feat: 全面优化 SEO 元数据、结构化数据和站点地图

为所有工具页面添加 canonical URL、keywords、SoftwareApplication 和
BreadcrumbList 结构化数据，优化标题和描述以包含搜索意图关键词，
更新站点地图日期和优先级，移除无效的 SearchAction，新增 PWA manifest。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

public/manifest.json

@@ -0,0 +1,16 @@
+{
+  "name": "KYMR.TOP - Game Asset Tools",
+  "short_name": "KYMR.TOP",
+  "description": "Free online tools for game developers. Compress images, extract video frames, optimize audio, generate texture atlases. Browser-based, privacy-first.",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#09090b",
+  "theme_color": "#09090b",
+  "icons": [
+    {
+      "src": "/icon.svg",
+      "sizes": "any",
+      "type": "image/svg+xml"
+    }
+  ]
+}

src/app/(dashboard)/tools/audio-compress/layout.tsx

@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import { headers } from "next/headers";
+import { SoftwareApplicationStructuredData, BreadcrumbStructuredData } from "@/components/seo/StructuredData";
 
 export async function generateMetadata(): Promise<Metadata> {
   const headersList = await headers();
@@ -7,25 +8,61 @@ export async function generateMetadata(): Promise<Metadata> {
   const lang = acceptLanguage.includes("zh") ? "zh" : "en";
 
   const titles = {
-    en: "Audio Compression - Compress & Convert Audio Files",
+    en: "Audio Compression - Compress & Convert Audio Files Online Free",
-    zh: "音频压缩 - 压缩并转换音频文件",
+    zh: "音频压缩 - 免费在线压缩并转换音频文件",
   };
 
   const descriptions = {
-    en: "Compress and convert audio files to various formats including MP3, AAC, OGG, FLAC. Adjust bitrate and sample rate for optimal quality.",
+    en: "Free online audio compressor and converter. Compress MP3, WAV, OGG, AAC, FLAC files. Adjust bitrate, sample rate, channels. Browser-based with no uploads required.",
-    zh: "压缩并转换音频文件为多种格式，包括 MP3、AAC、OGG、FLAC。调整比特率和采样率以获得最佳质量。",
+    zh: "免费在线音频压缩转换工具。压缩 MP3、WAV、OGG、AAC、FLAC 文件。调整比特率、采样率、声道。浏览器本地处理无需上传。",
   };
 
+  const keywords = {
+    en: [
+      "audio compression",
+      "audio compressor online",
+      "compress MP3",
+      "audio converter",
+      "WAV to MP3",
+      "reduce audio size",
+      "audio bitrate converter",
+      "OGG converter",
+      "FLAC converter",
+      "browser-based",
+    ],
+    zh: [
+      "音频压缩",
+      "在线音频压缩",
+      "MP3压缩",
+      "音频转换",
+      "WAV转MP3",
+      "缩小音频",
+      "音频比特率转换",
+      "OGG转换",
+      "FLAC转换",
+      "浏览器端",
+    ],
+  };
+
+  const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://kymr.top";
+
   return {
     title: titles[lang],
     description: descriptions[lang],
+    keywords: keywords[lang],
+    alternates: {
+      canonical: `${baseUrl}/tools/audio-compress`,
+    },
     openGraph: {
       title: titles[lang],
       description: descriptions[lang],
+      url: `${baseUrl}/tools/audio-compress`,
+      type: "website",
     },
     twitter: {
       title: titles[lang],
       description: descriptions[lang],
+      card: "summary_large_image",
     },
   };
 }
@@ -35,5 +72,23 @@ export default function AudioCompressLayout({
 }: {
   children: React.ReactNode;
 }) {
-  return children;
+  return (
+    <>
+      <SoftwareApplicationStructuredData
+        name="Audio Compressor - KYMR.TOP"
+        description="Free online audio compression and conversion tool. Support MP3, WAV, OGG, AAC, FLAC formats. Browser-based processing with no uploads."
+        url="/tools/audio-compress"
+        category="MultimediaApplication"
+        operatingSystem="Any (Browser-based)"
+      />
+      <BreadcrumbStructuredData
+        items={[
+          { name: "Home", url: "/" },
+          { name: "Tools", url: "/tools" },
+          { name: "Audio Compression", url: "/tools/audio-compress" },
+        ]}
+      />
+      {children}
+    </>
+  );
 }

