diff --git a/nginx.conf b/nginx.conf
index cca4ab3..2492d54 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -8,12 +8,16 @@ server {
   gzip on;
   gzip_vary on;
   gzip_min_length 1024;
+  gzip_comp_level 6;
+  gzip_proxied any;
   gzip_types
     application/javascript
     application/json
+    application/rss+xml
     application/xml
     image/svg+xml
     text/css
+    text/javascript
     text/plain
     text/xml;
 
diff --git a/scripts/optimize-images.mjs b/scripts/optimize-images.mjs
index f2d053b..f6d8e0c 100644
--- a/scripts/optimize-images.mjs
+++ b/scripts/optimize-images.mjs
@@ -26,7 +26,7 @@ function formatBytes(bytes) {
 async function optimizeImage(inputPath, outputPath, options = {}) {
   const { width, quality = 80, outputExt = '.webp' } = options;
   const originalSize = await getFileSize(inputPath);
-  
+
   let pipeline = sharp(inputPath);
 
   if (width) {
@@ -40,19 +40,20 @@ async function optimizeImage(inputPath, outputPath, options = {}) {
   }
 
   const buffer = await pipeline.toBuffer();
-  
-  // For standard images, if webp is larger, we'll keep it if it's the specific target like bgImage
-  // but for general article images we might skip.
+  const optimizedSize = buffer.length;
+
+  // Threshold: webp must be at least 10% smaller than original
   const isTargeted = inputPath.includes(SOURCE_DIR);
-  if (!isTargeted && buffer.length >= originalSize && outputExt === '.webp') {
-    console.log(`Skipping ${path.basename(inputPath)}: Optimized size (${formatBytes(buffer.length)}) >= original (${formatBytes(originalSize)})`);
+  const reductionRatio = (originalSize - optimizedSize) / originalSize;
+
+  if (!isTargeted && reductionRatio < 0.1 && outputExt === '.webp') {
+    console.log(`Skipping ${path.basename(inputPath)}: Reduction ${ (reductionRatio * 100).toFixed(2) }% < 10% threshold`);
     return null;
   }
 
   await fs.mkdir(path.dirname(outputPath), { recursive: true });
   await fs.writeFile(outputPath, buffer);
-  const optimizedSize = buffer.length;
-  
+
   return {
     inputPath,
     outputPath,
@@ -60,7 +61,7 @@ async function optimizeImage(inputPath, outputPath, options = {}) {
     outputName: path.basename(outputPath),
     originalSize,
     optimizedSize,
-    reduction: ((originalSize - optimizedSize) / originalSize * 100).toFixed(2) + '%'
+    reduction: (reductionRatio * 100).toFixed(2) + '%'
   };
 }
 
@@ -89,7 +90,16 @@ async function main() {
     if (res) results.push(res);
   }
 
-  // 4. Optimize Article Images (In-place WebP generation)
+  // 4. Optimize Cover Images in Public Assets
+  const coverImages = await glob('src/.vuepress/public/assets/images/cover*.{jpg,jpeg,png}');
+  console.log(`Found ${coverImages.length} cover images to process...`);
+  for (const img of coverImages) {
+    const outputWebp = img.replace(path.extname(img), '.webp');
+    const res = await optimizeImage(img, outputWebp, { quality: 80 });
+    if (res) results.push(res);
+  }
+
+  // 5. Optimize Article Images (In-place WebP generation)
   const articleImages = await glob('src/**/*.{jpg,jpeg,png}', {
     ignore: ['src/.vuepress/dist/**', 'src/.vuepress/public/**']
   });
diff --git a/src/.vuepress/config.ts b/src/.vuepress/config.ts
index 9f17df5..f9472fe 100644
--- a/src/.vuepress/config.ts
+++ b/src/.vuepress/config.ts
@@ -14,6 +14,9 @@ export default defineUserConfig({
 
   head: [['link', { rel: 'icon', href: '/favicon.png' }]],
 
+  shouldPrefetch: false,
+  shouldPreload: false,
+
   theme,
   bundler: viteBundler({
     viteOptions: {
diff --git a/src/.vuepress/public/assets/images/cover3.webp b/src/.vuepress/public/assets/images/cover3.webp
new file mode 100644
index 0000000..26dcaf6
Binary files /dev/null and b/src/.vuepress/public/assets/images/cover3.webp differ
diff --git a/src/.vuepress/theme.ts b/src/.vuepress/theme.ts
index 4e1299e..556eee9 100644
--- a/src/.vuepress/theme.ts
+++ b/src/.vuepress/theme.ts
@@ -116,7 +116,14 @@ export default hopeTheme(
       blog: true,
 
       // 启用本地搜索
-      search: true,
+      search: {
+        isSearchable: (page) =>
+          !page.path.includes('/work/log/') &&
+          !page.path.includes('/demo/') &&
+          !page.path.includes('/accounts/') &&
+          !page.path.includes('SpringSecurity'),
+        maxSuggestions: 10,
+      },
 
       // 组件配置
       components: {
diff --git a/src/accounts/README.md b/src/accounts/README.md
index 5584126..52d7bed 100644
--- a/src/accounts/README.md
+++ b/src/accounts/README.md
@@ -1,7 +1,6 @@
 ---
 title: 账号密码管理
 index: false
-search: false
 navbar: false
 sidebar: false
 breadcrumb: false
diff --git a/src/intro.md b/src/intro.md
index cd72b21..548f753 100644
--- a/src/intro.md
+++ b/src/intro.md
@@ -1,6 +1,6 @@
 ---
 icon: circle-info
-cover: /assets/images/cover3.jpg
+cover: /assets/images/cover3.webp
 date: 2025-05-06
 ---