diff --git a/main/ota_server.c b/main/ota_server.c
index 5515d7a..31b7607 100644
--- a/main/ota_server.c
+++ b/main/ota_server.c
@@ -21,157 +21,6 @@
 
 static const char *TAG = "OTA_SERVER";
 
-// HTML page for OTA update
-static const char *ota_html = 
-"<!DOCTYPE html>"
-"<html>"
-"<head>"
-"<title>ESP32 OTA Update</title>"
-"<meta name='viewport' content='width=device-width, initial-scale=1'>"
-"<style>"
-"body { font-family: Arial, sans-serif; margin: 40px; background-color: #f0f0f0; }"
-".container { max-width: 600px; margin: 0 auto; background-color: white; padding: 20px; border-radius: 10px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }"
-"h1 { color: #333; text-align: center; }"
-".info { background-color: #e7f3ff; border-left: 4px solid #2196F3; padding: 10px; margin-bottom: 20px; }"
-".upload-area { border: 2px dashed #ccc; border-radius: 5px; padding: 30px; text-align: center; margin: 20px 0; }"
-".upload-area.dragover { background-color: #e7f3ff; border-color: #2196F3; }"
-"input[type='file'] { display: none; }"
-".btn { background-color: #4CAF50; color: white; padding: 12px 24px; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; }"
-".btn:hover { background-color: #45a049; }"
-".btn:disabled { background-color: #cccccc; cursor: not-allowed; }"
-".progress { width: 100%; background-color: #f0f0f0; border-radius: 4px; margin-top: 20px; display: none; }"
-".progress-bar { width: 0%; height: 30px; background-color: #4CAF50; border-radius: 4px; text-align: center; line-height: 30px; color: white; transition: width 0.3s; }"
-".status { margin-top: 20px; padding: 10px; border-radius: 4px; display: none; }"
-".status.success { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }"
-".status.error { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }"
-".file-info { margin-top: 10px; font-style: italic; color: #666; }"
-"</style>"
-"</head>"
-"<body>"
-"<div class='container'>"
-"<h1>ESP32 OTA Update</h1>"
-"<div class='info'>"
-"<strong>Current Version:</strong> <span id='version'>%s</span><br>"
-"<strong>Free Space:</strong> <span id='free-space'>%u KB</span>"
-"</div>"
-"<div class='upload-area' id='upload-area'>"
-"<p>Drag and drop firmware file here or click to select</p>"
-"<input type='file' id='file' accept='.bin'>"
-"<button class='btn' onclick='document.getElementById(\"file\").click()'>Select File</button>"
-"<div class='file-info' id='file-info'></div>"
-"</div>"
-"<button class='btn' id='upload-btn' onclick='uploadFirmware()' disabled>Upload Firmware</button>"
-"<div class='progress' id='progress'>"
-"<div class='progress-bar' id='progress-bar'>0%%</div>"
-"</div>"
-"<div class='status' id='status'></div>"
-"</div>"
-"<script>"
-"console.log('OTA page loaded');"
-"let selectedFile = null;"
-"const uploadArea = document.getElementById('upload-area');"
-"const fileInput = document.getElementById('file');"
-"const uploadBtn = document.getElementById('upload-btn');"
-"const progressDiv = document.getElementById('progress');"
-"const progressBar = document.getElementById('progress-bar');"
-"const statusDiv = document.getElementById('status');"
-"const fileInfo = document.getElementById('file-info');"
-""
-"// File input change handler"
-"fileInput.addEventListener('change', function(e) {"
-"  console.log('File input changed', e.target.files);"
-"  if (e.target.files.length > 0) {"
-"    handleFile(e.target.files[0]);"
-"  }"
-"});"
-""
-"// Drag and drop handlers"
-"uploadArea.addEventListener('dragover', function(e) {"
-"  e.preventDefault();"
-"  uploadArea.classList.add('dragover');"
-"});"
-""
-"uploadArea.addEventListener('dragleave', function() {"
