diff --git a/.travis.yml b/.travis.yml
index e4d141e..8ee77d1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,7 +20,7 @@ before_install:
   - if [[ "$BOARD" =~ "esp32:esp32:" ]]; then
       arduino --install-boards esp32:esp32;
     fi
-  - arduino --install-library PubSubClient,PageBuilder:1.1.1
+  - arduino --install-library PubSubClient,PageBuilder:1.2.0
   - buildExampleSketch() { arduino --verbose-build --verify --board $BOARD $PWD/examples/$1/$1.ino; }
 install:
   - mkdir -p ~/Arduino/libraries
diff --git a/keywords.txt b/keywords.txt
index 5b661b7..6560b48 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -9,6 +9,7 @@ AutoConnectButton	KEYWORD1
 AutoConnectCheckbox	KEYWORD1
 AutoConnectElement	KEYWORD1
 AutoConnectInput	KEYWORD1
+AutoConnectRadio    KEYWORD1
 AutoConnectSelect	KEYWORD1
 AutoConnectSubmit	KEYWORD1
 AutoConnectText	KEYWORD1
@@ -54,6 +55,7 @@ ACButton	PREPROCESSOR
 ACCheckbox	PREPROCESSOR
 ACElement	PREPROCESSOR
 ACInput	PREPROCESSOR
+ACRadio PREPROCESSOR
 ACSelect	PREPROCESSOR
 ACSubmit	PREPROCESSOR
 ACText	PREPROCESSOR
diff --git a/library.json b/library.json
index 9d5cfbb..1a8d7c7 100644
--- a/library.json
+++ b/library.json
@@ -12,7 +12,7 @@
   [
     {
       "name": "PageBuilder",
-      "version": ">=1.1.0"
+      "version": ">=1.2.0"
     }
   ],
   "frameworks": "arduino",
diff --git a/src/AutoConnect.cpp b/src/AutoConnect.cpp
index 13fd9e0..ab887ed 100644
--- a/src/AutoConnect.cpp
+++ b/src/AutoConnect.cpp
@@ -310,6 +310,7 @@ void AutoConnect::_startWebServer() {
   _webServer->onNotFound(std::bind(&AutoConnect::_handleNotFound, this));
   // here, Prepare PageBuilders for captive portal
   _responsePage = new PageBuilder();
+  _responsePage->chunked(PB_ByteStream);
   _responsePage->exitCanHandle(std::bind(&AutoConnect::_classifyHandle, this, std::placeholders::_1, std::placeholders::_2));
   _responsePage->insert(*_webServer);
 
@@ -538,10 +539,11 @@ String AutoConnect::_induceConnect(PageArgument& args) {
     // Read from EEPROM
     AutoConnectCredential credential(_apConfig.boundaryOffset);
     struct station_config entry;
-    AC_DBG("Load credential:%s\n", args.arg(AUTOCONNECT_PARAMID_CRED).c_str());
+//    AC_DBG("Load credential:%s\n", args.arg(AUTOCONNECT_PARAMID_CRED).c_str());
     credential.load(args.arg(AUTOCONNECT_PARAMID_CRED).c_str(), &entry);
     strncpy(reinterpret_cast<char*>(_credential.ssid), reinterpret_cast<const char*>(entry.ssid), sizeof(_credential.ssid));
     strncpy(reinterpret_cast<char*>(_credential.password), reinterpret_cast<const char*>(entry.password), sizeof(_credential.password));
+    AC_DBG("Credential loaded:%s %s\n", _credential.ssid, _credential.password);
   }
   else {
     // Credential had by the post parameter.
diff --git a/src/AutoConnectAux.cpp b/src/AutoConnectAux.cpp
index 7b1ed15..c74399c 100644
--- a/src/AutoConnectAux.cpp
+++ b/src/AutoConnectAux.cpp
@@ -282,50 +282,43 @@ AutoConnectElement* AutoConnectAux::_createElement(const JsonObject& json) {
  * Constructs an AutoConnectAux instance by reading all the
  * AutoConnectElements of the specified URI from the elements defined JSON.
  * @param  in    AutoConnectAux element data which is described by JSON.
- * @param  uri   AutoConnectAux uri to be loaded.
  * @return true  The element collection successfully loaded.
  * @return false Invalid JSON data occurred. 
  */
-bool AutoConnectAux::load(const char* in, const String uri) {
-  DynamicJsonBuffer jsonBuffer;
+bool AutoConnectAux::load(const char* in) {
+//  DynamicJsonBuffer jsonBuffer();
+  const size_t bufferSize = 2*JSON_ARRAY_SIZE(2) + 3*JSON_ARRAY_SIZE(3) + JSON_ARRAY_SIZE(9) + JSON_OBJECT_SIZE(1) + 2*JSON_OBJECT_SIZE(3) + 9*JSON_OBJECT_SIZE(4) + JSON_OBJECT_SIZE(5) + JSON_OBJECT_SIZE(6) + 1080;
+  DynamicJsonBuffer jsonBuffer(bufferSize);
   JsonObject& jb = jsonBuffer.parseObject(in);
-  return _load(jb, uri);
+  return _load(jb);
 }
 
