0.0.19

- Added DNS prefetch and preconnect links in index.html for improved API loading times.
- Implemented lazy loading for tool components to optimize performance and reduce initial load time.
- Wrapped tool components in Suspense with a loading fallback to enhance user experience during loading.
- Refactored Vite configuration to create manual chunks for better code splitting of React and UI libraries.

.gitea/workflows/build.yaml

@@ -43,8 +43,8 @@ jobs:
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=registry,ref=${{ secrets.REGISTRY_ENDPOINT }}/${{ github.repository_owner }}/litek:buildcache
+          # cache-from: type=registry,ref=${{ secrets.REGISTRY_ENDPOINT }}/${{ github.repository_owner }}/litek:buildcache
-          cache-to: type=registry,ref=${{ secrets.REGISTRY_ENDPOINT }}/${{ github.repository_owner }}/litek:buildcache,mode=max
+          # cache-to: type=registry,ref=${{ secrets.REGISTRY_ENDPOINT }}/${{ github.repository_owner }}/litek:buildcache,mode=max
           # platforms: linux/amd64,linux/arm64
           platforms: linux/amd64
       

SEO-README.md

@@ -0,0 +1,171 @@
+# SEO 优化说明
+
+本项目已完成基础 SEO 优化，以下是已实施的改动。
+
+## 已完成的优化项
+
+### 1. HTML Meta 标签优化 ✅
+
+在 `index.html` 中添加了完整的 SEO 元数据：
+
+- **基础 Meta 标签**
+  - title, description, keywords
+  - author, theme-color
+  - canonical URL
+  
+- **Open Graph 标签**（社交媒体分享优化）
+  - og:type, og:url, og:title
+  - og:description, og:image, og:site_name
+  
+- **Twitter Card 标签**
+  - twitter:card, twitter:title
+  - twitter:description, twitter:image
+
+- **结构化数据**（JSON-LD）
+  - Schema.org WebSite 类型标记
+  - 提升搜索引擎理解能力
+
+### 2. SEO 配置文件 ✅
+
+- **`public/robots.txt`** - 搜索引擎爬虫规则
+  - 允许所有爬虫访问
+  - 指定 sitemap 位置
+  
+- **`public/sitemap.xml`** - 站点地图（自动生成）
+  - 包含所有工具页面 URL
+  - 设置更新频率和优先级
+  - 通过 `scripts/generate-sitemap.ts` 自动生成
+  
+- **`public/manifest.json`** - PWA 配置
+  - 支持渐进式 Web 应用
+  - 改善移动端体验
+
+### 3. 构建流程优化 ✅
+
+- **`package.json`**
+  - 构建时自动生成 sitemap
+  - 添加 tsx 依赖用于运行生成脚本
+
+## 文件清单
+
+### 新增文件
+```
+public/
+├── robots.txt              # 爬虫规则
+├── sitemap.xml            # 站点地图（自动生成）
+└── manifest.json          # PWA 配置
+
+scripts/
+└── generate-sitemap.ts    # Sitemap 生成脚本
+```
+
+### 修改文件
+```
+index.html                 # 添加 SEO meta 标签和结构化数据
+package.json               # 添加 sitemap 生成命令
+```
+
+## 使用说明
+
+### 开发
+```bash
+pnpm install               # 安装依赖
+pnpm dev                   # 启动开发服务器
+```
+
+### 构建
+```bash
+pnpm run build             # 构建项目（自动生成 sitemap）
+pnpm run generate:sitemap  # 单独生成 sitemap
+```
+
+### 部署前检查
+
+⚠️ **重要：部署前必须更新配置文件中的域名！**
+
+需要将以下文件中的 `https://litek.typist.cc` 替换为你的实际域名：
+
+1. **`index.html`**
+   - canonical URL
+   - Open Graph URL 和 image
+   - Twitter Card image
+   - Structured Data URL
+
+2. **`public/robots.txt`**
+   - Sitemap URL
+
+3. **`scripts/generate-sitemap.ts`**
+   - BASE_URL 常量
+
+更新后重新构建：
+```bash
+pnpm run build
+```
+
+## SEO 验证
+
+### 部署后验证
+
+1. **提交 sitemap 到 Google Search Console**
+   - 访问 https://search.google.com/search-console
+   - 添加网站资源
+   - 提交 sitemap: `https://你的域名/sitemap.xml`
+
+2. **测试结构化数据**
+   - 访问 https://validator.schema.org/
+   - 输入网站 URL
+   - 检查是否有错误
+
+3. **测试 Open Graph 预览**
+   - Facebook: https://developers.facebook.com/tools/debug/
+   - Twitter: https://cards-dev.twitter.com/validator
+
+4. **性能测试**
+   - Google PageSpeed Insights: https://pagespeed.web.dev/
+   - 目标分数: SEO > 95
+
+## 可访问的 URL
+
+部署后，以下 URL 应该可以正常访问：
+
+- `https://你的域名/` - 主页
+- `https://你的域名/robots.txt` - 爬虫规则
+- `https://你的域名/sitemap.xml` - 站点地图
+- `https://你的域名/manifest.json` - PWA 配置
+- `https://你的域名/tool/uuid` - UUID 工具
+- `https://你的域名/tool/json` - JSON 工具
+- `https://你的域名/tool/base64` - Base64 工具
+- `https://你的域名/tool/network/dns` - DNS 工具
+- ... 其他工具页面
+
+## 添加新工具时更新 SEO
+
+当添加新工具时，需要更新 `scripts/generate-sitemap.ts`：
+
+```typescript
+const tools = [
+  // 现有工具...
+  { path: '/tool/你的新工具', priority: '0.9' },
+];
+```
+
+然后重新构建项目。
+
+## SEO 效果预期
+
+- **1-2 周**：搜索引擎开始索引页面
+- **1-2 月**：主要关键词开始有排名
+- **3-6 月**：稳定的搜索排名和自然流量增长
+
+## 技术栈
+
+- React 19 + TypeScript
+- Vite (Rolldown)
+- React Router v7
+- Radix UI + Tailwind CSS 4
+- Nginx
+
+## 联系方式
+
+需要更多工具或有建议？联系：litek@mail.typist.cc
+

