diff --git a/footer.php b/footer.php
index 3dba767..65784b7 100644
--- a/footer.php
+++ b/footer.php
@@ -10,7 +10,11 @@
 				</p>
 			</footer>
 		</section>
-		<script src="<?php $this->options->themeUrl('highlight.js'); ?>"></script>
+<?php if (!empty($this->options->optimizeOptions) && in_array('EnableCdn', $this->options->optimizeOptions)) : ?>
+		<script src="https://cdn.jsdelivr.net/gh/ZoharWang/typecho-theme-Cactus@<?php echo CACTUS_VERSION; ?>/highlight.min.js"></script>
+<?php else : ?>
+		<script src="<?php $this->options->themeUrl('highlight.js'); ?>?v=<?php echo CACTUS_VERSION; ?>"></script>
+<?php endif; ?>
 		<script>hljs.initHighlightingOnLoad();</script>
 		<?php $this->footer(); ?>
 		<?php $this->options->footer(); ?>
diff --git a/functions.php b/functions.php
index 43128df..998211b 100644
--- a/functions.php
+++ b/functions.php
@@ -1,6 +1,8 @@
 <?php
 if (!defined('__TYPECHO_ROOT_DIR__')) exit;
 
+define('CACTUS_VERSION', '1.0.3');
+
 function themeConfig($form) {
 	$avatarUrl = new Typecho_Widget_Helper_Form_Element_Text('avatarUrl', NULL, NULL, _t('头像 URL 地址'), _t('在这里填入一个图片 URL 地址, 留空则返回 Gravatar, 不建议留空.'));
 	$form->addInput($avatarUrl);
@@ -11,6 +13,13 @@ function themeConfig($form) {
 	$icpNumber = new Typecho_Widget_Helper_Form_Element_Text('icpNumber', NULL, NULL, _t('ICP 备案许可证号'), _t('在这里填入一个 ICP 备案许可证号, 留空则不显示.'));
 	$form->addInput($icpNumber);
 
+	$optimizeOptions = new Typecho_Widget_Helper_Form_Element_Checkbox('optimizeOptions', array(
+		'EnableCdn' => _t('使用 CDN 加速本主题内的 CSS & JS 文件')
+	), array(
+		'EnableCdn'
+	), _t('优化选项'));
+	$form->addInput($optimizeOptions->multiMode());
+
 	$header = new Typecho_Widget_Helper_Form_Element_Textarea('header', NULL, NULL, _t('自定义 Header'), _t('在这里填入自定义 Header, 如自定义 CSS 样式等.'));
 	$form->addInput($header);
 
diff --git a/header.php b/header.php
index 1a92c05..aedcc95 100644
--- a/header.php
+++ b/header.php
@@ -15,8 +15,13 @@
 <?php if ($this->options->themeColor) : ?>
 		<meta name="theme-color" content="<?php $this->options->themeColor(); ?>" />
 <?php endif; ?>
-		<link rel="stylesheet" href="<?php $this->options->themeUrl('style.css'); ?>">
-		<link rel="stylesheet" href="<?php $this->options->themeUrl('highlight.css'); ?>">
+<?php if (!empty($this->options->optimizeOptions) && in_array('EnableCdn', $this->options->optimizeOptions)) : ?>
+		<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/ZoharWang/typecho-theme-Cactus@<?php echo CACTUS_VERSION; ?>/style.min.css">
+		<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/ZoharWang/typecho-theme-Cactus@<?php echo CACTUS_VERSION; ?>/highlight.min.css">
+<?php else : ?>
+		<link rel="stylesheet" href="<?php $this->options->themeUrl('style.css'); ?>?v=<?php echo CACTUS_VERSION; ?>">
+		<link rel="stylesheet" href="<?php $this->options->themeUrl('highlight.css'); ?>?v=<?php echo CACTUS_VERSION; ?>">
+<?php endif; ?>
 		<?php $this->header(); ?>
 		<?php $this->options->header(); ?>