core/src/Action/QrCodeAction.php b/module/Core/src/Action/QrCodeAction.php
index 4a8b7db5..0fb5089b 100644
--- a/module/Core/src/Action/QrCodeAction.php
+++ b/module/Core/src/Action/QrCodeAction.php
@@ -48,11 +48,15 @@ class QrCodeAction implements MiddlewareInterface
             return $handler->handle($request);
         }
 
+        $query = $request->getQueryParams();
+        // Size attribute is deprecated
+        $size = $this->normalizeSize($request->getAttribute('size', $query['size'] ?? self::DEFAULT_SIZE));
+
         $qrCode = new QrCode($shortUrl->toString($this->domainConfig));
-        $qrCode->setSize($this->getSizeParam($request));
+        $qrCode->setSize($size);
         $qrCode->setMargin(0);
 
-        $format = $request->getQueryParams()['format'] ?? 'png';
+        $format = $query['format'] ?? 'png';
         if ($format === 'svg') {
             $qrCode->setWriter(new SvgWriter());
         }
@@ -60,9 +64,8 @@ class QrCodeAction implements MiddlewareInterface
         return new QrCodeResponse($qrCode);
     }
 
-    private function getSizeParam(Request $request): int
+    private function normalizeSize(int $size): int
     {
-        $size = (int) $request->getAttribute('size', self::DEFAULT_SIZE);
         if ($size < self::MIN_SIZE) {
             return self::MIN_SIZE;
         }