index.html

@@ -2,9 +2,59 @@
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/lite.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Lite Kit</title>
+    
+    <!-- Primary Meta Tags -->
+    <title>Lite Kit - Lightweight Online Tools</title>
+    <meta name="description" content="Free online tools including UUID generator, JSON formatter, Base64 encoder/decoder, network testing tools and more. Fast, secure, and easy to use." />
+    <meta name="keywords" content="online tools,UUID generator,JSON formatter,Base64 encoder,network tools,DNS lookup,Ping test,TCPing,speed test,IP query" />
+    <meta name="author" content="Lite Kit" />
+    <meta name="theme-color" content="#000000" />
+    
+    <!-- Favicon -->
+    <link rel="icon" type="image/svg+xml" href="/lite.svg" />
+    
+    <!-- DNS Prefetch & Preconnect for external APIs -->
+    <link rel="dns-prefetch" href="https://ipinfo.io">
+    <link rel="preconnect" href="https://ipinfo.io" crossorigin>
+    
+    <!-- Open Graph / Facebook -->
+    <meta property="og:type" content="website" />
+    <meta property="og:url" content="https://litek.typist.cc/" />
+    <meta property="og:title" content="Lite Kit - Lightweight Online Tools" />
+    <meta property="og:description" content="Free online tools including UUID generator, JSON formatter, Base64 encoder/decoder, network testing tools and more." />
+    <meta property="og:image" content="https://litek.typist.cc/lite.svg" />
+    <meta property="og:site_name" content="Lite Kit" />
+    
+    <!-- Twitter Card -->
+    <meta name="twitter:card" content="summary_large_image" />
+    <meta name="twitter:title" content="Lite Kit - Lightweight Online Tools" />
+    <meta name="twitter:description" content="Free online tools including UUID generator, JSON formatter, Base64 encoder/decoder, network testing tools and more." />
+    <meta name="twitter:image" content="https://litek.typist.cc/lite.svg" />
+    
+    <!-- PWA Manifest -->
+    <link rel="manifest" href="/manifest.json" />
+    
+    <!-- Structured Data (JSON-LD) -->
+    <script type="application/ld+json">
+    {
+      "@context": "https://schema.org",
+      "@type": "WebSite",
+      "name": "Lite Kit",
+      "description": "Free online tools including UUID generator, JSON formatter, Base64 encoder/decoder, network testing tools and more",
+      "url": "https://litek.typist.cc/",
+      "author": {
+        "@type": "Organization",
+        "name": "Lite Kit"
+      },
+      "applicationCategory": "UtilitiesApplication",
+      "offers": {
+        "@type": "Offer",
+        "price": "0",
+        "priceCurrency": "USD"
+      }
+    }
+    </script>
   </head>
   <body>
     <div id="root"></div>

package.json

@@ -1,11 +1,12 @@
 {
   "name": "litek",
   "private": true,
-  "version": "0.0.12",
+  "version": "0.0.19",
   "type": "module",
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
+    "generate:sitemap": "tsx scripts/generate-sitemap.ts",
     "lint": "eslint .",
     "preview": "vite preview",
     "release:patch": "npm version patch && git push --follow-tags",
@@ -43,6 +44,7 @@
     "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-refresh": "^0.4.22",
     "globals": "^16.4.0",
+    "tsx": "^4.19.2",
     "tw-animate-css": "^1.4.0",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.45.0",
@@ -53,7 +55,8 @@
       "vite": "npm:rolldown-vite@7.1.14"
     },
     "onlyBuiltDependencies": [
-      "@swc/core"
+      "@swc/core",
+      "esbuild"
     ]
   }
 }

pnpm-lock.yaml

@@ -31,7 +31,7 @@ importers:
         version: 1.2.8(@types/react-dom@19.2.2(@types/react@19.2.2))(@types/react@19.2.2)(react-dom@19.2.0(react@19.2.0))(react@19.2.0)
       '@tailwindcss/vite':
         specifier: ^4.1.16
-        version: 4.1.16(rolldown-vite@7.1.14(@types/node@24.9.1)(jiti@2.6.1))
+        version: 4.1.16(rolldown-vite@7.1.14(@types/node@24.9.1)(esbuild@0.25.11)(jiti@2.6.1)(tsx@4.20.6))
       class-variance-authority:
         specifier: ^0.7.1
         version: 0.7.1
@@ -83,7 +83,7 @@ importers:
         version: 19.2.2(@types/react@19.2.2)
       '@vitejs/plugin-react':
         specifier: ^5.1.0
-        version: 5.1.0(rolldown-vite@7.1.14(@types/node@24.9.1)(jiti@2.6.1))
+        version: 5.1.0(rolldown-vite@7.1.14(@types/node@24.9.1)(esbuild@0.25.11)(jiti@2.6.1)(tsx@4.20.6))
       eslint:
         specifier: ^9.36.0
         version: 9.38.0(jiti@2.6.1)
@@ -96,6 +96,9 @@ importers:
       globals:
         specifier: ^16.4.0
         version: 16.4.0
+      tsx:
+        specifier: ^4.19.2
+        version: 4.20.6
       tw-animate-css:
         specifier: ^1.4.0
         version: 1.4.0
@@ -107,7 +110,7 @@ importers:
         version: 8.46.2(eslint@9.38.0(jiti@2.6.1))(typescript@5.9.3)
       vite:
         specifier: npm:rolldown-vite@7.1.14
-        version: rolldown-vite@7.1.14(@types/node@24.9.1)(jiti@2.6.1)
+        version: rolldown-vite@7.1.14(@types/node@24.9.1)(esbuild@0.25.11)(jiti@2.6.1)(tsx@4.20.6)
 
 packages:
 