-bool AutoConnectAux::load(const __FlashStringHelper* in, const String uri) {
-  DynamicJsonBuffer jsonBuffer;
+bool AutoConnectAux::load(const __FlashStringHelper* in) {
+//  DynamicJsonBuffer jsonBuffer();
+  const size_t bufferSize = 2*JSON_ARRAY_SIZE(2) + 3*JSON_ARRAY_SIZE(3) + JSON_ARRAY_SIZE(9) + JSON_OBJECT_SIZE(1) + 2*JSON_OBJECT_SIZE(3) + 9*JSON_OBJECT_SIZE(4) + JSON_OBJECT_SIZE(5) + JSON_OBJECT_SIZE(6) + 1080;
+  DynamicJsonBuffer jsonBuffer(bufferSize);
   JsonObject& jb = jsonBuffer.parseObject(in);
-  return _load(jb, uri);
+  return _load(jb);
 }
 
-bool AutoConnectAux::load(Stream& in, const String uri) {
-  DynamicJsonBuffer jsonBuffer;
+bool AutoConnectAux::load(Stream& in) {
+//  DynamicJsonBuffer jsonBuffer();
+  const size_t bufferSize = 2*JSON_ARRAY_SIZE(2) + 3*JSON_ARRAY_SIZE(3) + JSON_ARRAY_SIZE(9) + JSON_OBJECT_SIZE(1) + 2*JSON_OBJECT_SIZE(3) + 9*JSON_OBJECT_SIZE(4) + JSON_OBJECT_SIZE(5) + JSON_OBJECT_SIZE(6) + 1080;
+  DynamicJsonBuffer jsonBuffer(bufferSize);
   JsonObject& jb = jsonBuffer.parseObject(in);
-  return _load(jb, uri);
+  return _load(jb);
 }
 
-bool AutoConnectAux::_load(JsonObject& jb, const String uri) {
-  bool rc = jb.success();
-  if (rc) {
-    JsonArray&  aux = jb[AUTOCONNECT_JSON_KEY_AUX];
-    if ((rc = aux.success())) {
-      rc = false;
-      for (JsonObject& page : aux) {
-        const String  j_uri = page.get<String>(F(AUTOCONNECT_JSON_KEY_URI));
-        if (uri == j_uri) {
-          AC_DBG("Loading %s\n", j_uri.c_str());
-          _title = page.get<String>(F(AUTOCONNECT_JSON_KEY_TITLE));
-          _menu = page.get<bool>(F(AUTOCONNECT_JSON_KEY_MENU));
-          _uriStr = j_uri;
-          setUri(_uriStr.c_str());
-          (void)_loadElement(jb, "*");
-          rc = true;
-          break;
-        }
-      }
-    }
-  }
-  return rc;
+bool AutoConnectAux::_load(JsonObject& jb) {
+  if (!jb.success())
+    return false;
+
+  _title = jb.get<String>(F(AUTOCONNECT_JSON_KEY_TITLE));
+  _uriStr = jb.get<String>(F(AUTOCONNECT_JSON_KEY_URI));
+  _uri = _uriStr.c_str();
+  _menu = jb.get<bool>(F(AUTOCONNECT_JSON_KEY_MENU));
+  (void)_loadElement(jb, "*");
+  return true;
 }
 
 /**
@@ -333,7 +326,7 @@ bool AutoConnectAux::_load(JsonObject& jb, const String uri) {
  * described by JSON. Usually, the Stream is specified a storm file of
  * SD or SPIFFS. The Stream must be opened before invoking the function.
  * @param  in    Reference of the Stream which contains the parameter
- * file described by JSON.
+ * data described by JSON.
  * @param  name  The element name to be loaded. '*'specifies that all
  * elements are to be loaded.
  * @return A reference of loaded AutoConnectElement instance.
@@ -363,41 +356,31 @@ AutoConnectElement& AutoConnectAux::_loadElement(JsonObject& jb, const String na
   if (!jb.success())
     return _nullElement();
 