src/app/(dashboard)/tools/image-compress/layout.tsx

@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import { headers } from "next/headers";
+import { SoftwareApplicationStructuredData, BreadcrumbStructuredData } from "@/components/seo/StructuredData";
 
 export async function generateMetadata(): Promise<Metadata> {
   const headersList = await headers();
@@ -7,25 +8,61 @@ export async function generateMetadata(): Promise<Metadata> {
   const lang = acceptLanguage.includes("zh") ? "zh" : "en";
 
   const titles = {
-    en: "Image Compression - Optimize Images for Web & Mobile",
+    en: "Image Compression - Optimize PNG, JPEG, WebP Online Free",
-    zh: "图片压缩 - 为网页和移动端优化图片",
+    zh: "图片压缩 - 免费在线优化 PNG、JPEG、WebP 图片",
   };
 
   const descriptions = {
-    en: "Optimize images for web and mobile without quality loss. Support for batch processing and format conversion including PNG, JPEG, WebP.",
+    en: "Free online image compressor. Optimize PNG, JPEG, WebP, AVIF images without quality loss. Batch processing, format conversion, browser-based with no uploads required.",
-    zh: "为网页和移动端优化图片，不影响质量。支持批量处理和格式转换，包括 PNG、JPEG、WebP。",
+    zh: "免费在线图片压缩工具。无损优化 PNG、JPEG、WebP、AVIF 图片。支持批量处理、格式转换，浏览器本地处理无需上传。",
   };
 
+  const keywords = {
+    en: [
+      "image compression",
+      "image compressor online",
+      "compress PNG",
+      "compress JPEG",
+      "WebP converter",
+      "image optimizer",
+      "batch image compression",
+      "reduce image size",
+      "AVIF converter",
+      "browser-based",
+    ],
+    zh: [
+      "图片压缩",
+      "在线图片压缩",
+      "PNG压缩",
+      "JPEG压缩",
+      "WebP转换",
+      "图片优化",
+      "批量压缩",
+      "缩小图片",
+      "AVIF转换",
+      "浏览器端",
+    ],
+  };
+
+  const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://kymr.top";
+
   return {
     title: titles[lang],
     description: descriptions[lang],
+    keywords: keywords[lang],
+    alternates: {
+      canonical: `${baseUrl}/tools/image-compress`,
+    },
     openGraph: {
       title: titles[lang],
       description: descriptions[lang],
+      url: `${baseUrl}/tools/image-compress`,
+      type: "website",
     },
     twitter: {
       title: titles[lang],
       description: descriptions[lang],
+      card: "summary_large_image",
     },
   };
 }
@@ -35,5 +72,23 @@ export default function ImageCompressLayout({
 }: {
   children: React.ReactNode;
 }) {
-  return children;
+  return (
+    <>
+      <SoftwareApplicationStructuredData
+        name="Image Compressor - KYMR.TOP"
+        description="Free online image compression tool. Optimize PNG, JPEG, WebP, AVIF images without quality loss. Browser-based processing with no uploads."
+        url="/tools/image-compress"
+        category="MultimediaApplication"
+        operatingSystem="Any (Browser-based)"
+      />
+      <BreadcrumbStructuredData
+        items={[
+          { name: "Home", url: "/" },
+          { name: "Tools", url: "/tools" },
+          { name: "Image Compression", url: "/tools/image-compress" },
+        ]}
+      />
+      {children}
+    </>
+  );
 }

src/app/(dashboard)/tools/texture-atlas/layout.tsx

@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import { headers } from "next/headers";
+import { SoftwareApplicationStructuredData, BreadcrumbStructuredData } from "@/components/seo/StructuredData";
 
 export async function generateMetadata(): Promise<Metadata> {
   const headersList = await headers();
@@ -7,47 +8,55 @@ export async function generateMetadata(): Promise<Metadata> {
   const lang = acceptLanguage.includes("zh") ? "zh" : "en";
 
   const titles = {
-    en: "Texture Atlas Generator - Create Sprite Sheets Online",
+    en: "Texture Atlas Generator - Create Sprite Sheets Online Free",
-    zh: "纹理图集生成器 - 在线创建精灵图",
+    zh: "纹理图集生成器 - 免费在线创建精灵图",
   };
 