@@ -203,6 +206,162 @@ packages:
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+    os: [aix]
+
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+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [android]
+
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+    engines: {node: '>=18'}
+    cpu: [arm]
+    os: [android]
+
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+    engines: {node: '>=18'}
+    cpu: [x64]
+    os: [android]
+
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+    cpu: [arm64]
+    os: [darwin]
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+    os: [win32]
+
   '@eslint-community/eslint-utils@4.9.0':
     resolution: {integrity: sha512-ayVFHdtZ+hsq1t2Dy24wCmGXGe4q9Gu3smhLYALJrr473ZH27MsnSL+LKUlimp4BWJqMDMLmPpx/Q9R3OAlL4g==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
@@ -1035,6 +1194,11 @@ packages:
     resolution: {integrity: sha512-d4lC8xfavMeBjzGr2vECC3fsGXziXZQyJxD868h2M/mBI3PwAuODxAkLkq5HYuvrPYcUtiLzsTo8U3PgX3Ocww==}
     engines: {node: '>=10.13.0'}
 
+  esbuild@0.25.11:
+    resolution: {integrity: sha512-KohQwyzrKTQmhXDW1PjCv3Tyspn9n5GcY2RTDqeORIdIJY8yKIF7sTSopFmn/wpMPW4rdPXI0UE5LJLuq3bx0Q==}
+    engines: {node: '>=18'}
+    hasBin: true
+
   escalade@3.2.0:
     resolution: {integrity: sha512-WUj2qlxaQtO4g6Pq5c29GTcWGDyd8itL8zTlipgECz3JesAiiOKotd8JU6otB3PACgG6xkJUyVhboMS+bje/jA==}
     engines: {node: '>=6'}
@@ -1153,6 +1317,9 @@ packages:
     resolution: {integrity: sha512-FJhYRoDaiatfEkUK8HKlicmu/3SGFD51q3itKDGoSTysQJBnfOcxU5GxnhE1E6soB76MbT0MBtnKJuXyAx+96Q==}
     engines: {node: '>=6'}
 
+  get-tsconfig@4.13.0:
+    resolution: {integrity: sha512-1VKTZJCwBrvbd+Wn3AOgQP/2Av+TfTCOlE4AcRJE72W1ksZXbAx8PPBR9RzgTeSPzlPMHrbANMH3LbltH73wxQ==}
+
   glob-parent@5.1.2:
     resolution: {integrity: sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==}
     engines: {node: '>= 6'}
@@ -1489,6 +1656,9 @@ packages:
     resolution: {integrity: sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g==}
     engines: {node: '>=4'}
 
+  resolve-pkg-maps@1.0.0:
+    resolution: {integrity: sha512-seS2Tj26TBVOC2NIc2rOe2y2ZO7efxITtLZcGSOnHHNOQ7CkiUBfw0Iw2ck6xkIhPwLhKNLS8BO+hEpngQlqzw==}
+
   reusify@1.1.0:
     resolution: {integrity: sha512-g6QUff04oZpHs0eG5p83rFLhHeV00ug/Yf9nZM6fLeUrPguBTkTQOdpAWWspMh55TZfVQDPaN3NQJfbVRAxdIw==}
     engines: {iojs: '>=1.0.0', node: '>=0.10.0'}
@@ -1609,6 +1779,11 @@ packages:
   tslib@2.8.1:
     resolution: {integrity: sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==}
 
+  tsx@4.20.6:
+    resolution: {integrity: sha512-ytQKuwgmrrkDTFP4LjR0ToE2nqgy886GpvRSpU0JAnrdBYppuY5rLkRUYPU1yCryb24SsKBTL/hlDQAEFVwtZg==}
+    engines: {node: '>=18.0.0'}
+    hasBin: true
+
   tw-animate-css@1.4.0:
     resolution: {integrity: sha512-7bziOlRqH0hJx80h/3mbicLW7o8qLsH5+RaLR2t+OHM3D0JlWGODQKQ4cxbK7WlvmUxpcj6Kgu6EKqjrGFe3QQ==}
 
