diff --git a/BUILDS.md b/BUILDS.md
index 733b991ec..7a9217574 100644
--- a/BUILDS.md
+++ b/BUILDS.md
@@ -20,7 +20,6 @@ Note: `minimal` variant is not listed as it shouldn't be used outside of the [up
 | USE_TELEGRAM          | - | - / - | - | - | - | - |
 | USE_KNX               | - | - / x | x | - | - | - |
 | USE_WEBSERVER         | x | x / x | x | x | x | x |
-| USE_JAVASCRIPT_ES6    | - | - / - | - | - | - | - |
 | USE_WEBSEND_RESPONSE  | - | - / - | - | - | - | - |
 | USE_EMULATION_HUE     | x | x / x | - | x | - | - |
 | USE_EMULATION_WEMO    | x | x / x | - | x | - | - |
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2a312afe..10889660d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,7 @@ All notable changes to this project will be documented in this file.
 - Support for improv as used by esp-web-tools
 
 ### Changed
-
+- Remove support for Internet Explorer by allowing ECMAScript6 syntax using less JavaScript code bytes (#15280)
 
 ### Fixed
 
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 1c56d6c18..b77ef3e22 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -136,6 +136,7 @@ The latter links can be used for OTA upgrades too like ``OtaUrl http://ota.tasmo
 - Extent number of pulsetimers from 8 to 32 [#8266](https://github.com/arendst/Tasmota/issues/8266)
 - Consolidate three RTC chip drivers (DS3231, BM8563, PCF85363) into one driver updating RTC as soon as possible after restart
 - Removed command ``Sensor33`` and replaced by ``RtcNtpserver``
+- Remove support for Internet Explorer by allowing ECMAScript6 syntax using less JavaScript code bytes [#15280](https://github.com/arendst/Tasmota/issues/15280)
 - DS3231 I2C address define ``USE_RTC_ADDR`` into ``DS3231_ADDRESS``
 - Display of energy values in GUI use columns when define ``USE_ENERGY_COLUMN_GUI`` is enabled (default)
 - ESP8266 Shrinked tasmota-minimal.bin by removing all commands except ``Upgrade``, ``Upload``, ``OtaUrl``, ``Seriallog``, ``Weblog`` and ``Restart``
diff --git a/tasmota/html_compressed/HTTP_HEADER1_NOES6.h b/tasmota/html_compressed/HTTP_HEADER1_NOES6.h
deleted file mode 100644
index 85c977688..000000000
--- a/tasmota/html_compressed/HTTP_HEADER1_NOES6.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/////////////////////////////////////////////////////////////////////
-// compressed by tools/unishox/compress-html-uncompressed.py
-/////////////////////////////////////////////////////////////////////
-
-const size_t HTTP_HEADER1_SIZE = 739;
-const char HTTP_HEADER1_COMPRESSED[] PROGMEM = "\x3D\x0F\xE1\x10\x98\x1D\x19\x0C\x64\x85\x50\xD0\x8F\xC3\xD0\x55\x0D\x09\x05\x7C"
-                             "\x3C\x7C\x3D\x87\xD7\x8F\x62\x0C\x2B\xF7\x8F\x87\xB0\xF6\x1F\x87\xA0\xA7\x62\x1F"
-                             "\x87\xA0\xD7\x56\x83\x15\x7F\xF3\xA3\xE1\xF6\x2E\x8C\x1D\x67\x3E\x7D\x90\x21\x52"
