diff --git a/uuid-file-renamer.php b/uuid-file-renamer.php
index 46e9a3f..6295b91 100644
--- a/uuid-file-renamer.php
+++ b/uuid-file-renamer.php
@@ -4,7 +4,7 @@
  * Plugin Name: UUID File Renamer
  * Description: Dieses Plugin benennt hochgeladene Dateien automatisch in eine UUID um und ermöglicht das Umbenennen bestehender Medien direkt in der Mediathek.
  * Plugin URI:  https://gitea.gnilebein.de/gnilebein/wordpres-uuid-file-renamer
- * Version: 1.4
+ * Version: 1.5
  * Author: Patrick Niebeling <patrick@niebel.ing>
  * Author URI:  https://gnilebein.de
  * Text Domain: uuid-file-renamer
@@ -34,6 +34,15 @@ function add_uuid_rename_button($form_fields, $post) {
     return $form_fields;
 }
 
+// Link in der Mediathek hinzufügen
+add_filter('media_row_actions', 'add_uuid_rename_link', 10, 2);
+function add_uuid_rename_link($actions, $post) {
+    if ($post->post_type === 'attachment') {
+        $actions['rename_to_uuid'] = '<a href="#" class="rename-to-uuid" data-id="' . $post->ID . '">' . __('In UUID umbenennen', 'uuid-file-renamer') . '</a>';
+    }
+    return $actions;
+}
+
 // AJAX-Handler für Einzel-Umbenennung
 add_action('wp_ajax_rename_media_to_uuid', 'rename_media_to_uuid_ajax');
 function rename_media_to_uuid_ajax() {
@@ -75,7 +84,7 @@ function rename_existing_media_to_uuid($attachment_id) {
     $file_info = pathinfo($file_path);
     $new_file_path = $file_info['dirname'] . '/' . $uuid . '.' . $file_info['extension'];
 
-    // Metadaten der Bilder abrufen
+    // Metadaten abrufen
     $metadata = wp_get_attachment_metadata($attachment_id);
     $upload_dir = wp_upload_dir();
 
@@ -87,13 +96,13 @@ function rename_existing_media_to_uuid($attachment_id) {
             'post_name' => $uuid
         ));
 
-        // Thumbnails umbenennen
+        // Thumbnails umbenennen, falls vorhanden
         if (!empty($metadata['sizes'])) {
             foreach ($metadata['sizes'] as $size => $data) {
                 $old_thumb_path = $upload_dir['basedir'] . '/' . dirname($metadata['file']) . '/' . $data['file'];
-                $thumb_info = pathinfo($old_thumb_path);
-                $new_thumb_path = $thumb_info['dirname'] . '/' . $uuid . '-' . $data['width'] . 'x' . $data['height'] . '.' . $thumb_info['extension'];
                 if (file_exists($old_thumb_path)) {
+                    $thumb_info = pathinfo($old_thumb_path);
+                    $new_thumb_path = $thumb_info['dirname'] . '/' . $uuid . '-' . $data['width'] . 'x' . $data['height'] . '.' . $thumb_info['extension'];
                     rename($old_thumb_path, $new_thumb_path);
                     $metadata['sizes'][$size]['file'] = basename($new_thumb_path);
                 }
@@ -103,12 +112,13 @@ function rename_existing_media_to_uuid($attachment_id) {
     }
 }
 
-// JS für Button hinzufügen
+// JS für Buttons hinzufügen
 add_action('admin_footer', 'uuid_renamer_js');
 function uuid_renamer_js() {
     echo '<script>
     jQuery(document).ready(function($) {
-        $(document).on("click", ".rename-to-uuid", function() {
+        $(document).on("click", ".rename-to-uuid", function(event) {
+            event.preventDefault();
             var button = $(this);
             var attachmentId = button.data("id");
             $.post(ajaxurl, { action: "rename_media_to_uuid", attachment_id: attachmentId }, function(response) {