@@ -1810,6 +1985,84 @@ snapshots:
       tslib: 2.8.1
     optional: true
 
+  '@esbuild/aix-ppc64@0.25.11':
+    optional: true
+
+  '@esbuild/android-arm64@0.25.11':
+    optional: true
+
+  '@esbuild/android-arm@0.25.11':
+    optional: true
+
+  '@esbuild/android-x64@0.25.11':
+    optional: true
+
+  '@esbuild/darwin-arm64@0.25.11':
+    optional: true
+
+  '@esbuild/darwin-x64@0.25.11':
+    optional: true
+
+  '@esbuild/freebsd-arm64@0.25.11':
+    optional: true
+
+  '@esbuild/freebsd-x64@0.25.11':
+    optional: true
+
+  '@esbuild/linux-arm64@0.25.11':
+    optional: true
+
+  '@esbuild/linux-arm@0.25.11':
+    optional: true
+
+  '@esbuild/linux-ia32@0.25.11':
+    optional: true
+
+  '@esbuild/linux-loong64@0.25.11':
+    optional: true
+
+  '@esbuild/linux-mips64el@0.25.11':
+    optional: true
+
+  '@esbuild/linux-ppc64@0.25.11':
+    optional: true
+
+  '@esbuild/linux-riscv64@0.25.11':
+    optional: true
+
+  '@esbuild/linux-s390x@0.25.11':
+    optional: true
+
+  '@esbuild/linux-x64@0.25.11':
+    optional: true
+
+  '@esbuild/netbsd-arm64@0.25.11':
+    optional: true
+
+  '@esbuild/netbsd-x64@0.25.11':
+    optional: true
+
+  '@esbuild/openbsd-arm64@0.25.11':
+    optional: true
+
+  '@esbuild/openbsd-x64@0.25.11':
+    optional: true
+
+  '@esbuild/openharmony-arm64@0.25.11':
+    optional: true
+
+  '@esbuild/sunos-x64@0.25.11':
+    optional: true
+
+  '@esbuild/win32-arm64@0.25.11':
+    optional: true
+
+  '@esbuild/win32-ia32@0.25.11':
+    optional: true
+
+  '@esbuild/win32-x64@0.25.11':
+    optional: true
+
   '@eslint-community/eslint-utils@4.9.0(eslint@9.38.0(jiti@2.6.1))':
     dependencies:
       eslint: 9.38.0(jiti@2.6.1)
@@ -2351,12 +2604,12 @@ snapshots:
       '@tailwindcss/oxide-win32-arm64-msvc': 4.1.16
       '@tailwindcss/oxide-win32-x64-msvc': 4.1.16
 
-  '@tailwindcss/vite@4.1.16(rolldown-vite@7.1.14(@types/node@24.9.1)(jiti@2.6.1))':
+  '@tailwindcss/vite@4.1.16(rolldown-vite@7.1.14(@types/node@24.9.1)(esbuild@0.25.11)(jiti@2.6.1)(tsx@4.20.6))':
     dependencies:
       '@tailwindcss/node': 4.1.16
       '@tailwindcss/oxide': 4.1.16
       tailwindcss: 4.1.16
-      vite: rolldown-vite@7.1.14(@types/node@24.9.1)(jiti@2.6.1)
+      vite: rolldown-vite@7.1.14(@types/node@24.9.1)(esbuild@0.25.11)(jiti@2.6.1)(tsx@4.20.6)
 
   '@tybys/wasm-util@0.10.1':
     dependencies:
@@ -2493,7 +2746,7 @@ snapshots:
       '@typescript-eslint/types': 8.46.2
       eslint-visitor-keys: 4.2.1
 
-  '@vitejs/plugin-react@5.1.0(rolldown-vite@7.1.14(@types/node@24.9.1)(jiti@2.6.1))':
+  '@vitejs/plugin-react@5.1.0(rolldown-vite@7.1.14(@types/node@24.9.1)(esbuild@0.25.11)(jiti@2.6.1)(tsx@4.20.6))':
     dependencies:
       '@babel/core': 7.28.5
       '@babel/plugin-transform-react-jsx-self': 7.27.1(@babel/core@7.28.5)
@@ -2501,7 +2754,7 @@ snapshots:
       '@rolldown/pluginutils': 1.0.0-beta.43
       '@types/babel__core': 7.20.5
       react-refresh: 0.18.0
-      vite: rolldown-vite@7.1.14(@types/node@24.9.1)(jiti@2.6.1)
+      vite: rolldown-vite@7.1.14(@types/node@24.9.1)(esbuild@0.25.11)(jiti@2.6.1)(tsx@4.20.6)
     transitivePeerDependencies:
       - supports-color
 
@@ -2607,6 +2860,35 @@ snapshots:
       graceful-fs: 4.2.11
       tapable: 2.3.0
 
+  esbuild@0.25.11:
+    optionalDependencies:
+      '@esbuild/aix-ppc64': 0.25.11
+      '@esbuild/android-arm': 0.25.11
+      '@esbuild/android-arm64': 0.25.11
+      '@esbuild/android-x64': 0.25.11
+      '@esbuild/darwin-arm64': 0.25.11
+      '@esbuild/darwin-x64': 0.25.11
+      '@esbuild/freebsd-arm64': 0.25.11
+      '@esbuild/freebsd-x64': 0.25.11
+      '@esbuild/linux-arm': 0.25.11
+      '@esbuild/linux-arm64': 0.25.11
+      '@esbuild/linux-ia32': 0.25.11
+      '@esbuild/linux-loong64': 0.25.11
+      '@esbuild/linux-mips64el': 0.25.11
+      '@esbuild/linux-ppc64': 0.25.11
+      '@esbuild/linux-riscv64': 0.25.11
+      '@esbuild/linux-s390x': 0.25.11
+      '@esbuild/linux-x64': 0.25.11
+      '@esbuild/netbsd-arm64': 0.25.11
+      '@esbuild/netbsd-x64': 0.25.11
+      '@esbuild/openbsd-arm64': 0.25.11
+      '@esbuild/openbsd-x64': 0.25.11
+      '@esbuild/openharmony-arm64': 0.25.11
+      '@esbuild/sunos-x64': 0.25.11
+      '@esbuild/win32-arm64': 0.25.11
+      '@esbuild/win32-ia32': 0.25.11
+      '@esbuild/win32-x64': 0.25.11
+
   escalade@3.2.0: {}
 
   escape-string-regexp@4.0.0: {}
@@ -2736,6 +3018,10 @@ snapshots:
 
   get-nonce@1.0.1: {}
 
+  get-tsconfig@4.13.0:
+    dependencies:
+      resolve-pkg-maps: 1.0.0
+
   glob-parent@5.1.2:
     dependencies:
       is-glob: 4.0.3
@@ -2994,9 +3280,11 @@ snapshots:
 