-                             "\xEB\x1A\xCF\x87\xB0\xCF\x58\xF8\xCC\xFD\x1E\xC4\x1E\x75\x3E\xA3\xE1\xEC\x1F\xD1"
-                             "\x28\x51\xF0\x46\x67\xA1\xB3\xAC\x7F\x44\xA1\x47\x56\xF6\xD6\xD8\x47\x5F\x83\xB0"
-                             "\x99\xF0\xE4\x3A\x88\x5F\x9F\xCE\xBF\x07\x61\x58\xE0\x99\xF3\xB0\xF6\x1D\x87\xE1"
-                             "\xE8\x16\xF1\xA2\xFB\x08\xF8\x7B\x34\x3C\xE3\xD8\x85\x7D\x98\x3E\x1E\xC1\x2E\xAC"
-                             "\xF3\xD1\xB6\x3C\xCE\xC3\x61\xD7\xA1\xE7\x1E\x07\x5F\x99\xCE\xC3\xA8\x88\xAE\xEC"
-                             "\x75\xDB\xB6\x3A\xC3\xBB\x77\x66\xA0\xC8\x7C\xAC\xAC\xAC\xAC\x8C\x0F\x15\x95\x95"
-                             "\x90\x63\xC4\x57\x77\x66\xAB\xBB\xBD\xB2\x37\xA0\x11\x32\x04\x29\x46\xF5\xE3\xB0"
-                             "\xEC\x3B\x0E\xC2\xB2\x18\x73\x4E\xC2\x1C\x76\xC8\x51\xCE\x22\x36\x1C\xA3\xB0\x85"
-                             "\x1C\xF9\x1A\x1C\x44\x66\x73\x09\x91\xB7\x87\x1D\xB2\x14\x2C\x43\x94\x76\x10\xA3"
-                             "\x9E\x2E\x10\xCC\xE6\x13\x39\xB6\x43\x8E\xD9\x18\x1A\x46\xD1\xA7\x60\xA2\x1A\x68"
-                             "\x6C\x33\x39\x84\x46\xD1\xE2\x36\x8E\x3B\x64\x28\xB0\x33\x94\x76\x10\xA3\x9A\x76"
-                             "\xC8\x43\x33\x98\x46\x08\x61\x0C\x1C\x76\xC8\x51\xCD\x2E\x39\x47\x61\x0A\x3B\x08"
-                             "\x43\x88\x8C\xCE\x61\x18\x39\xA7\x61\x0E\x3B\x64\xCA\xCA\xCB\x0E\x61\x13\x2B\x2B"
-                             "\x21\x05\x90\xE2\xB2\xB2\xB3\x9E\x21\xE2\x35\x02\x5C\xC0\x5B\xB8\x0A\x17\x0F\x61"
-                             "\xF8\x7A\x56\xD0\x4C\xFC\x3E\xBC\x8E\xB4\x7D\x78\xF4\x3B\x01\x06\x59\xE9\xE0\xFF"
-                             "\xA3\x28\xFC\x33\xBF\xA3\x61\xF3\x85\x84\x11\xD4\x15\x1D\x55\x87\x55\x0C\x3A\x86"
-                             "\x06\x7C\x3E\xCF\xB3\xC1\x81\x7C\x1D\x6E\x72\x63\x8E\xEF\x8E\xF1\xED\xFB\xA1\x7F"
-                             "\xE4\x26\x06\x2C\x6B\xEA\x3A\x0F\x3A\x26\x13\x1A\xFA\x88\x71\x91\x68\x87\x77\xC7"
-                             "\x78\xF0\x7B\x81\x13\x0E\x35\x78\x13\xF0\xE3\x50\xB7\xF3\x22\xF3\x09\x87\x59\xF0"
-                             "\x49\xC3\x7C\x30\xEE\xE9\xDE\x3D\xAC\x71\xDD\xD3\xBC\x74\xA3\x21\x8C\xF8\x77\x41"
-                             "\x1A\x41\xF0\xF8\x7D\xD3\x36\x51\xF6\x76\x8F\xB1\x97\xEF\x0F\xE7\xC4\x3E\xCF\x30"
-                             "\x41\x9C\x08\xF8\xF8\xF8\x47\x74\xC1\xDE\x3D\xA3\xFB\xC2\x60\xF9\xD2\xC4\x10\x99"
-                             "\x9B\xEA\x20\xB7\xD4\xF9\xFC\xEE\x9F\x61\x65\x88\x7D\x9D\x46\x0E\xF1\xE0\xF7\x1B";
-
-#define  HTTP_HEADER1       Decompress(HTTP_HEADER1_COMPRESSED,HTTP_HEADER1_SIZE).c_str()
\ No newline at end of file
diff --git a/tasmota/html_uncompressed/HTTP_HEADER1_NOES6.h b/tasmota/html_uncompressed/HTTP_HEADER1_NOES6.h
deleted file mode 100644
index 9bce849d3..000000000
--- a/tasmota/html_uncompressed/HTTP_HEADER1_NOES6.h
+++ /dev/null
