diff --git a/index.html b/index.html
index eb87481..e27595d 100644
--- a/index.html
+++ b/index.html
@@ -15,25 +15,47 @@
     
     <!-- SEO Meta Tags -->
     <meta name="description" content="MD2DOC-Evolution - A professional Markdown to Word (Docx) converter designed for technical book publishing. Supports custom styling, callouts, and code formatting." />
-    <meta name="keywords" content="Markdown, Docx, Converter, Technical Writing, Book Publishing, Word, EricHuang" />
+    <meta name="keywords" content="Markdown, Docx, Converter, Technical Writing, Book Publishing, Word, EricHuang, Markdown轉Word, 技術文件, 排版工具, 電子書製作, 寫書軟體" />
     <meta name="author" content="EricHuang" />
+    <link rel="canonical" href="https://eric861129.github.io/MD2DOC-Evolution/" />
     
     <!-- Open Graph / Facebook -->
     <meta property="og:type" content="website" />
     <meta property="og:url" content="https://eric861129.github.io/MD2DOC-Evolution/" />
-    <meta property="og:title" content="MD2DOC-Evolution | 專業技術書稿轉檔" />
-    <meta property="og:description" content="Professional Markdown to Docx converter for technical writers. Convert your docs with style." />
-    <meta property="og:image" content="https://eric861129.github.io/MD2DOC-Evolution/docs/images/preview.jpg" />
+    <meta property="og:title" content="MD2DOC-Evolution | Markdown to Word Converter | 專業技術書稿轉檔" />
+    <meta property="og:description" content="Professional Markdown to Docx converter for technical writers. Convert your docs with style. 專為技術寫作設計的 Markdown 轉 Word 工具。" />
+    <meta property="og:image" content="https://eric861129.github.io/MD2DOC-Evolution/docs/images/1.jpg" />
 
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     <meta property="twitter:card" content="summary_large_image" />
     <meta property="twitter:url" content="https://eric861129.github.io/MD2DOC-Evolution/" />
-    <meta property="twitter:title" content="MD2DOC-Evolution | 專業技術書稿轉檔" />
+    <meta property="twitter:title" content="MD2DOC-Evolution | Markdown to Word Converter" />
     <meta property="twitter:description" content="Professional Markdown to Docx converter for technical writers. Convert your docs with style." />
-    <meta property="twitter:image" content="https://eric861129.github.io/MD2DOC-Evolution/docs/images/preview.jpg" />
+    <meta property="twitter:image" content="https://eric861129.github.io/MD2DOC-Evolution/docs/images/1.jpg" />
+
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+      "name": "MD2DOC-Evolution",
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+      "applicationCategory": "ProductivityApplication",
+      "offers": {
+        "@type": "Offer",
+        "price": "0",
+        "priceCurrency": "USD"
+      },
+      "description": "A professional Markdown to Word (Docx) converter designed for technical book publishing with Mermaid charts and code highlighting support.",
+      "author": {
+          "@type": "Person",
+          "name": "EricHuang"
+      }
+    }
+    </script>
 
     <link rel="icon" type="image/svg+xml" href="/MD2DOC-Evolution/logo.svg" />
-    <title>MD2DOC-Evolution | 專業技術書稿轉檔</title>
+    <title>MD2DOC-Evolution | Markdown to Word Converter | 專業技術書稿轉檔</title>
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