   resolve-from@4.0.0: {}
 
+  resolve-pkg-maps@1.0.0: {}
+
   reusify@1.1.0: {}
 
-  rolldown-vite@7.1.14(@types/node@24.9.1)(jiti@2.6.1):
+  rolldown-vite@7.1.14(@types/node@24.9.1)(esbuild@0.25.11)(jiti@2.6.1)(tsx@4.20.6):
     dependencies:
       '@oxc-project/runtime': 0.92.0
       fdir: 6.5.0(picomatch@4.0.3)
@@ -3007,8 +3295,10 @@ snapshots:
       tinyglobby: 0.2.15
     optionalDependencies:
       '@types/node': 24.9.1
+      esbuild: 0.25.11
       fsevents: 2.3.3
       jiti: 2.6.1
+      tsx: 4.20.6
 
   rolldown@1.0.0-beta.41:
     dependencies:
@@ -3083,6 +3373,13 @@ snapshots:
 
   tslib@2.8.1: {}
 
+  tsx@4.20.6:
+    dependencies:
+      esbuild: 0.25.11
+      get-tsconfig: 4.13.0
+    optionalDependencies:
+      fsevents: 2.3.3
+
   tw-animate-css@1.4.0: {}
 
   type-check@0.4.0:

public/manifest.json

@@ -0,0 +1,21 @@
+{
+  "name": "Lite Kit - Lightweight Online Tools",
+  "short_name": "Lite Kit",
+  "description": "Free online tools including UUID generator, JSON formatter, Base64 encoder/decoder, network testing tools and more",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#000000",
+  "theme_color": "#000000",
+  "orientation": "portrait-primary",
+  "icons": [
+    {
+      "src": "/lite.svg",
+      "type": "image/svg+xml",
+      "sizes": "any"
+    }
+  ],
+  "categories": ["utilities", "productivity"],
+  "lang": "en",
+  "dir": "ltr"
+}
+

public/robots.txt

@@ -0,0 +1,21 @@
+# Allow all crawlers
+User-agent: *
+Allow: /
+
+# Sitemaps
+Sitemap: https://litek.typist.cc/sitemap.xml
+
+# Common bots
+User-agent: Googlebot
+Allow: /
+
+User-agent: Bingbot
+Allow: /
+
+User-agent: Baiduspider
+Allow: /
+
+# Crawl-delay for less aggressive bots
+User-agent: *
+Crawl-delay: 1
+

public/sitemap.xml

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+    <loc>https://litek.typist.cc</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>1.0</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>0.9</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool/uuid</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.9</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool/json</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.9</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool/base64</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.9</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool/network/dns</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.8</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool/network/ping</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.8</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool/network/tcping</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.8</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool/network/speedtest</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.8</priority>
+  </url>
+  <url>
+    <loc>https://litek.typist.cc/tool/network/ipquery</loc>
+    <lastmod>2025-10-29</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.8</priority>
+  </url>
+</urlset>

scripts/generate-sitemap.ts

@@ -0,0 +1,83 @@
+import * as fs from 'fs';
+import * as path from 'path';
+import { fileURLToPath } from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+interface SitemapUrl {
+  loc: string;
+  lastmod: string;
+  changefreq: string;
+  priority: string;
+}
+
+const BASE_URL = 'https://litek.typist.cc';
+const currentDate = new Date().toISOString().split('T')[0];
+
+const tools = [
+  { path: '/tool/uuid', priority: '0.9' },
+  { path: '/tool/json', priority: '0.9' },
+  { path: '/tool/base64', priority: '0.9' },
+  { path: '/tool/network/dns', priority: '0.8' },
+  { path: '/tool/network/ping', priority: '0.8' },
+  { path: '/tool/network/tcping', priority: '0.8' },
+  { path: '/tool/network/speedtest', priority: '0.8' },
+  { path: '/tool/network/ipquery', priority: '0.8' },
+];
+
+const urls: SitemapUrl[] = [
+  {
+    loc: BASE_URL,
+    lastmod: currentDate,
+    changefreq: 'weekly',
+    priority: '1.0',
+  },
+  {
+    loc: `${BASE_URL}/tool`,
+    lastmod: currentDate,
+    changefreq: 'weekly',
+    priority: '0.9',
+  },
+];
+
+// Add all tool pages
+tools.forEach((tool) => {
+  urls.push({
+    loc: `${BASE_URL}${tool.path}`,
+    lastmod: currentDate,
+    changefreq: 'monthly',
+    priority: tool.priority,
+  });
+});
+
+function generateSitemap(): string {
+  let xml = '<?xml version="1.0" encoding="UTF-8"?>\n';
+  xml += '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n';
+
+  urls.forEach((url) => {
+    xml += '  <url>\n';
+    xml += `    <loc>${url.loc}</loc>\n`;
+    xml += `    <lastmod>${url.lastmod}</lastmod>\n`;
+    xml += `    <changefreq>${url.changefreq}</changefreq>\n`;
+    xml += `    <priority>${url.priority}</priority>\n`;
+    xml += '  </url>\n';
+  });
+
+  xml += '</urlset>\n';
+  return xml;
+}
+
+// Generate and write sitemap
+const sitemap = generateSitemap();
+const publicDir = path.resolve(__dirname, '../public');
+const sitemapPath = path.join(publicDir, 'sitemap.xml');
+
+// Ensure public directory exists
+if (!fs.existsSync(publicDir)) {
+  fs.mkdirSync(publicDir, { recursive: true });
+}
+
+fs.writeFileSync(sitemapPath, sitemap, 'utf-8');
+console.log(`✅ Sitemap generated successfully at ${sitemapPath}`);
+

src/components/sidebar/index.tsx

@@ -1,11 +1,11 @@
 import type { ReactNode } from "react";
+import { Link } from "react-router-dom";
+import { ChevronRight } from "lucide-react";
+
 import { Sidebar, SidebarContent, SidebarFooter, SidebarGroup, SidebarGroupContent, SidebarGroupLabel, SidebarHeader, SidebarMenuButton, SidebarMenuItem, SidebarMenu, SidebarMenuSub, SidebarMenuSubItem, SidebarMenuSubButton } from "@/components/ui/sidebar";
 import { Collapsible, CollapsibleTrigger, CollapsibleContent } from "@/components/ui/collapsible";
 import { tools, type Tool } from "@/components/tool";
-import { Link } from "react-router-dom";
+
-import { ModeToggle } from "@/components/theme/toggle";
-import { Button } from "../ui/button";
-import { ChevronRight } from "lucide-react";
 
 export const AppSidebar = () => {
   // 递归构建完整路径
@@ -13,6 +13,46 @@ export const AppSidebar = () => {
     return `/tool/${pathSegments.join("/")}`;
   };
 