   const descriptions = {
-    en: "Generate texture atlases and sprite sheets for game development. Pack multiple sprites into a single texture atlas with JSON data export. All processing happens locally in your browser.",
+    en: "Free online texture atlas and sprite sheet generator for game development. Pack multiple sprites into optimized atlases with JSON data export. Browser-based, no uploads needed.",
-    zh: "为游戏开发生成纹理图集和精灵图。将多个精灵打包到单个纹理图集中，支持导出 JSON 数据。所有处理都在您的浏览器本地进行。",
+    zh: "免费在线纹理图集和精灵图生成器，专为游戏开发设计。将多个精灵打包到优化的图集中，支持导出 JSON 数据。浏览器本地处理，无需上传。",
   };
 
   const keywords = {
     en: [
       "texture atlas",
-      "sprite sheet",
+      "sprite sheet generator",
-      "game development",
+      "texture packer online",
+      "sprite sheet creator",
+      "game development tools",
       "sprite packer",
-      "texture packing",
-      "game assets",
-      "sprite generator",
       "JSON export",
+      "game assets",
+      "texture atlas generator",
       "browser-based",
     ],
     zh: [
       "纹理图集",
-      "精灵图",
+      "精灵图生成器",
-      "游戏开发",
+      "在线纹理打包",
+      "精灵图制作",
+      "游戏开发工具",
       "精灵打包",
-      "纹理打包",
-      "游戏资产",
-      "精灵生成器",
       "JSON导出",
+      "游戏资产",
+      "纹理图集生成器",
       "浏览器端",
     ],
   };
 
+  const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://kymr.top";
+
   return {
     title: titles[lang],
     description: descriptions[lang],
     keywords: keywords[lang],
+    alternates: {
+      canonical: `${baseUrl}/tools/texture-atlas`,
+    },
     openGraph: {
       title: titles[lang],
       description: descriptions[lang],
+      url: `${baseUrl}/tools/texture-atlas`,
       type: "website",
     },
     twitter: {
@@ -63,5 +72,23 @@ export default function TextureAtlasLayout({
 }: {
   children: React.ReactNode;
 }) {
-  return children;
+  return (
+    <>
+      <SoftwareApplicationStructuredData
+        name="Texture Atlas Generator - KYMR.TOP"
+        description="Free online texture atlas and sprite sheet generator. Pack multiple sprites into optimized atlases with JSON export. Browser-based processing."
+        url="/tools/texture-atlas"
+        category="DeveloperApplication"
+        operatingSystem="Any (Browser-based)"
+      />
+      <BreadcrumbStructuredData
+        items={[
+          { name: "Home", url: "/" },
+          { name: "Tools", url: "/tools" },
+          { name: "Texture Atlas", url: "/tools/texture-atlas" },
+        ]}
+      />
+      {children}
+    </>
+  );
 }

src/app/(dashboard)/tools/video-frames/layout.tsx

@@ -1,5 +1,6 @@
 import type { Metadata } from "next";
 import { headers } from "next/headers";
+import { SoftwareApplicationStructuredData, BreadcrumbStructuredData } from "@/components/seo/StructuredData";
 
 export async function generateMetadata(): Promise<Metadata> {
   const headersList = await headers();
@@ -7,25 +8,59 @@ export async function generateMetadata(): Promise<Metadata> {
   const lang = acceptLanguage.includes("zh") ? "zh" : "en";
 
   const titles = {
-    en: "Video to Frame Sequence - Extract Frame Sequences from Videos",
+    en: "Video to Frame Sequence - Extract Frames from Video Online Free",
-    zh: "视频转序列帧 - 从视频中提取序列帧",
+    zh: "视频转序列帧 - 免费在线从视频提取帧图片",
   };
 
   const descriptions = {
-    en: "Extract frame sequences from videos with customizable frame rates. Perfect for sprite animations and game asset preparation. Supports MP4, MOV, AVI, WebM.",
+    en: "Free online video to frame sequence extractor. Extract PNG, WebP, JPEG frames from MP4, WebM, MOV videos with custom frame rates. Perfect for sprite animations and game assets.",
-    zh: "从视频中提取序列帧，可自定义帧率。非常适合精灵动画制作和游戏素材准备。支持 MP4、MOV、AVI、WebM。",
+    zh: "免费在线视频转序列帧工具。从 MP4、WebM、MOV 视频中提取 PNG、WebP、JPEG 帧图片，可自定义帧率。非常适合精灵动画和游戏素材制作。",
   };
 
