diff --git a/tools/esp8266/app.cpp b/tools/esp8266/app.cpp
index 643a54a7..84fa4ae6 100644
--- a/tools/esp8266/app.cpp
+++ b/tools/esp8266/app.cpp
@@ -53,13 +53,11 @@ void app::loop(void) {
     bool apActive = mWifi->loop();
     mWebInst->loop();
 
-    if(checkTicker(&mUptimeTicker, mUptimeInterval)) {
-        if(millis() - mPrevMillis >= 1000) {
-            mPrevMillis += 1000;
-            mUptimeSecs++;
-            if(0 != mTimestamp)
-                mTimestamp++;
-        }
+    if(millis() - mPrevMillis >= 1000) {
+        mPrevMillis += 1000;
+        mUptimeSecs++;
+        if(0 != mTimestamp)
+            mTimestamp++;
     }
 
     if(checkTicker(&mNtpRefreshTicker, mNtpRefreshInterval)) {
@@ -500,56 +498,6 @@ void app::cbMqtt(char* topic, byte* payload, unsigned int length) {
 }
 
 
-//-----------------------------------------------------------------------------
-String app::getStatistics(void) {
-    String content = F("Receive success: ") + String(mStat.rxSuccess) + "\n";
-    content += F("Receive fail: ") + String(mStat.rxFail) + "\n";
-    content += F("Frames received: ") + String(mStat.frmCnt) + "\n";
-    content += F("Send Cnt: ") + String(mSys->Radio.mSendCnt) + String("\n\n");
-
-    Inverter<> *iv;
-    for(uint8_t i = 0; i < MAX_NUM_INVERTERS; i++) {
-        iv = mSys->getInverterByPos(i);
-        content += F("Inverter #") + String(i) + F(": ");
-        if(NULL != iv) {
-            bool avail = true;
-            content += String(iv->name) + F(" (v") + String(iv->fwVersion) +F(")") + F(" is ");
-            if(!iv->isAvailable(mTimestamp)) {
-                content += F("not ");
-                avail = false;
-            }
-            content += F("available and is ");
-            if(!iv->isProducing(mTimestamp))
-                content += F("not ");
-            content += F("producing\n");
-
-            if(!avail) {
-                if(iv->getLastTs() > 0)
-                    content += F("-> last successful transmission: ") + getDateTimeStr(iv->getLastTs()) + "\n";
-            }
-        }
-        else
-            content += F("n/a\n");
-        }
-
-    if(!mSys->Radio.isChipConnected())
-        content += F("WARNING! your NRF24 module can't be reached, check the wiring and pinout (<a href=\"/setup\">setup</a>)\n");
-
-    if(mShowRebootRequest)
-        content += F("INFO: reboot your ESP to apply all your configuration changes!\n");
-
-    if(!mSettingsValid)
-        content += F("INFO: your settings are invalid, please switch to <a href=\"/setup\">Setup</a> to correct this.\n");
-
-    content += F("MQTT: ");
-    if(!mMqtt.isConnected())
-        content += F("not ");
-    content += F("connected\n");
-
-    return content;
-}
-
-
 //-----------------------------------------------------------------------------
 String app::getJson(void) {
     DPRINTLN(DBG_VERBOSE, F("app::showJson"));
@@ -664,8 +612,6 @@ const char* app::getFieldStateClass(uint8_t fieldId) {
 //-----------------------------------------------------------------------------
 void app::resetSystem(void) {
     mUptimeSecs     = 0;
-    mUptimeTicker   = 0xffffffff;
-    mUptimeInterval = 500; // [ms]
     mPrevMillis     = 0;
 
     mNtpRefreshTicker   = 0;
diff --git a/tools/esp8266/app.h b/tools/esp8266/app.h
index c3c1030a..2d728be5 100644
--- a/tools/esp8266/app.h
+++ b/tools/esp8266/app.h
@@ -62,7 +62,6 @@ class app {
         void cbMqtt(char* topic, byte* payload, unsigned int length);
         void saveValues(void);
         void resetPayload(Inverter<>* iv);
-        String getStatistics(void);
         String getJson(void);
         bool getWifiApActive(void);
 