-"  uploadArea.classList.remove('dragover');"
-"});"
-""
-"uploadArea.addEventListener('drop', function(e) {"
-"  e.preventDefault();"
-"  uploadArea.classList.remove('dragover');"
-"  const files = e.dataTransfer.files;"
-"  console.log('Files dropped:', files);"
-"  if (files.length > 0) {"
-"    handleFile(files[0]);"
-"  }"
-"});"
-""
-"function handleFile(file) {"
-"  console.log('Handling file:', file.name, file.size);"
-"  if (file.name.toLowerCase().endsWith('.bin')) {"
-"    selectedFile = file;"
-"    fileInfo.textContent = 'Selected: ' + file.name + ' (' + (file.size/1024).toFixed(2) + ' KB)';"
-"    uploadBtn.disabled = false;"
-"    uploadBtn.textContent = 'Upload ' + file.name;"
-"  } else {"
-"    alert('Please select a .bin file');"
-"    selectedFile = null;"
-"    fileInfo.textContent = '';"
-"    uploadBtn.disabled = true;"
-"    uploadBtn.textContent = 'Upload Firmware';"
-"  }"
-"}"
-""
-"function showStatus(message, type) {"
-"  statusDiv.textContent = message;"
-"  statusDiv.className = 'status ' + type;"
-"  statusDiv.style.display = 'block';"
-"}"
-""
-"function uploadFirmware() {"
-"  if (!selectedFile) {"
-"    console.error('No file selected');"
-"    return;"
-"  }"
-"  "
-"  console.log('Starting upload...');"
-"  const xhr = new XMLHttpRequest();"
-"  uploadBtn.disabled = true;"
-"  progressDiv.style.display = 'block';"
-"  statusDiv.style.display = 'none';"
-"  "
-"  xhr.upload.addEventListener('progress', function(e) {"
-"    if (e.lengthComputable) {"
-"      const percent = Math.round((e.loaded / e.total) * 100);"
-"      progressBar.style.width = percent + '%%';"
-"      progressBar.textContent = percent + '%%';"
-"      console.log('Upload progress:', percent);"
-"    }"
-"  });"
-"  "
-"  xhr.addEventListener('load', function() {"
-"    console.log('Upload complete, status:', xhr.status);"
-"    if (xhr.status === 200) {"
-"      showStatus('Firmware uploaded successfully! Device will restart...', 'success');"
-"      setTimeout(function() { location.reload(); }, 5000);"
-"    } else {"
-"      showStatus('Upload failed: ' + xhr.responseText, 'error');"
-"      uploadBtn.disabled = false;"
-"    }"
-"  });"
-"  "
-"  xhr.addEventListener('error', function() {"
-"    console.error('Upload error');"
-"    showStatus('Upload error occurred', 'error');"
-"    uploadBtn.disabled = false;"
-"  });"
-"  "
-"  xhr.open('POST', '/update');"
-"  xhr.send(selectedFile);"
-"}"
-"</script>"
-"</body>"
-"</html>";
-
 // Server handle
 static httpd_handle_t s_server = NULL;
 
@@ -208,20 +57,179 @@ static esp_err_t index_handler(httpd_req_t *req)
     }
     esp_partition_iterator_release(it);
     
-    // Allocate buffer for response
-    size_t response_size = strlen(ota_html) + 64;
-    char *response = malloc(response_size);
-    if (!response) {
-        httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR, "Memory allocation failed");
-        return ESP_FAIL;
-    }
-    
-    snprintf(response, response_size, ota_html, s_version, free_space / 1024);
-    
+    // Send response in chunks
     httpd_resp_set_type(req, "text/html");
-    httpd_resp_send(req, response, strlen(response));
     
-    free(response);
+    // Part 1: HTML head and styles
+    const char *html_part1 = 
+        "<!DOCTYPE html>"
+        "<html>"
+        "<head>"
+        "<title>ESP32 OTA Update</title>"
+        "<meta name='viewport' content='width=device-width, initial-scale=1'>"
+        "<style>"
+        "body { font-family: Arial, sans-serif; margin: 40px; background-color: #f0f0f0; }"
+        ".container { max-width: 600px; margin: 0 auto; background-color: white; padding: 20px; border-radius: 10px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }"