+  // 递归渲染子菜单内容
+  const renderSubMenuContent = (child: Tool, currentPaths: string[]): ReactNode => {
+    if (child.children) {
+      // 子菜单内的可折叠项
+      return (
+        <Collapsible defaultOpen={false} className="group/collapsible">
+          <CollapsibleTrigger asChild>
+            <SidebarMenuSubButton>
+              {child.icon}
+              <span>{child.name}</span>
+              <ChevronRight className="ml-auto transition-transform duration-200 group-data-[state=open]/collapsible:rotate-90" />
+            </SidebarMenuSubButton>
+          </CollapsibleTrigger>
+          <CollapsibleContent>
+            <SidebarMenuSub>
+              {child.children.map((subChild) => (
+                <SidebarMenuSubItem key={subChild.name}>
+                  {renderSubMenuContent(subChild, [...currentPaths, child.path])}
+                </SidebarMenuSubItem>
+              ))}
+            </SidebarMenuSub>
+          </CollapsibleContent>
+        </Collapsible>
+      );
+    }
+
+    // 叶子节点
+    return (
+      <SidebarMenuSubButton asChild>
+        <Link
+          to={buildFullPath([...currentPaths, child.path])}
+          title={child.description}
+        >
+          {child.icon}
+          <span>{child.name}</span>
+        </Link>
+      </SidebarMenuSubButton>
+    );
+  };
+
   // 递归渲染菜单项
   const renderMenuItem = (tool: Tool, parentPaths: string[] = []): ReactNode => {
     const currentPaths = [...parentPaths, tool.path];
@@ -20,12 +60,11 @@ export const AppSidebar = () => {
     if (tool.children) {
       // 有子菜单的项目
       return (
-        <Collapsible
+        <SidebarMenuItem key={tool.name}>
-          key={tool.name}
+          <Collapsible
-          defaultOpen={false}
+            defaultOpen={false}
-          className="group/collapsible"
+            className="group/collapsible"
-        >
+          >
-          <SidebarMenuItem>
             <CollapsibleTrigger asChild>
               <SidebarMenuButton tooltip={tool.description}>
                 {tool.icon}
@@ -37,25 +76,13 @@ export const AppSidebar = () => {
               <SidebarMenuSub>
                 {tool.children.map((child) => (
                   <SidebarMenuSubItem key={child.name}>
-                    {child.children ? (
+                    {renderSubMenuContent(child, currentPaths)}
-                      renderMenuItem(child, currentPaths)
-                    ) : (
-                      <SidebarMenuSubButton asChild>
-                        <Link
-                          to={buildFullPath([...currentPaths, child.path])}
-                          title={child.description}
-                        >
-                          {child.icon}
-                          <span>{child.name}</span>
-                        </Link>
-                      </SidebarMenuSubButton>
-                    )}
                   </SidebarMenuSubItem>
                 ))}
               </SidebarMenuSub>
             </CollapsibleContent>
-          </SidebarMenuItem>
+          </Collapsible>
-        </Collapsible>
+        </SidebarMenuItem>
       );
     }
 
@@ -88,10 +115,9 @@ export const AppSidebar = () => {
         </SidebarGroup>
       </SidebarContent>
       <SidebarFooter className="flex flex-row justify-between items-center gap-2">
-        <Button variant="link">
+        <SidebarMenuButton variant="outline" asChild>
           <a href="mailto:litek@mail.typist.cc">need more tools?</a>
-        </Button>
+        </SidebarMenuButton>
-        <ModeToggle />
       </SidebarFooter>
     </Sidebar>
   );

src/components/tool/index.tsx

@@ -1,17 +1,22 @@
-import type { ReactNode } from 'react';
+import { lazy, type ReactNode, type ComponentType } from 'react';
 import { FileJson, Hash, Binary, Network, Globe, Activity, Gauge, Wifi, MapPin } from 'lucide-react'
 
-import UUID from './uuid'
+// 懒加载工具组件
-import JSON from './json'
+const UUID = lazy(() => import('./uuid'))
-import Base64 from './base64'
+const JSON = lazy(() => import('./json'))
-import { DNS, Ping, TCPing, SpeedTest, IPQuery } from './network'
+const Base64 = lazy(() => import('./base64'))
+const DNS = lazy(() => import('./network/dns'))
+const Ping = lazy(() => import('./network/ping'))
+const TCPing = lazy(() => import('./network/tcping'))
+const SpeedTest = lazy(() => import('./network/speedtest'))
+const IPQuery = lazy(() => import('./network/ipquery'))
 
 export interface Tool {
   path: string;
   name: string;
   icon: ReactNode;
   description: string;
-  component?: ReactNode;
+  component?: ComponentType;
   children?: Tool[];
 }
 
