diff --git a/lightrag/api/static/index.html b/lightrag/api/static/index.html
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+++ b/lightrag/api/static/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>RAG WebUI</title>
+  <script src="https://cdn.tailwindcss.com"></script>
+</head>
+<body class="bg-gray-100 min-h-screen flex flex-col items-center justify-center p-4">
+  <div class="w-full max-w-4xl bg-white shadow-md rounded-lg p-6">
+    <h1 class="text-2xl font-bold text-gray-800 mb-4">RAG WebUI</h1>
+
+    <!-- File Upload Section -->
+    <div class="mb-6">
+      <h2 class="text-lg font-semibold text-gray-700 mb-2">Upload Files</h2>
+      <form id="uploadForm" class="flex flex-col gap-4">
+        <input type="file" id="fileInput" multiple class="block w-full text-sm text-gray-500 file:mr-4 file:py-2 file:px-4 file:rounded file:border-0 file:text-sm file:font-semibold file:bg-blue-50 file:text-blue-700 hover:file:bg-blue-100">
+        <button type="submit" class="bg-blue-500 text-white px-4 py-2 rounded hover:bg-blue-600">Upload</button>
+      </form>
+      <div id="uploadStatus" class="mt-2 text-sm text-gray-600"></div>
+    </div>
+
+    <!-- Query Section -->
+    <div class="mb-6">
+      <h2 class="text-lg font-semibold text-gray-700 mb-2">Query</h2>
+      <form id="queryForm" class="flex flex-col gap-4">
+        <textarea id="queryInput" rows="4" class="w-full p-2 border rounded focus:outline-none focus:ring-2 focus:ring-blue-500" placeholder="Enter your query here..."></textarea>
+        <button type="submit" class="bg-green-500 text-white px-4 py-2 rounded hover:bg-green-600">Submit Query</button>
+      </form>
+      <div id="queryResponse" class="mt-4 p-4 bg-gray-50 border rounded text-gray-700"></div>
+    </div>
+  </div>
+
+  <script>
+    // File Upload Handler
+    const uploadForm = document.getElementById('uploadForm');
+    const fileInput = document.getElementById('fileInput');
+    const uploadStatus = document.getElementById('uploadStatus');
+
+    uploadForm.addEventListener('submit', async (e) => {
+      e.preventDefault();
+      const files = fileInput.files;
+      if (files.length === 0) {
+        uploadStatus.textContent = "Please select at least one file.";
+        return;
+      }
+
+      const formData = new FormData();
+      for (const file of files) {
+        formData.append('file', file);
+      }
+
+      uploadStatus.textContent = "Uploading...";
+      try {
+        const response = await fetch('/documents/upload', {
+          method: 'POST',
+          body: formData,
+        });
+
+        if (response.ok) {
+          const data = await response.json();
+          uploadStatus.textContent = `Upload successful! Indexed ${data.total_documents} documents.`;
+        } else {
+          const error = await response.json();
+          uploadStatus.textContent = `Error: ${error.detail}`;
+        }
+      } catch (err) {
+        uploadStatus.textContent = `Error: ${err.message}`;
+      }
+    });
+
+    // Query Handler
+    const queryForm = document.getElementById('queryForm');
+    const queryInput = document.getElementById('queryInput');
+    const queryResponse = document.getElementById('queryResponse');
+
+    queryForm.addEventListener('submit', async (e) => {
+      e.preventDefault();
+      const query = queryInput.value.trim();
+      if (!query) {
+        queryResponse.textContent = "Please enter a query.";
+        return;
+      }
+
+      queryResponse.textContent = "Processing...";
+      try {
+        const response = await fetch('/query', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ query }),
+        });
+
+        if (response.ok) {
+          const data = await response.json();
+          queryResponse.textContent = `Response: ${data.result}`;
+        } else {
+          const error = await response.json();
+          queryResponse.textContent = `Error: ${error.detail}`;
+        }
+      } catch (err) {
+        queryResponse.textContent = `Error: ${err.message}`;
+      }
+    });
+  </script>
+</body>
+</html>