+  const keywords = {
+    en: [
+      "video to frames",
+      "video frame extractor",
+      "extract frames from video",
+      "video to PNG sequence",
+      "video to sprite sheet",
+      "frame sequence generator",
+      "MP4 to frames",
+      "game animation frames",
+      "browser-based",
+    ],
+    zh: [
+      "视频转序列帧",
+      "视频抽帧",
+      "视频帧提取",
+      "视频转PNG",
+      "视频转精灵图",
+      "序列帧生成",
+      "MP4转帧",
+      "游戏动画帧",
+      "浏览器端",
+    ],
+  };
+
+  const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://kymr.top";
+
   return {
     title: titles[lang],
     description: descriptions[lang],
+    keywords: keywords[lang],
+    alternates: {
+      canonical: `${baseUrl}/tools/video-frames`,
+    },
     openGraph: {
       title: titles[lang],
       description: descriptions[lang],
+      url: `${baseUrl}/tools/video-frames`,
+      type: "website",
     },
     twitter: {
       title: titles[lang],
       description: descriptions[lang],
+      card: "summary_large_image",
     },
   };
 }
@@ -35,5 +70,23 @@ export default function VideoFramesLayout({
 }: {
   children: React.ReactNode;
 }) {
-  return children;
+  return (
+    <>
+      <SoftwareApplicationStructuredData
+        name="Video Frame Extractor - KYMR.TOP"
+        description="Free online video to frame sequence tool. Extract PNG, WebP, JPEG frames from videos with custom frame rates. Browser-based processing."
+        url="/tools/video-frames"
+        category="MultimediaApplication"
+        operatingSystem="Any (Browser-based)"
+      />
+      <BreadcrumbStructuredData
+        items={[
+          { name: "Home", url: "/" },
+          { name: "Tools", url: "/tools" },
+          { name: "Video to Frames", url: "/tools/video-frames" },
+        ]}
+      />
+      {children}
+    </>
+  );
 }

src/app/layout.tsx

@@ -73,6 +73,7 @@ export const metadata: Metadata = {
   icons: {
     icon: "/icon.svg",
   },
+  manifest: "/manifest.json",
   openGraph: {
     type: "website",
     siteName: "KYMR.TOP",

src/app/sitemap.ts

@@ -5,56 +5,61 @@ interface ToolPage {
   en: { title: string; description: string };
   zh: { title: string; description: string };
   lastModified: Date;
+  priority: number;
 }
 
 const tools: ToolPage[] = [
   {
     path: "/tools/image-compress",
     en: {
-      title: "Image Compression - Optimize Images for Web & Mobile",
+      title: "Image Compression - Optimize PNG, JPEG, WebP Online Free",
-      description: "Optimize images for web and mobile without quality loss. Support for batch processing and format conversion including PNG, JPEG, WebP.",
+      description: "Free online image compressor. Optimize PNG, JPEG, WebP, AVIF images without quality loss. Batch processing, format conversion, browser-based.",
     },
     zh: {
-      title: "图片压缩 - 为网页和移动端优化图片",
+      title: "图片压缩 - 免费在线优化 PNG、JPEG、WebP 图片",
-      description: "为网页和移动端优化图片，不影响质量。支持批量处理和格式转换，包括 PNG、JPEG、WebP。",
+      description: "免费在线图片压缩工具。无损优化 PNG、JPEG、WebP、AVIF 图片。支持批量处理、格式转换，浏览器本地处理。",
     },
-    lastModified: new Date("2025-01-01"),
+    lastModified: new Date("2026-02-08"),
+    priority: 0.9,
   },
   {
     path: "/tools/video-frames",
     en: {
-      title: "Video to Frame Sequence - Extract Frame Sequences from Videos",
+      title: "Video to Frame Sequence - Extract Frames from Video Online Free",
-      description: "Extract frame sequences from videos with precision control. Support for MP4, WebM and other video formats. Export as PNG, WebP or ZIP.",
+      description: "Free online video to frame sequence extractor. Extract PNG, WebP, JPEG frames from MP4, WebM, MOV videos with custom frame rates.",
     },
     zh: {
-      title: "视频转序列帧 - 从视频中提取序列帧",
+      title: "视频转序列帧 - 免费在线从视频提取帧图片",
-      description: "精确控制从视频中提取序列帧。支持 MP4、WebM 等视频格式。导出为 PNG、WebP 或 ZIP。",
+      description: "免费在线视频转序列帧工具。从 MP4、WebM、MOV 视频中提取 PNG、WebP、JPEG 帧图片，可自定义帧率。",
     },
-    lastModified: new Date("2025-01-01"),
+    lastModified: new Date("2026-02-08"),
+    priority: 0.9,
   },
   {
     path: "/tools/audio-compress",
     en: {
-      title: "Audio Compression - Compress & Convert Audio Files",
+      title: "Audio Compression - Compress & Convert Audio Files Online Free",
-      description: "Compress and convert audio files with ease. Support for MP3, WAV, OGG and more. Adjustable quality settings.",
+      description: "Free online audio compressor and converter. Compress MP3, WAV, OGG, AAC, FLAC files. Browser-based with no uploads required.",
     },
     zh: {
-      title: "音频压缩 - 压缩并转换音频文件",
+      title: "音频压缩 - 免费在线压缩并转换音频文件",
-      description: "轻松压缩和转换音频文件。支持 MP3、WAV、OGG 等格式。可调节质量设置。",
+      description: "免费在线音频压缩转换工具。压缩 MP3、WAV、OGG、AAC、FLAC 文件。浏览器本地处理无需上传。",
     },
-    lastModified: new Date("2025-01-01"),
+    lastModified: new Date("2026-02-08"),
+    priority: 0.8,
   },
   {
     path: "/tools/texture-atlas",
     en: {
-      title: "Texture Atlas Generator - Create Sprite Sheets Online",
+      title: "Texture Atlas Generator - Create Sprite Sheets Online Free",
-      description: "Generate texture atlases and sprite sheets for game development. Pack multiple sprites into a single texture atlas with JSON data export.",
+      description: "Free online texture atlas and sprite sheet generator for game development. Pack multiple sprites into optimized atlases with JSON data export.",
     },
     zh: {
-      title: "纹理图集生成器 - 在线创建精灵图",
+      title: "纹理图集生成器 - 免费在线创建精灵图",
-      description: "为游戏开发生成纹理图集和精灵图。将多个精灵打包到单个纹理图集中，支持导出 JSON 数据。",
+      description: "免费在线纹理图集和精灵图生成器。将多个精灵打包到优化的图集中，支持导出 JSON 数据。",
     },
-    lastModified: new Date("2025-01-01"),
+    lastModified: new Date("2026-02-08"),
+    priority: 0.8,
   },
 ];
 