@@ -21,21 +26,21 @@ export const tools: Tool[] = [
     name: "UUID Generator",
     description: "Generate a UUID",
     icon: <Hash />,
-    component: <UUID />,
+    component: UUID,
   },
   {
     path: "json",
     name: "JSON Formatter",
     description: "Format and validate JSON",
     icon: <FileJson />,
-    component: <JSON />,
+    component: JSON,
   },
   {
     path: "base64",
     name: "Base64 Encoder/Decoder",
     description: "Encode and decode Base64",
     icon: <Binary />,
-    component: <Base64 />,
+    component: Base64,
   },
   {
     path: "network",
@@ -48,35 +53,35 @@ export const tools: Tool[] = [
         name: "DNS Lookup",
         description: "DNS query tool",
         icon: <Globe />,
-        component: <DNS />,
+        component: DNS,
       },
       {
         path: "ping",
         name: "Ping",
         description: "Ping test tool",
         icon: <Activity />,
-        component: <Ping />,
+        component: Ping,
       },
       {
         path: "tcping",
         name: "TCPing",
         description: "TCP port connectivity test",
         icon: <Wifi />,
-        component: <TCPing />,
+        component: TCPing,
       },
       {
         path: "speedtest",
         name: "Speed Test",
         description: "Website speed test",
         icon: <Gauge />,
-        component: <SpeedTest />,
+        component: SpeedTest,
       },
       {
         path: "ipquery",
         name: "IP Query",
         description: "Query IP location, quality and risk info",
         icon: <MapPin />,
-        component: <IPQuery />,
+        component: IPQuery,
       },
     ],
   },

src/components/tool/network/index.tsx

@@ -1,6 +0,0 @@
-export { default as DNS } from './dns';
-export { default as Ping } from './ping';
-export { default as TCPing } from './tcping';
-export { default as SpeedTest } from './speedtest';
-export { default as IPQuery } from './ipquery';
-

src/components/tool/network/ipquery.tsx

@@ -91,8 +91,8 @@ const Tool: FC = () => {
     const startTime = performance.now();
 
     try {
-      // 使用 ip-api.com (免费，功能较全)
+      // 使用 ipinfo.io (免费，稳定可靠)
-      const response = await fetch(`http://ip-api.com/json/${encodeURIComponent(ip.trim())}?fields=status,message,country,countryCode,region,city,lat,lon,timezone,isp,org,as,proxy,hosting,query`);
+      const response = await fetch(`https://ipinfo.io/${encodeURIComponent(ip.trim())}/json`);
       
       if (!response.ok) {
         throw new Error(`HTTP error! status: ${response.status}`);
@@ -103,28 +103,8 @@ const Tool: FC = () => {
       
       setQueryTime(endTime - startTime);
 
-      if (data.status === "fail") {
+      // ipinfo.io 返回格式已经符合 IPInfo 接口
-        toast.error(data.message || "Query failed");
+      setIpInfo(data);
-        return;
-      }
-
-      // 转换为统一格式
-      const ipData: IPInfo = {
-        ip: data.query,
-        city: data.city,
-        region: data.region,
-        country: data.country,
-        countryCode: data.countryCode,
-        loc: data.lat && data.lon ? `${data.lat},${data.lon}` : undefined,
-        timezone: data.timezone,
-        isp: data.isp,
-        org: data.org,
-        as: data.as,
-        proxy: data.proxy,
-        hosting: data.hosting,
-      };
-
-      setIpInfo(ipData);
       toast.success("Query successful");
     } catch (error) {
       if (error instanceof Error) {
@@ -146,14 +126,18 @@ const Tool: FC = () => {
   const getRiskLevel = () => {
     if (!ipInfo) return null;
     
-    if (ipInfo.proxy || ipInfo.hosting) {
+    // ipinfo.io 通过 org 字段可以简单判断是否为托管IP
+    const orgLower = ipInfo.org?.toLowerCase() || "";
+    const isHosting = orgLower.includes("hosting") || 
+                     orgLower.includes("datacenter") || 
+                     orgLower.includes("cloud") ||
+                     orgLower.includes("server");
+    
+    if (isHosting) {
       return {
-        level: "High",
+        level: "Medium",
-        color: "text-red-500",
+        color: "text-yellow-500",
-        reasons: [
+        reasons: ["Possible Hosting/Datacenter IP"],
-          ipInfo.proxy && "Proxy/VPN detected",
-          ipInfo.hosting && "Hosting/Datacenter IP",
-        ].filter(Boolean),
       };
     }
     

