add image to pdf tool

index.html

@@ -493,6 +493,15 @@
           <div class="tooltip">URL 编解码</div>
         </div>
 
+        <div class="tool-item" data-tool="image2pdf">
+          <div class="tool-icon">📷</div>
+          <div class="tool-info">
+            <h3>图片转PDF</h3>
+            <p>将多张图片合并生成PDF文档，支持拖拽排序和自定义设置</p>
+          </div>
+          <div class="tooltip">图片转PDF</div>
+        </div>
+
         <div class="tool-item" data-tool="other">
           <div class="tool-icon">⚙️</div>
           <div class="tool-info">
@@ -604,6 +613,11 @@
           url: "url_encoder.html",
           hash: "#url",
         },
+        image2pdf: {
+          title: "图片转PDF",
+          url: "image_to_pdf.html",
+          hash: "#image2pdf",
+        },
         other: {
           title: "其他功能",
           url: "other_function.html",