-  JsonArray&  aux = jb[AUTOCONNECT_JSON_KEY_AUX];
-  if (!aux.success())
-    return _nullElement();
-
-  for (JsonObject& page : aux) {
-    if (page[AUTOCONNECT_JSON_KEY_URI].as<String>() == String(uri())) {
-      JsonArray& element = page[AUTOCONNECT_JSON_KEY_ELEMENT];
-      for (JsonObject& elm : element) {
-        String  elmName = elm.get<String>(F(AUTOCONNECT_JSON_KEY_NAME));
-        if (wc || name.equalsIgnoreCase(elmName)) {
-          // The specified element is defined in the JSON stream.
-          // Loads from JSON object.
-          const String  inType = elm[AUTOCONNECT_JSON_KEY_TYPE].as<String>();
-          auxElm = _getElement(elmName);
-          // The element is not created yet, create new one.
-          if (!auxElm) {
-            if ((auxElm = _createElement(elm))) {
-              AC_DBG("%s<%d> of %s created\n", elmName.c_str(), (int)(auxElm->typeOf()), uri());
-              add(*auxElm);   // Insert to AutoConnect
-            }
-            else {
-              AC_DBG("%s unknown element type\n", elmName.c_str());
-              continue;
-            }
-          }
-          if (auxElm->loadElement(elm)) {
-            AC_DBG("%s<%d> of %s loaded\n", auxElm->name.c_str(), (int)auxElm->typeOf(), uri());
-          }
-          else {
-            // Element type mismatch
-            AC_DBG("Type of %s element mismatched\n", elmName.c_str());
-            continue;
-          }
+  JsonArray& elements = jb[AUTOCONNECT_JSON_KEY_ELEMENT];
+  for (JsonObject& element : elements) {
+    String  elmName = element.get<String>(F(AUTOCONNECT_JSON_KEY_NAME));
+    if (wc || name.equalsIgnoreCase(elmName)) {
+      // The specified element is defined in the JSON stream.
+      // Loads from JSON object.
+      auxElm = _getElement(elmName);
+      // The element is not created yet, create new one.
+      if (!auxElm) {
+        if ((auxElm = _createElement(element))) {
+          AC_DBG("%s<%d> of %s created\n", elmName.c_str(), (int)(auxElm->typeOf()), uri());
+          add(*auxElm);   // Insert to AutoConnect
+        }
+        else {
+          AC_DBG("%s unknown element type\n", elmName.c_str());
+          continue;
         }
       }
+      if (auxElm->loadElement(element))
+        AC_DBG("%s<%d> of %s loaded\n", auxElm->name.c_str(), (int)auxElm->typeOf(), uri());
+      else {
+        // Element type mismatch
+        AC_DBG("Type of %s element mismatched\n", elmName.c_str());
+        continue;
+      }
     }
   }
   return auxElm ? *auxElm : _nullElement();
@@ -416,12 +399,12 @@ size_t AutoConnectAux::saveElement(Stream& out, const AutoConnectElement& elemen
   if (!jb.success())
     return 0;
 
-  JsonArray&  aux = jb[AUTOCONNECT_JSON_KEY_AUX];
+  JsonArray&  aux = jb["aux"];
   if (!aux.success())
     return 0;
 
   for (JsonObject& page : aux) {
-    if (page["uri"].as<String>() == String(uri())) {
+    if (page["aux"].as<String>() == String(uri())) {
       JsonArray& element_j = page[AUTOCONNECT_JSON_KEY_ELEMENT];
       for (JsonObject& elm : element_j) {
         if (elm[AUTOCONNECT_JSON_KEY_NAME].as<String>() == element.name) {
diff --git a/src/AutoConnectAux.h b/src/AutoConnectAux.h
index eb95364..e935688 100644
--- a/src/AutoConnectAux.h
+++ b/src/AutoConnectAux.h
@@ -60,9 +60,9 @@ class AutoConnectAux : public PageBuilder {
   void  on(const AuxHandlerFunctionT handler, const AutoConnectExitOrder_t order = AC_EXIT_AHEAD) { _handler = handler; _order = order; }   /**< Set user handler */
 
