diff --git a/web/.htaccess b/web/.htaccess
index dd28dbc..86946dd 100644
--- a/web/.htaccess
+++ b/web/.htaccess
@@ -16,6 +16,20 @@ DirectorySlash Off
 
 DirectoryIndex
 
+<filesMatch "\.(ico|gif|jpg|png)$">
+  ExpiresActive On
+  ExpiresDefault "access plus 6 month"
+  Header append Cache-Control "public"
+</filesMatch>
+
+<filesMatch "\.(css|js)$">
+  ExpiresActive On
+  ExpiresDefault "access plus 1 week"
+  Header append Cache-Control "public"
+</filesMatch>
+
+RequestHeader append X-Author "Baoshuo ( https://baoshuo.ren )"
+
 RewriteEngine On
 
 RewriteCond %{QUERY_STRING} ^$
diff --git a/web/app/controllers/app/image_hosting/get_image.php b/web/app/controllers/app/image_hosting/get_image.php
deleted file mode 100644
index 589663c..0000000
--- a/web/app/controllers/app/image_hosting/get_image.php
+++ /dev/null
@@ -1,23 +0,0 @@
-<?php
-
-if (!Auth::check()) {
-	become403Page(UOJLocale::get('need login'));
-}
-
-$name = $_GET['image_name'];
-if (!validateString($name)) {
-	become404Page();
-}
-
-$file_name = UOJContext::storagePath() . "/image_hosting/$name.png";
-
-$finfo = finfo_open(FILEINFO_MIME);
-$mimetype = finfo_file($finfo, $file_name);
-if ($mimetype === false) {
-	become404Page();
-}
-finfo_close($finfo);
-
-header("X-Sendfile: $file_name");
-header("Content-type: $mimetype");
-header("Cache-Control: max-age=604800", true);
diff --git a/web/app/controllers/app/html2markdown.php b/web/app/controllers/apps/html2markdown.php
similarity index 100%
rename from web/app/controllers/app/html2markdown.php
rename to web/app/controllers/apps/html2markdown.php
diff --git a/web/app/controllers/app/image_hosting/index.php b/web/app/controllers/apps/image_hosting.php
similarity index 98%
rename from web/app/controllers/app/image_hosting/index.php
rename to web/app/controllers/apps/image_hosting.php
index 8ab030b..2197fdc 100644
--- a/web/app/controllers/app/image_hosting/index.php
+++ b/web/app/controllers/apps/image_hosting.php
@@ -412,7 +412,7 @@ $pag = new Paginator($pag_config);
 	<?php foreach ($pag->get() as $idx => $row) : ?>
 		<div class="col">
 			<div class="card">
-				<img src="<?= $row['path'] ?>" class="card-img-top" height="200" style="object-fit: contain">
+				<img src="<?= $row['path'] ?>" class="card-img-top" height="200" style="object-fit: contain" loading="lazy" decoding="async">
 				<div class="card-footer bg-transparent small px-2">
 					<div class="d-flex flex-wrap justify-content-between">
 						<time><?= $row['upload_time'] ?></time>
@@ -470,10 +470,6 @@ $pag = new Paginator($pag_config);
 </div>
 
 <script>
-	$(document).ready(function() {
-		[...document.querySelectorAll('[data-bs-toggle="tooltip"]')].map(tooltipTriggerEl => new bootstrap.Tooltip(tooltipTriggerEl));
-	});
-
 	var copy_url_toast = new bootstrap.Toast('#copy-url-toast', {
 		delay: 2000
 	});
diff --git a/web/app/controllers/problem_statement_manage.php b/web/app/controllers/problem_statement_manage.php
index a45a33d..a97ac67 100644
--- a/web/app/controllers/problem_statement_manage.php
+++ b/web/app/controllers/problem_statement_manage.php
@@ -324,8 +324,8 @@ $solution_view_type_form->runAtServer();
 				<h2 class="h3 card-title">提示</h2>
 				<ol>
 					<li>请勿引用不稳定的外部资源（如来自个人服务器的图片或文档等），以便备份及后期维护；</li>
-					<li>请勿在题面中直接插入大段 HTML 代码，这可能会破坏页面的显示，可以考虑使用 <a class="text-decoration-none" href="/html2markdown" target="_blank">转换工具</a> 转换后再作修正；</li>
-					<li>图片上传推荐使用 <a class="text-decoration-none" href="/image_hosting" target="_blank">S2OJ 图床</a>，以免后续产生外链图片大量失效的情况。</li>
+					<li>请勿在题面中直接插入大段 HTML 代码，这可能会破坏页面的显示，可以考虑使用 <a class="text-decoration-none" href="/apps/html2markdown" target="_blank">转换工具</a> 转换后再作修正；</li>
+					<li>图片上传推荐使用 <a class="text-decoration-none" href="/apps/image_hosting" target="_blank">S2OJ 图床</a>，以免后续产生外链图片大量失效的情况。</li>
 				</ol>
 				<p class="card-text">
 					更多内容请查看 S2OJ 用户手册中的「<a class="text-decoration-none" href="https://s2oj.github.io/#/manage/problem?id=%e4%bc%a0%e9%a2%98%e6%8c%87%e5%bc%95">传题指引</a>」部分。
diff --git a/web/app/controllers/subdomain/blog/blog_write.php b/web/app/controllers/subdomain/blog/blog_write.php
index 13444d8..ca72c40 100644
--- a/web/app/controllers/subdomain/blog/blog_write.php
+++ b/web/app/controllers/subdomain/blog/blog_write.php
@@ -107,8 +107,8 @@ $blog_editor->runAtServer();
 		<ol>
 			<li>题解发布后还需要返回对应题目的题解页面 <b>手动输入博客 ID</b> 来将本文添加到题目的题解列表中（博客 ID 可以在右上角找到）；</li>
 			<li>请勿引用不稳定的外部资源（如来自个人服务器的图片或文档等），以便备份及后期维护；</li>
-			<li>请勿在博文中直接插入大段 HTML 代码，这可能会破坏页面的显示，可以考虑使用 <a class="text-decoration-none" href="/html2markdown" target="_blank">转换工具</a> 转换后再作修正；</li>
-			<li>图片上传推荐使用 <a class="text-decoration-none" href="/image_hosting" target="_blank">S2OJ 图床</a>，以免后续产生外链图片大量失效的情况。</li>
+			<li>请勿在博文中直接插入大段 HTML 代码，这可能会破坏页面的显示，可以考虑使用 <a class="text-decoration-none" href="/apps/html2markdown" target="_blank">转换工具</a> 转换后再作修正；</li>
+			<li>图片上传推荐使用 <a class="text-decoration-none" href="/apps/image_hosting" target="_blank">S2OJ 图床</a>，以免后续产生外链图片大量失效的情况。</li>
 		</ol>
 		<p class="card-text">
 			帮助：<a class="text-decoration-none" href="http://uoj.ac/blog/7">UOJ 博客使用教程</a>。
diff --git a/web/app/route.php b/web/app/route.php
index 7906c5a..192d65d 100644
--- a/web/app/route.php
+++ b/web/app/route.php
@@ -91,9 +91,8 @@ Route::group(
 		Route::any('/click-zan', '/click_zan.php');
 