@@ -65,14 +70,8 @@ export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
     {
       url: baseUrl,
       lastModified: new Date(),
-      changeFrequency: "daily",
-      priority: 1,
-    },
-    {
-      url: `${baseUrl}/tools`,
-      lastModified: new Date(),
       changeFrequency: "weekly",
-      priority: 0.9,
+      priority: 1,
     },
   ];
 
@@ -80,7 +79,7 @@ export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
     url: `${baseUrl}${tool.path}`,
     lastModified: tool.lastModified,
     changeFrequency: "weekly" as const,
-    priority: 0.8,
+    priority: tool.priority,
   }));
 
   return [...staticPages, ...toolPages];

src/components/seo/StructuredData.tsx

@@ -37,14 +37,6 @@ export function WebSiteStructuredData({ lang = "en" }: WebSiteProps) {
       keywords:
         "image compression, image converter, WebP converter, PNG optimizer, video converter, video to frame sequence, audio compression, texture atlas, sprite sheet generator, game development tools, browser-based tools",
       inLanguage: "en-US",
-      potentialAction: {
-        "@type": "SearchAction",
-        target: {
-          "@type": "EntryPoint",
-          urlTemplate: `${baseUrl}/search?q={search_term_string}`,
-        },
-        "query-input": "required name=search_term_string",
-      },
     },
     zh: {
       name: "KYMR.TOP",
@@ -155,3 +147,34 @@ export function SoftwareApplicationStructuredData({
     />
   );
 }
+
+interface BreadcrumbItem {
+  name: string;
+  url: string;
+}
+
+interface BreadcrumbProps {
+  items: BreadcrumbItem[];
+}
+
+export function BreadcrumbStructuredData({ items }: BreadcrumbProps) {
+  const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || "https://kymr.top";
+
+  const data = {
+    "@context": "https://schema.org",
+    "@type": "BreadcrumbList",
+    itemListElement: items.map((item, index) => ({
+      "@type": "ListItem",
+      position: index + 1,
+      name: item.name,
+      item: `${baseUrl}${item.url}`,
+    })),
+  };
+
+  return (
+    <script
+      type="application/ld+json"
+      dangerouslySetInnerHTML={{ __html: JSON.stringify(data) }}
+    />
+  );
+}