 #ifdef AUTOCONNECT_USE_JSON
-  bool load(const char* in, const String uri);
-  bool load(const __FlashStringHelper* in, const String uri);
-  bool load(Stream& in, const String uri);
+  bool load(const char* in);
+  bool load(const __FlashStringHelper* in);
+  bool load(Stream& in);
   AutoConnectElement& loadElement(const char* in, const String name = "*");
   AutoConnectElement& loadElement(const __FlashStringHelper* in, const String name = "*");
   AutoConnectElement& loadElement(Stream& in, const String name = "*");
@@ -78,7 +78,7 @@ class AutoConnectAux : public PageBuilder {
   const String  _injectMenu(PageArgument& args);
 
 #ifdef AUTOCONNECT_USE_JSON
-  bool _load(JsonObject& in, const String uri);
+  bool _load(JsonObject& in);
   AutoConnectElement& _loadElement(JsonObject& in, const String name);
   AutoConnectElement* _createElement(const JsonObject& json);
   AutoConnectElement* _getElement(const String name);
diff --git a/src/AutoConnectElementBasis.h b/src/AutoConnectElementBasis.h
index f26cf26..37d66ed 100644
--- a/src/AutoConnectElementBasis.h
+++ b/src/AutoConnectElementBasis.h
@@ -48,7 +48,7 @@ class AutoConnectElementBasis {
   String  name;       /**< Element name */
   String  value;      /**< Element value */
 
-protected:
+ protected:
   ACElement_t _type;  /**< Element type identifier */
 };
 
@@ -119,17 +119,17 @@ class AutoConnectInputBasis : virtual public AutoConnectElementBasis {
  */
 class AutoConnectRadioBasis : virtual public AutoConnectElementBasis {
  public:
-  explicit AutoConnectRadioBasis(const char* name = "", std::vector<String> values = {}, const char* label = "", const ACArrange_t order = AC_Vertical, const uint8_t checked = 0) : AutoConnectElementBasis(name, ""), _values(values), label(label), order(order), checked(checked) {
+  explicit AutoConnectRadioBasis(const char* name = "", std::vector<String> values = {}, const char* label = "", const ACArrange_t order = AC_Vertical, const uint8_t checked = 0) : AutoConnectElementBasis(name, ""), label(label), order(order), checked(checked), _values(values) {
     _type = AC_Radio;
   }
   virtual ~AutoConnectRadioBasis() {}
   const String  toHTML(void) const;
-  void  option(const String value) { _values.push_back(value); }
+  void  add(const String value) { _values.push_back(value); }
   void  empty(void) { _values.clear(); }
 
   String      label;    /**< A label for a subsequent radio buttons */
   ACArrange_t order;    /**< layout order */
-  uint8_t     checked;  /**< Index of check marked item */          
+  uint8_t     checked;  /**< Index of check marked item */
 
  protected:
   std::vector<String> _values; /**< Items in a group */
@@ -145,12 +145,12 @@ class AutoConnectRadioBasis : virtual public AutoConnectElementBasis {
  */
 class AutoConnectSelectBasis : virtual public AutoConnectElementBasis {
  public:
-   explicit AutoConnectSelectBasis(const char* name = "", std::vector<String> options = {}, const char* label = "") : AutoConnectElementBasis(name, ""), label(String(label)), _options(options) {
+  explicit AutoConnectSelectBasis(const char* name = "", std::vector<String> options = {}, const char* label = "") : AutoConnectElementBasis(name, ""), label(String(label)), _options(options) {
     _type = AC_Select;
   }
   virtual ~AutoConnectSelectBasis() {}
   const String  toHTML(void) const;
-  void  option(const String value) { _options.push_back(value); }
+  void  add(const String option) { _options.push_back(option); }
   void  empty(void) { _options.clear(); }
 
   String  label;                /**< A label for a subsequent input box */
diff --git a/src/AutoConnectElementBasisImpl.h b/src/AutoConnectElementBasisImpl.h
index c550516..1a3d171 100644
--- a/src/AutoConnectElementBasisImpl.h
+++ b/src/AutoConnectElementBasisImpl.h
@@ -69,15 +69,17 @@ const String AutoConnectInputBasis::toHTML(void) const {
 const String AutoConnectRadioBasis::toHTML(void) const {
   String  html = String();
 