 		// Apps
-		Route::any('/image_hosting', '/app/image_hosting/index.php');
-		Route::get('/image_hosting/{image_name}.png', '/app/image_hosting/get_image.php');
-		Route::any('/html2markdown', '/app/html2markdown.php');
+		Route::any('/apps/image_hosting', '/apps/image_hosting.php');
+		Route::any('/apps/html2markdown', '/apps/html2markdown.php');
 	}
 );
 
diff --git a/web/app/views/main-nav.php b/web/app/views/main-nav.php
index 0f74abf..8ad6074 100644
--- a/web/app/views/main-nav.php
+++ b/web/app/views/main-nav.php
@@ -111,13 +111,13 @@ mb-4" role="navigation">
 						</a>
 						<ul class="dropdown-menu">
 							<li>
-								<a class="dropdown-item" href="<?= HTML::url('/image_hosting') ?>">
+								<a class="dropdown-item" href="<?= HTML::url('/apps/image_hosting') ?>">
 									<i class="bi bi-images"></i>
 									<?= UOJLocale::get('image hosting') ?>
 								</a>
 							</li>
 							<li>
-								<a class="dropdown-item" href="<?= HTML::url('/html2markdown') ?>">
+								<a class="dropdown-item" href="<?= HTML::url('/apps/html2markdown') ?>">
 									<i class="bi bi-markdown"></i>
 									<?= UOJLocale::get('html to markdown') ?>
 								</a>
diff --git a/web/app/views/page-header.php b/web/app/views/page-header.php
index 344999e..7b0db54 100644
--- a/web/app/views/page-header.php
+++ b/web/app/views/page-header.php
@@ -44,7 +44,7 @@ if (!isset($ShowPageHeader)) {
 	<title><?= isset($PageTitle) ? $PageTitle : UOJConfig::$data['profile']['oj-name-short'] ?> - <?= $PageMainTitle ?></title>
 
 	<script type="text/javascript">
-		uojHome = ''; // '<?= HTML::url('/') ?>'
+		uojHome = ''; // '<?= HTML::url('/') ?>';
 	</script>
 
 	<?php if (isset($REQUIRE_LIB['bootstrap5'])) : ?>
@@ -270,7 +270,7 @@ if (!isset($ShowPageHeader)) {
 		});
 	</script>
 
-	<script defer data-domain="sjzezoj.com" src="https://stat.u.sb/js/script.js"></script>
+	<script async data-domain="sjzezoj.com" src="https://stat.u.sb/js/script.js"></script>
 </head>
 
 <?php if (isset($REQUIRE_LIB['bootstrap5'])) : ?>
diff --git a/web/image_hosting b/web/image_hosting
new file mode 120000
index 0000000..3a54a36
--- /dev/null
+++ b/web/image_hosting
@@ -0,0 +1 @@
+app/storage/image_hosting
\ No newline at end of file
diff --git a/web/install.sh b/web/install.sh
index cc5b553..c913d0a 100644
--- a/web/install.sh
+++ b/web/install.sh
@@ -49,7 +49,7 @@ setLAMPConf(){
 UOJEOF
     #Enable modules and make UOJ site conf enabled
     a2ensite 000-uoj.conf && a2dissite 000-default.conf
-    a2enmod rewrite headers && sed -i -e '172s/AllowOverride None/AllowOverride All/' /etc/apache2/apache2.conf
+    a2enmod rewrite headers expires && sed -i -e '172s/AllowOverride None/AllowOverride All/' /etc/apache2/apache2.conf
     #Create UOJ session save dir and make PHP extensions available
     mkdir --mode=733 /var/lib/php/uoj_sessions && chmod +t /var/lib/php/uoj_sessions
 	sed -i 's|;sys_temp_dir = "/tmp"|sys_temp_dir = "/tmp"|g' /etc/php/7.4/apache2/php.ini