@@ -135,6 +134,10 @@ class app {
             return false;
         }
 
+        inline bool mqttIsConnected(void) { return mMqtt.isConnected(); }
+        inline bool getSettingsValid(void) { return mSettingsValid; }
+        inline bool getRebootRequestState(void) { return mShowRebootRequest; }
+
         HmSystemType *mSys;
         bool mShouldReboot;
 
@@ -214,8 +217,6 @@ class app {
         }
 
 
-        uint32_t mUptimeTicker;
-        uint16_t mUptimeInterval;
         uint32_t mUptimeSecs;
         uint32_t mPrevMillis;
         uint8_t mHeapStatCnt;
diff --git a/tools/esp8266/html/index.html b/tools/esp8266/html/index.html
index 33a7e3dd..f8a06f6c 100644
--- a/tools/esp8266/html/index.html
+++ b/tools/esp8266/html/index.html
@@ -15,8 +15,14 @@
                 <a href="/setup">Setup</a><br/>
             </p>
             <p><span class="des">Uptime: </span><span id="uptime"></span></p>
-            <p><span class="des">Statistics: </span><pre id="stat"></pre></p>
-            <p>Every {TS}seconds the values are updated</p>
+            <p><span class="des">ESP-Time: </span><span id="date"></span></p>
+            <p>
+                <span class="des">Statistics: </span>
+                <pre id="stat"></pre>
+                <pre id="iv"></pre>
+                <pre id="warn_info"></pre>
+            </p>
+            <p>Every <span id="refresh"></span> seconds the values are updated</p>
 
             <div id="note">
                 This project was started from <a href="https://www.mikrocontroller.net/topic/525778" target="_blank">this discussion. (Mikrocontroller.net)</a><br/>
@@ -35,8 +41,10 @@
             <p class="left"><a href="/update">Update Firmware</a></p>
             <p class="right" id="version"></p>
             <p class="right"><a href="/reboot">Reboot</a></p>
+            <p class="right"><a href="/api">REST API</a></p>
         </div>
         <script type="text/javascript">
+            var intervalSet = false;
             function parseSys(obj) {
                 document.getElementById("version").innerHTML = "Git SHA: " + obj["build"] + " :: " + obj["version"];
 
@@ -49,10 +57,8 @@
                 document.getElementById("uptime").innerHTML = days + " Days, "
                     + ("0"+hrs).substr(-2) + ":"
                     + ("0"+min).substr(-2) + ":"
-                    + ("0"+sec).substr(-2) + "; now: "
-                    + ("0"+date.getHours()).substr(-2) + ":"
-                    + ("0"+date.getMinutes()).substr(-2) + ":"
-                    + ("0"+date.getSeconds()).substr(-2);
+                    + ("0"+sec).substr(-2);
+                document.getElementById("date").innerHTML = date.toLocaleString('de-DE', {timeZone: 'UTC'});
             }
 
             function parseStat(obj) {
@@ -62,11 +68,48 @@
                     + "\nTX Cnt: " + obj["tx_cnt"];
             }
 
-            window.setInterval("getAjax('/api/system', parseSys)", 30000);
-            window.setInterval("getAjax('/api/statistics', parseStat)", 30000);
+            function parseIv(obj) {
+                var html = "";
+                for(var i of obj) {
+                    html += "Inverter #" + i["id"] + ": " + i["name"] + " (v" + i["version"] + ") is ";
+                    if(false == i["is_avail"])
+                        html += "not ";
+                    html += "available and is ";
+                    if(false == i["is_producing"])
+                        html += "not ";
+                    html += "producing\n";
+
+                    if(false == i["is_avail"]) {
+                        var date = new Date(i["ts_last_succes"] * 1000);
+                        html += "-> last successful transmission: " + date.toLocaleString('de-DE', {timeZone: 'UTC'});
+                    }
+
+                }
+                document.getElementById("iv").innerHTML = html;
+            }
+
+            function parseWarnInfo(warn, info) {
+                var html = "";
+                for(var w of warn) {
+                    html += "WARN: " + w + "\n";
+                }
+                for(var i of info) {
+                    html += "INFO: " + i + "\n";
+                }
+                document.getElementById("warn_info").innerHTML = html;
+            }
+
+            function parse(obj) {
+                parseSys(obj["system"]);
+                parseStat(obj["statistics"]);
+                parseIv(obj["inverter"]);
+                parseWarnInfo(obj["warnings"], obj["infos"]);
+                document.getElementById("refresh").innerHTML = obj["refresh_interval"];
+                if(false == intervalSet)
+                    window.setInterval("getAjax('/api/index', parse)", obj["refresh_interval"] * 1000);
+            }
 