-  if (label.length())
-    html = String(FPSTR("<label for=\"")) + name + String("\">") + label + String(FPSTR("</label>"));
-  if (order == AC_Vertical)
-    html += String("<br>");
+  if (label.length()) {
+    html = label;
+    if (order == AC_Vertical)
+      html += String("<br>");
+  }
   for (std::size_t n = 0; n < _values.size(); n++) {
-    html += String(FPSTR("<input type=\"radio\" id=\"")) + name + String(FPSTR("\" name=\"")) + name + String(FPSTR("\" value=\"")) + _values[n] + String("\"");
+    String value = _values[n];
+    html += String(FPSTR("<input type=\"radio\" name=\"")) + name + String(FPSTR("\" id=\"")) + value + String(FPSTR("\" value=\"")) + value + String("\"");
     if (n == checked - 1)
       html += String(FPSTR(" checked"));
-    html += String(">") + _values[n];
+    html += String(FPSTR("><label for=\"")) + value + String("\">") + value + String(FPSTR("</label>"));
     if (order == AC_Vertical)
       html += String("<br>");
   }
@@ -96,14 +98,14 @@ const String AutoConnectSelectBasis::toHTML(void) const {
   String  html = String();
 
   if (label.length())
-    html = String(FPSTR("<label>")) + label + String(FPSTR("</label>"));
-  html += String(FPSTR("<select name=\"")) + name + String("\">");
+    html = String(FPSTR("<label for=\"")) + name + String("\">") + label + String(FPSTR("</label>"));
+  html += String(FPSTR("<select name=\"")) + name + String("\" id=\"") + name + String("\">");
   std::size_t n = _options.size();
   if (n) {
     for (std::size_t n = 0; n < _options.size(); n++)
       html += String(FPSTR("<option value=\"")) + _options[n] + "\">" + _options[n] + String(FPSTR("</option>"));
   }
-  html += String(FPSTR("</select><br>"));
+  html += String(FPSTR("</select>"));
   return html;
 }
 
diff --git a/src/AutoConnectElementJson.h b/src/AutoConnectElementJson.h
index d2eb3fd..075c49c 100644
--- a/src/AutoConnectElementJson.h
+++ b/src/AutoConnectElementJson.h
@@ -15,7 +15,6 @@
 
 #define AUTOCONNECT_JSON_KEY_ACTION      "action"
 #define AUTOCONNECT_JSON_KEY_ARRANGE     "arrange"
-#define AUTOCONNECT_JSON_KEY_AUX         "aux"
 #define AUTOCONNECT_JSON_KEY_CHECKED     "checked"
 #define AUTOCONNECT_JSON_KEY_ELEMENT     "element"
 #define AUTOCONNECT_JSON_KEY_HORIZONTAL  "horizontal"
@@ -28,7 +27,7 @@
 #define AUTOCONNECT_JSON_KEY_TYPE        "type"
 #define AUTOCONNECT_JSON_KEY_URI         "uri"
 #define AUTOCONNECT_JSON_KEY_VALUE       "value"
-#define AUTOCONNECT_JSON_KEY_VERTICAL    "vertival"
+#define AUTOCONNECT_JSON_KEY_VERTICAL    "vertical"
 #define AUTOCONNECT_JSON_TYPE_ACBUTTON   "ACButton"
 #define AUTOCONNECT_JSON_TYPE_ACCHECKBOX "ACCheckBox"
 #define AUTOCONNECT_JSON_TYPE_ACELEMENT  "ACElement"
diff --git a/src/AutoConnectElementJsonImpl.h b/src/AutoConnectElementJsonImpl.h
index afc83e7..4c15dd6 100644
--- a/src/AutoConnectElementJsonImpl.h
+++ b/src/AutoConnectElementJsonImpl.h
@@ -105,7 +105,7 @@ bool AutoConnectRadioJson::loadElement(const JsonObject& json) {
     empty();
     JsonArray& optionArray = json[AUTOCONNECT_JSON_KEY_VALUE];
     for (auto value : optionArray)
-      option(value.as<String>());
+      add(value.as<String>());
     return true;
   }
   return false;
@@ -125,7 +125,7 @@ bool AutoConnectSelectJson::loadElement(const JsonObject& json) {
     empty();
     JsonArray& optionArray = json[AUTOCONNECT_JSON_KEY_OPTION];
     for (auto value : optionArray)
-      option(value.as<String>());
+      add(value.as<String>());
     return true;
   }
   return false;