@@ -1,23 +0,0 @@
-const char HTTP_HEADER1[] PROGMEM =
-  "<!DOCTYPE html><html lang=\"%s\" class=\"\">"
-  "<head>"
-  "<meta charset='utf-8'>"
-  "<meta name=\"viewport\" content=\"width=device-width,initial-scale=1,user-scalable=no\"/>"
-  "<link rel=\"icon\" href=\"data:image/x-icon;base64,AAABAAEAEBACAAEAAQCwAAAAFgAAACgAAAAQAAAAIAAAAAEAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA////AP5/b+H6X2/h8k9v4eZnb+Hud2/h7ndv4e53b+FmZm/hMkxv4ZgZb+HOc2/h5+dv4fPPb+H5n2/h/D9v4f5/b+EAAO4EAADuBAAA7gQAAO4EAADuBAAA7gQAAO4EAADuBAAA7gQAAO4EAADuBAAA7gQAAO4EAADuBAAA7gQAAO4E\">"
-  "<title>%s - %s</title>"
-
-  "<script>"
-  "var x=null,lt,to,tp,pc='';"            // x=null allow for abortion
-
-  "function eb(s){"
-    "return document.getElementById(s);"  // Alias to save code space
-  "}"
-  "function qs(s){"                       // Alias to save code space
-    "return document.querySelector(s);"
-  "}"
-  "function sp(i){"                       // Toggle password visibility
-    "eb(i).type=(eb(i).type==='text'?'password':'text');"
-  "}"
-  "function wl(f){"                       // Execute multiple window.onload
-    "window.addEventListener('load',f);"
-  "}";
diff --git a/tasmota/my_user_config.h b/tasmota/my_user_config.h
index e80da076a..4d0158db5 100644
--- a/tasmota/my_user_config.h
+++ b/tasmota/my_user_config.h
@@ -470,7 +470,6 @@
   #define WEB_PORT             80                // Web server Port for User and Admin mode
   #define WEB_USERNAME         "admin"           // Web server Admin mode user name
 //  #define DISABLE_REFERER_CHK                     // [SetOption128] Disable HTTP API
-//  #define USE_JAVASCRIPT_ES6                     // Enable ECMAScript6 syntax using less JavaScript code bytes (fails on IE11)
   #define USE_ENHANCED_GUI_WIFI_SCAN             // Enable Wi-Fi scan output with BSSID (+0k5 code)
 //  #define USE_WEBSEND_RESPONSE                   // Enable command WebSend response message (+1k code)
 //  #define USE_WEBGETCONFIG                       // Enable restoring config from external webserver (+0k6)
diff --git a/tasmota/xdrv_01_webserver.ino b/tasmota/xdrv_01_webserver.ino
index 01f9c1fb4..4bfc61b66 100644
--- a/tasmota/xdrv_01_webserver.ino
+++ b/tasmota/xdrv_01_webserver.ino
@@ -62,17 +62,9 @@ const uint16_t HTTP_OTA_RESTART_RECONNECT_TIME = 10000;  // milliseconds - Allow
 #include <DNSServer.h>
 
 #ifdef USE_UNISHOX_COMPRESSION
-  #ifdef USE_JAVASCRIPT_ES6
-    #include "./html_compressed/HTTP_HEADER1_ES6.h"
-  #else
-    #include "./html_compressed/HTTP_HEADER1_NOES6.h"
-  #endif
+  #include "./html_compressed/HTTP_HEADER1_ES6.h"
 #else
-  #ifdef USE_JAVASCRIPT_ES6
-    #include "./html_uncompressed/HTTP_HEADER1_ES6.h"
-  #else
-    #include "./html_uncompressed/HTTP_HEADER1_NOES6.h"
-  #endif
+  #include "./html_uncompressed/HTTP_HEADER1_ES6.h"
 #endif
 
 const char HTTP_SCRIPT_COUNTER[] PROGMEM =