diff --git a/backend/app/controllers/posts_controller.rb b/backend/app/controllers/posts_controller.rb
index f46c48c..bbbce70 100644
--- a/backend/app/controllers/posts_controller.rb
+++ b/backend/app/controllers/posts_controller.rb
@@ -19,8 +19,16 @@ class PostsController < ApplicationController
       posts = posts.first(limit)
     end
 
-    render json: { posts:       posts.as_json(include: { tags: { only: [:id, :name, :category, :post_count] } }),
-                   next_cursor: }
+    render json: { posts: posts.map { |post|
+      post.as_json(include: { tags: { only: [:id, :name, :category, :post_count] } }).tap { |json|
+        json['thumbnail'] =
+            if post.thumbnail.attached?
+              rails_storage_proxy_url(post.thumbnail, only_path: false)
+            else
+              nil
+            end
+      }
+    }, next_cursor: }
   end
 
   def random
diff --git a/frontend/public/.htaccess b/frontend/public/.htaccess
index 133a5f4..51ba3ad 100644
--- a/frontend/public/.htaccess
+++ b/frontend/public/.htaccess
@@ -1,3 +1,9 @@
+<IfModule mod_headers.c>
+  <FilesMatch "\.(css|js|jpg|png|webp|woff2?)$">
+    Header set Cache-Control "max-age=31536000, public"
+  </FilesMatch>
+</IfModule>
+
 <IfModule mod_rewrite.c>
   RewriteEngine On
   RewriteBase /
diff --git a/frontend/src/pages/posts/PostListPage.tsx b/frontend/src/pages/posts/PostListPage.tsx
index 626f18d..6d40409 100644
--- a/frontend/src/pages/posts/PostListPage.tsx
+++ b/frontend/src/pages/posts/PostListPage.tsx
@@ -101,6 +101,9 @@ export default () => {
 			  <img src={post.thumbnail || post.thumbnailBase || undefined}
 			       alt={post.title || post.url}
 			       title={post.title || post.url || undefined}
+			       loading="eager"
+			       fetchPriority="high"
+			       decoding="async"
 			       className="object-none w-full h-full" />
 			</Link>))}
 		  </div>)