+        "h1 { color: #333; text-align: center; }"
+        ".info { background-color: #e7f3ff; border-left: 4px solid #2196F3; padding: 10px; margin-bottom: 20px; }"
+        ".upload-area { border: 2px dashed #ccc; border-radius: 5px; padding: 30px; text-align: center; margin: 20px 0; }"
+        ".upload-area.dragover { background-color: #e7f3ff; border-color: #2196F3; }"
+        "input[type='file'] { display: none; }"
+        ".btn { background-color: #4CAF50; color: white; padding: 12px 24px; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; }"
+        ".btn:hover { background-color: #45a049; }"
+        ".btn:disabled { background-color: #cccccc; cursor: not-allowed; }"
+        ".progress { width: 100%; background-color: #f0f0f0; border-radius: 4px; margin-top: 20px; display: none; }"
+        ".progress-bar { width: 0%; height: 30px; background-color: #4CAF50; border-radius: 4px; text-align: center; line-height: 30px; color: white; transition: width 0.3s; }"
+        ".status { margin-top: 20px; padding: 10px; border-radius: 4px; display: none; }"
+        ".status.success { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }"
+        ".status.error { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }"
+        ".file-info { margin-top: 10px; font-style: italic; color: #666; }"
+        "</style>"
+        "</head>"
+        "<body>"
+        "<div class='container'>"
+        "<h1>ESP32 OTA Update</h1>";
+    
+    httpd_resp_send_chunk(req, html_part1, strlen(html_part1));
+    
+    // Part 2: Info section with dynamic content
+    char info_buf[256];
+    snprintf(info_buf, sizeof(info_buf),
+        "<div class='info'>"
+        "<strong>Current Version:</strong> <span id='version'>%s</span><br>"
+        "<strong>Free Space:</strong> <span id='free-space'>%lu KB</span>"
+        "</div>", s_version, (unsigned long)(free_space / 1024));
+    
+    httpd_resp_send_chunk(req, info_buf, strlen(info_buf));
+    
+    // Part 3: Upload area
+    const char *html_part3 = 
+        "<div class='upload-area' id='upload-area'>"
+        "<p>Drag and drop firmware file here or click to select</p>"
+        "<input type='file' id='file' accept='.bin'>"
+        "<button class='btn' onclick='document.getElementById(\"file\").click()'>Select File</button>"
+        "<div class='file-info' id='file-info'></div>"
+        "</div>"
+        "<button class='btn' id='upload-btn' onclick='uploadFirmware()' disabled>Upload Firmware</button>"
+        "<div class='progress' id='progress'>"
+        "<div class='progress-bar' id='progress-bar'>0%</div>"
+        "</div>"
+        "<div class='status' id='status'></div>"
+        "</div>";
+    
+    httpd_resp_send_chunk(req, html_part3, strlen(html_part3));
+    
+    // Part 4: JavaScript
+    const char *html_part4 = 
+        "<script>"
+        "console.log('OTA page loaded');"
+        "let selectedFile = null;"
+        "const uploadArea = document.getElementById('upload-area');"
+        "const fileInput = document.getElementById('file');"
+        "const uploadBtn = document.getElementById('upload-btn');"
+        "const progressDiv = document.getElementById('progress');"
+        "const progressBar = document.getElementById('progress-bar');"
+        "const statusDiv = document.getElementById('status');"
+        "const fileInfo = document.getElementById('file-info');"
+        ""
+        "fileInput.addEventListener('change', function(e) {"
+        "  console.log('File input changed', e.target.files);"
+        "  if (e.target.files.length > 0) {"