src/hooks/use-seo.ts

@@ -0,0 +1,96 @@
+import { useEffect } from 'react';
+import { useLocation } from 'react-router-dom';
+
+interface UseSEOOptions {
+  title?: string;
+  description?: string;
+  baseUrl?: string;
+}
+
+/**
+ * SEO Hook - 动态更新页面 SEO 元数据
+ * 
+ * @param options - SEO 配置选项
+ * @param options.title - 页面标题（可选）
+ * @param options.description - 页面描述（可选）
+ * @param options.baseUrl - 网站基础 URL，默认为 https://litek.typist.cc
+ * 
+ * @example
+ * ```tsx
+ * // 在组件中使用
+ * useSEO({
+ *   title: 'UUID Generator',
+ *   description: 'Free online UUID generator tool'
+ * });
+ * ```
+ */
+export const useSEO = (options: UseSEOOptions = {}) => {
+  const location = useLocation();
+  const { 
+    title, 
+    description, 
+    baseUrl = 'https://litek.typist.cc' 
+  } = options;
+
+  useEffect(() => {
+    // 构建当前页面的完整 URL
+    const canonicalUrl = `${baseUrl}${location.pathname}`;
+    
+    // 更新或创建 canonical 链接
+    let canonical = document.querySelector('link[rel="canonical"]') as HTMLLinkElement;
+    if (!canonical) {
+      canonical = document.createElement('link');
+      canonical.setAttribute('rel', 'canonical');
+      document.head.appendChild(canonical);
+    }
+    canonical.setAttribute('href', canonicalUrl);
+
+    // 更新页面标题
+    if (title) {
+      document.title = `${title} - Lite Kit`;
+    }
+
+    // 更新 meta description
+    if (description) {
+      let metaDescription = document.querySelector('meta[name="description"]') as HTMLMetaElement;
+      if (metaDescription) {
+        metaDescription.setAttribute('content', description);
+      }
+    }
+
+    // 更新 Open Graph URL
+    let ogUrl = document.querySelector('meta[property="og:url"]') as HTMLMetaElement;
+    if (ogUrl) {
+      ogUrl.setAttribute('content', canonicalUrl);
+    }
+
+    // 更新 Open Graph Title
+    if (title) {
+      let ogTitle = document.querySelector('meta[property="og:title"]') as HTMLMetaElement;
+      if (ogTitle) {
+        ogTitle.setAttribute('content', `${title} - Lite Kit`);
+      }
+
+      // 更新 Twitter Card Title
+      let twitterTitle = document.querySelector('meta[name="twitter:title"]') as HTMLMetaElement;
+      if (twitterTitle) {
+        twitterTitle.setAttribute('content', `${title} - Lite Kit`);
+      }
+    }
+
+    // 更新 Open Graph Description
+    if (description) {
+      let ogDescription = document.querySelector('meta[property="og:description"]') as HTMLMetaElement;
+      if (ogDescription) {
+        ogDescription.setAttribute('content', description);
+      }
+
+      // 更新 Twitter Card Description
+      let twitterDescription = document.querySelector('meta[name="twitter:description"]') as HTMLMetaElement;
+      if (twitterDescription) {
+        twitterDescription.setAttribute('content', description);
+      }
+    }
+  }, [location.pathname, title, description, baseUrl]);
+};
+

src/layout.tsx

@@ -4,20 +4,28 @@ import { Outlet } from "react-router-dom";
 import { ThemeProvider } from "@/components/theme/provider"
 import { SidebarProvider, SidebarTrigger } from "@/components/ui/sidebar"
 import { AppSidebar } from "@/components/sidebar";
+import { ModeToggle } from "@/components/theme/toggle";
 
-export const Layout: FC = () => (
+import { useSEO } from "@/hooks/use-seo";
-  <ThemeProvider defaultTheme="dark" storageKey="vite-ui-theme">
+
-    <SidebarProvider>
+export const Layout: FC = () => {
-      <AppSidebar />
+  // 使用 SEO hook 自动更新 canonical URL 和其他 SEO 元数据
-      <div className="p-4 flex flex-col w-full h-[100vh] overflow-hidden">
+  useSEO();
-        <nav className="flex items-center justify-between">
+
-          <SidebarTrigger className="size-10" />
+  return (
-          <div role="actions" />
+    <ThemeProvider defaultTheme="dark" storageKey="vite-ui-theme">
-        </nav>
+      <SidebarProvider>
-        <main className="flex-1 overflow-auto p-4 overflow-hidden">
+        <AppSidebar />
-          <Outlet />
+        <div className="p-4 flex flex-col w-full h-[100vh] overflow-hidden">
-        </main>
+          <nav className="flex items-center justify-between">
-      </div>
+            <SidebarTrigger className="size-10" />
-    </SidebarProvider>
+            <ModeToggle />
-  </ThemeProvider>
+          </nav>
-);
+          <main className="flex-1 overflow-auto p-4 overflow-hidden">
+            <Outlet />
+          </main>
+        </div>
+      </SidebarProvider>
+    </ThemeProvider>
+  );
+};

src/router.tsx

@@ -1,3 +1,4 @@
+import { Suspense, createElement } from "react";
 import {
   createBrowserRouter,
   redirect,
@@ -8,6 +9,19 @@ import {
 import { tools, type Tool } from "@/components/tool";
 import { Layout } from "./layout";
 
+// 加载中的占位组件
+const LoadingFallback = () => (
+  <div className="flex items-center justify-center h-full">
+    <div className="text-center flex flex-col items-center gap-3">
+      <div className="relative">
+        <div className="h-12 w-12 rounded-full border-4 border-muted"></div>
+        <div className="absolute top-0 left-0 h-12 w-12 rounded-full border-4 border-primary border-t-transparent animate-spin"></div>
+      </div>
+      <p className="text-sm text-muted-foreground font-medium">Loading...</p>
+    </div>
+  </div>
+);
+
 const buildToolRoutes = (tools: Tool[]): RouteObject[] => {
   return tools.map((tool) => {
     const route: RouteObject = {
@@ -15,7 +29,12 @@ const buildToolRoutes = (tools: Tool[]): RouteObject[] => {
     };
 
     if (tool.component) {
-      route.element = tool.component;
+      // 使用 Suspense 包裹懒加载组件
+      route.element = (
+        <Suspense fallback={<LoadingFallback />}>
+          {createElement(tool.component)}
+        </Suspense>
+      );
     }
 
     if (tool.children && tool.children.length > 0) {

vite.config.ts

@@ -11,4 +11,27 @@ export default defineConfig({
       "@": path.resolve(__dirname, "./src"),
     },
   },
+  build: {
+    rollupOptions: {
+      output: {
+        manualChunks: (id) => {
+          // React核心库
+          if (id.includes('node_modules/react') || 
+              id.includes('node_modules/react-dom') || 
+              id.includes('node_modules/react-router-dom')) {
+            return 'react-vendor';
+          }
+          // Radix UI组件
+          if (id.includes('node_modules/@radix-ui')) {
+            return 'ui-vendor';
+          }
+          // 图标库
+          if (id.includes('node_modules/lucide-react')) {
+            return 'icons';
+          }
+        },
+      },
+    },
+    chunkSizeWarningLimit: 500,
+  },
 })