-            getAjax("/api/system", parseSys);
-            getAjax("/api/statistics", parseStat);
+            getAjax("/api/index", parse);
         </script>
     </body>
 </html>
diff --git a/tools/esp8266/web.cpp b/tools/esp8266/web.cpp
index 8dc6a046..ffd676c7 100644
--- a/tools/esp8266/web.cpp
+++ b/tools/esp8266/web.cpp
@@ -51,7 +51,6 @@ void web::setup(void) {
     mWeb->on("/setup",          HTTP_GET,  std::bind(&web::onSetup,           this, std::placeholders::_1));
     mWeb->on("/save",           HTTP_ANY,  std::bind(&web::showSave,          this, std::placeholders::_1));
 
-    mWeb->on("/cmdstat",        HTTP_ANY,  std::bind(&web::showStatistics,    this, std::placeholders::_1));
     mWeb->on("/visualization",  HTTP_ANY,  std::bind(&web::showVisualization, this, std::placeholders::_1));
     mWeb->on("/livedata",       HTTP_ANY,  std::bind(&web::showLiveData,      this, std::placeholders::_1));
     mWeb->on("/json",           HTTP_ANY,  std::bind(&web::showJson,          this, std::placeholders::_1));
@@ -319,13 +318,6 @@ void web::showSave(AsyncWebServerRequest *request) {
 }
 
 
-//-----------------------------------------------------------------------------
-void web::showStatistics(AsyncWebServerRequest *request) {
-    DPRINTLN(DBG_VERBOSE, F("web::showStatistics"));
-    request->send(200, F("text/plain"), mMain->getStatistics());
-}
-
-
 //-----------------------------------------------------------------------------
 void web::showVisualization(AsyncWebServerRequest *request) {
     DPRINTLN(DBG_VERBOSE, F("web::showVisualization"));
diff --git a/tools/esp8266/web.h b/tools/esp8266/web.h
index 84e272b8..652bf677 100644
--- a/tools/esp8266/web.h
+++ b/tools/esp8266/web.h
@@ -37,7 +37,6 @@ class web {
         void onSetup(AsyncWebServerRequest *request);
         void showSave(AsyncWebServerRequest *request);
 
-        void showStatistics(AsyncWebServerRequest *request);
         void showVisualization(AsyncWebServerRequest *request);
         void showLiveData(AsyncWebServerRequest *request);
         void showJson(AsyncWebServerRequest *request);
diff --git a/tools/esp8266/webApi.cpp b/tools/esp8266/webApi.cpp
index be5e2ff5..60d1ed2d 100644
--- a/tools/esp8266/webApi.cpp
+++ b/tools/esp8266/webApi.cpp
@@ -46,13 +46,14 @@ void webApi::onApi(AsyncWebServerRequest *request) {
     else if(path == "pinout")        getPinout(root);
     else if(path == "radio")         getRadio(root);
     else if(path == "serial")        getSerial(root);
+    else if(path == "index")         getIndex(root);
     else if(path == "setup")         getSetup(root);
     else
-        root["info"] = "not found"; //root["url"] = request->url();
+        getNotFound(root, F("http://") + request->host() + F("/api/"));
 
     response->setLength();
-    //response->addHeader("Access-Control-Allow-Origin", "*");
-    //response->addHeader("Access-Control-Allow-Headers", "content-type");
+    response->addHeader("Access-Control-Allow-Origin", "*");
+    response->addHeader("Access-Control-Allow-Headers", "content-type");
     request->send(response);
 }
 
@@ -79,7 +80,7 @@ void webApi::getStatistics(JsonObject obj) {
 
 //-----------------------------------------------------------------------------
 void webApi::getInverterList(JsonObject obj) {
-    JsonArray invArr = obj.createNestedArray("inverter");
+    JsonArray invArr = obj.createNestedArray(F("inverter"));
 
