diff --git a/reader.api.php b/reader.api.php
index e55ec68..7fa6966 100644
--- a/reader.api.php
+++ b/reader.api.php
@@ -104,10 +104,20 @@ function hook_reader_do_post_action($action, $id, array $items) {
  *     - id: id of the channel
  *     - post_id: id of the post
  */
-function activitypub_reader_post_actions_alter(&$links, $context) {
+function hook_reader_post_actions_alter(&$links, $context) {
   $links[] = [
     'url' => Url::fromRoute('reader.post.action', ['module' => 'custom', 'action' => 'move', 'id' => $context['id,'], 'post_id' => $context['post_id']]),
     'title' => 'Move',
     'attributes' => ['class' => ['post-action']],
   ];
 }
+
+/**
+ * Alter the manifest.
+ *
+ * @param array $manifest
+ *   The current manifest.
+ */
+function hook_reader_manifest_alter(array &$manifest) {
+  $manifest['name'] = 'My awesome app';
+}
diff --git a/src/Controller/ReaderController.php b/src/Controller/ReaderController.php
index a274dd4..44869e3 100644
--- a/src/Controller/ReaderController.php
+++ b/src/Controller/ReaderController.php
@@ -89,15 +89,17 @@ class ReaderController extends ControllerBase {
     $url = Url::fromRoute('reader.home')->toString();
     $manifest = [];
     $manifest['name'] = 'Reader';
-    $manifest['scope'] = $url . '/';
+    $manifest['scope'] = $url;
     $manifest['start_url'] = $url;
     $manifest['display'] = $pwa_display;
     $manifest['icons'][] = (object) [
-      'src' => file_create_url(drupal_get_path('theme', 'reader_theme') . '/images/icon.png'),
+      'src' => \Drupal::service('file_url_generator')->generateAbsoluteString(drupal_get_path('theme', 'reader_theme') . '/images/icon.png'),
       'sizes' => '192x192',
       'type' => 'image/png',
     ];
 
+    \Drupal::moduleHandler()->alter('reader_manifest', $manifest);
+
     return new JsonResponse($manifest);
   }