+        "    handleFile(e.target.files[0]);"
+        "  }"
+        "});"
+        ""
+        "uploadArea.addEventListener('dragover', function(e) {"
+        "  e.preventDefault();"
+        "  uploadArea.classList.add('dragover');"
+        "});"
+        ""
+        "uploadArea.addEventListener('dragleave', function() {"
+        "  uploadArea.classList.remove('dragover');"
+        "});"
+        ""
+        "uploadArea.addEventListener('drop', function(e) {"
+        "  e.preventDefault();"
+        "  uploadArea.classList.remove('dragover');"
+        "  const files = e.dataTransfer.files;"
+        "  console.log('Files dropped:', files);"
+        "  if (files.length > 0) {"
+        "    handleFile(files[0]);"
+        "  }"
+        "});"
+        ""
+        "function handleFile(file) {"
+        "  console.log('Handling file:', file.name, file.size);"
+        "  if (file.name.toLowerCase().endsWith('.bin')) {"
+        "    selectedFile = file;"
+        "    fileInfo.textContent = 'Selected: ' + file.name + ' (' + (file.size/1024).toFixed(2) + ' KB)';"
+        "    uploadBtn.disabled = false;"
+        "    uploadBtn.textContent = 'Upload ' + file.name;"
+        "  } else {"
+        "    alert('Please select a .bin file');"
+        "    selectedFile = null;"
+        "    fileInfo.textContent = '';"
+        "    uploadBtn.disabled = true;"
+        "    uploadBtn.textContent = 'Upload Firmware';"
+        "  }"
+        "}"
+        ""
+        "function showStatus(message, type) {"
+        "  statusDiv.textContent = message;"
+        "  statusDiv.className = 'status ' + type;"
+        "  statusDiv.style.display = 'block';"
+        "}"
+        ""
+        "function uploadFirmware() {"
+        "  if (!selectedFile) {"
+        "    console.error('No file selected');"
+        "    return;"
+        "  }"
+        "  "
+        "  console.log('Starting upload...');"
+        "  const xhr = new XMLHttpRequest();"
+        "  uploadBtn.disabled = true;"
+        "  progressDiv.style.display = 'block';"
+        "  statusDiv.style.display = 'none';"
+        "  "
+        "  xhr.upload.addEventListener('progress', function(e) {"
+        "    if (e.lengthComputable) {"
+        "      const percent = Math.round((e.loaded / e.total) * 100);"
+        "      progressBar.style.width = percent + '%';"
+        "      progressBar.textContent = percent + '%';"
+        "      console.log('Upload progress:', percent);"
+        "    }"
+        "  });"
+        "  "
+        "  xhr.addEventListener('load', function() {"
+        "    console.log('Upload complete, status:', xhr.status);"
+        "    if (xhr.status === 200) {"
+        "      showStatus('Firmware uploaded successfully! Device will restart...', 'success');"
+        "      setTimeout(function() { location.reload(); }, 5000);"
+        "    } else {"
+        "      showStatus('Upload failed: ' + xhr.responseText, 'error');"
+        "      uploadBtn.disabled = false;"
+        "    }"
+        "  });"
+        "  "
+        "  xhr.addEventListener('error', function() {"
+        "    console.error('Upload error');"
+        "    showStatus('Upload error occurred', 'error');"
+        "    uploadBtn.disabled = false;"
+        "  });"
+        "  "
+        "  xhr.open('POST', '/update');"
+        "  xhr.send(selectedFile);"
+        "}"
+        "</script>"
+        "</body>"
+        "</html>";
+    
+    httpd_resp_send_chunk(req, html_part4, strlen(html_part4));
+    
+    // Send final chunk to complete response
+    httpd_resp_send_chunk(req, NULL, 0);
+    
     return ESP_OK;
 }
 
