diff --git a/backend/app/admin.py b/backend/app/admin.py
index 98cc39d..68cf6d3 100644
--- a/backend/app/admin.py
+++ b/backend/app/admin.py
@@ -69,3 +69,4 @@ class PlaceAdmin(admin.ModelAdmin):
     list_display = ['title', 'category', 'sort', 'created']
     search_fields = ['title']
     list_filter = ['category']
+    change_list_template = 'admin/place_tools.html'
diff --git a/backend/app/models/place.py b/backend/app/models/place.py
index 3726a97..7c23525 100644
--- a/backend/app/models/place.py
+++ b/backend/app/models/place.py
@@ -81,16 +81,17 @@ class Place(models.Model):
         return rv
 
     def update_cover_image(self):
-        path = self.fixed_os_path('cov.jpg')
         if self.image:
             img = Image.open(self.image.path)
             thumb = ImageOps.fit(img, (600, 400))
             # img.thumbnail((600, 400))
-            path.parent.mkdir(parents=True, exist_ok=True)
+            path = self.image.path.replace('img.jpg', 'cov.jpg')
+            # path.parent.mkdir(parents=True, exist_ok=True)
             thumb.save(path, 'jpeg')
-        else:
-            if path.exists():
-                os.remove(path)
+        # else:
+        #     path = self.fixed_os_path('cov.jpg')
+        #     if path.exists():
+        #         os.remove(path)
 
     @staticmethod
     def update_json():
@@ -115,6 +116,11 @@ class Place(models.Model):
             })
         return rv
 
+    @staticmethod
+    def recreateThumbnails() -> None:
+        for x in Place.objects.all():
+            x.update_cover_image()
+
 
 @receiver(post_delete, sender=Place)
 def on_delete_Place(sender, instance: 'Place', using, **kwargs):
diff --git a/backend/app/urls.py b/backend/app/urls.py
new file mode 100644
index 0000000..cc28291
--- /dev/null
+++ b/backend/app/urls.py
@@ -0,0 +1,23 @@
+from django.http import HttpRequest, JsonResponse
+from django.urls import path
+
+from app.models.place import Place
+
+
+def run_tool(request: HttpRequest):
+    if request.method != 'POST':
+        return JsonResponse({'error': 'unsupported method type'})
+
+    action = request.POST.get('action')
+
+    if action == 'generate-thumbnails':
+        Place.recreateThumbnails()
+    else:
+        return JsonResponse({'error': 'unknown action'})
+
+    return JsonResponse({'success': 'ok'})
+
+
+urlpatterns = [
+    path('tool/', run_tool, name='exec-tool'),
+]
diff --git a/backend/config/settings.py b/backend/config/settings.py
index 8c66288..b40343b 100644
--- a/backend/config/settings.py
+++ b/backend/config/settings.py
@@ -68,7 +68,7 @@ ROOT_URLCONF = 'config.urls'
 TEMPLATES = [
     {
         'BACKEND': 'django.template.backends.django.DjangoTemplates',
-        'DIRS': [],  # BASE_DIR / 'templates'
+        'DIRS': [BASE_DIR / 'templates'],  # BASE_DIR / 'templates'
         'APP_DIRS': True,
         'OPTIONS': {
             'context_processors': [
diff --git a/backend/config/urls.py b/backend/config/urls.py
index 285dab3..ce5b180 100644
--- a/backend/config/urls.py
+++ b/backend/config/urls.py
@@ -23,4 +23,5 @@ from django.urls import include, path
 urlpatterns = [
     path(settings.ADMIN_URL, admin.site.urls),
     path('', include('common.urls')),
+    path('app/', include('app.urls')),
 ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
diff --git a/backend/templates/admin/place_tools.html b/backend/templates/admin/place_tools.html
new file mode 100644
index 0000000..0f40489
--- /dev/null
+++ b/backend/templates/admin/place_tools.html
@@ -0,0 +1,14 @@
+{% extends "admin/change_list.html" %}
+
+{% block object-tools-items %}
+{{ block.super }}
+<li>
+  <form action="{% url 'exec-tool' %}" method="post" autocomplete="off">
+    {% csrf_token %}
+    <select name="action" onchange="this.form.submit()" style="width:3em">
+      <option value="">...</option>
+      <option value="generate-thumbnails">Rebuild Thumbnails</option>
+    </select>
+  </form>
+</li>
+{% endblock %}