     Inverter<> *iv;
     for(uint8_t i = 0; i < MAX_NUM_INVERTERS; i ++) {
@@ -146,13 +147,66 @@ void webApi::getSerial(JsonObject obj) {
 }
 
 
+//-----------------------------------------------------------------------------
+void webApi::getNotFound(JsonObject obj, String url) {
+    JsonObject ep = obj.createNestedObject("avail_endpoints");
+    ep[F("system")]        = url + F("system");
+    ep[F("statistics")]    = url + F("statistics");
+    ep[F("inverter/list")] = url + F("inverter/list");
+    ep[F("mqtt")]          = url + F("mqtt");
+    ep[F("ntp")]           = url + F("ntp");
+    ep[F("pinout")]        = url + F("pinout");
+    ep[F("radio")]         = url + F("radio");
+    ep[F("serial")]        = url + F("serial");
+    ep[F("index")]         = url + F("index");
+    ep[F("setup")]         = url + F("setup");
+}
+
+
+//-----------------------------------------------------------------------------
+void webApi::getIndex(JsonObject obj) {
+    getSystem(obj.createNestedObject(F("system")));
+    getStatistics(obj.createNestedObject(F("statistics")));
+    obj["refresh_interval"] = SEND_INTERVAL;
+
+    JsonArray inv = obj.createNestedArray(F("inverter"));
+    Inverter<> *iv;
+    for(uint8_t i = 0; i < MAX_NUM_INVERTERS; i ++) {
+        iv = mApp->mSys->getInverterByPos(i);
+        if(NULL != iv) {
+            JsonObject invObj = inv.createNestedObject();
+            invObj[F("id")]              = i;
+            invObj[F("name")]            = String(iv->name);
+            invObj[F("version")]         = String(iv->fwVersion);
+            invObj[F("is_avail")]        = iv->isAvailable(mApp->getTimestamp());
+            invObj[F("is_producing")]    = iv->isProducing(mApp->getTimestamp());
+            invObj[F("ts_last_success")] = iv->getLastTs();
+        }
+    }
+
+    JsonArray warn = obj.createNestedArray(F("warnings"));
+    if(!mApp->mSys->Radio.isChipConnected())
+        warn.add(F("your NRF24 module can't be reached, check the wiring and pinout"));
+    if(!mApp->mqttIsConnected())
+        warn.add(F("MQTT is not connected"));
+
+    JsonArray info = obj.createNestedArray(F("infos"));
+    if(mApp->getRebootRequestState())
+        info.add(F("reboot your ESP to apply all your configuration changes!"));
+    if(!mApp->getSettingsValid())
+        info.add(F("your settings are invalid"));
+    if(mApp->mqttIsConnected())
+        info.add(F("MQTT is connected"));
+}
+
+
 //-----------------------------------------------------------------------------
 void webApi::getSetup(JsonObject obj) {
-    getSystem(obj.createNestedObject("system"));
-    getInverterList(obj.createNestedObject("inverter"));
-    getMqtt(obj.createNestedObject("mqtt"));
-    getNtp(obj.createNestedObject("ntp"));
-    getPinout(obj.createNestedObject("pinout"));
-    getRadio(obj.createNestedObject("radio"));
-    getSerial(obj.createNestedObject("serial"));
+    getSystem(obj.createNestedObject(F("system")));
+    getInverterList(obj.createNestedObject(F("inverter")));
+    getMqtt(obj.createNestedObject(F("mqtt")));
+    getNtp(obj.createNestedObject(F("ntp")));
+    getPinout(obj.createNestedObject(F("pinout")));
+    getRadio(obj.createNestedObject(F("radio")));
+    getSerial(obj.createNestedObject(F("serial")));
 }
diff --git a/tools/esp8266/webApi.h b/tools/esp8266/webApi.h
index afe35ba1..1ad91d05 100644
--- a/tools/esp8266/webApi.h
+++ b/tools/esp8266/webApi.h
@@ -29,6 +29,8 @@ class webApi {
         void getRadio(JsonObject obj);
         void getSerial(JsonObject obj);
 
+        void getNotFound(JsonObject obj, String url);
+        void getIndex(JsonObject obj);
         void getSetup(JsonObject obj);
 
         AsyncWebServer *mSrv;