diff --git a/.github/workflows/compile_development.yml b/.github/workflows/compile_development.yml
index 7f539871..48a3f42a 100644
--- a/.github/workflows/compile_development.yml
+++ b/.github/workflows/compile_development.yml
@@ -24,9 +24,11 @@ jobs:
       matrix:
         variant:
           - esp8266
+          - esp8266-minimal
           - esp8266-prometheus
           - esp8285
           - esp32-wroom32
+          - esp32-wroom32-minimal
           - esp32-wroom32-prometheus
           - esp32-wroom32-ethernet
           - esp32-s2-mini
diff --git a/scripts/convertHtml.py b/scripts/convertHtml.py
index c39e95ac..ec16b5f3 100644
--- a/scripts/convertHtml.py
+++ b/scripts/convertHtml.py
@@ -7,8 +7,37 @@ import json
 from datetime import date
 from pathlib import Path
 import subprocess
+import configparser
 Import("env")
 
+import htmlPreprocessorDefines as prepro
+
+
+
+def get_build_flags():
+    config = configparser.ConfigParser()
+    config.read('platformio.ini')
+    global build_flags
+    build_flags = config["env:" + env['PIOENV']]['build_flags'].split('\n')
+
+    for i in range(len(build_flags)):
+        build_flags[i] = build_flags[i][2:]
+
+    # translate board
+    board = config["env:" + env['PIOENV']]['board']
+    if board == "esp12e" or board == "esp8285":
+        build_flags.append("ESP8266")
+    elif board == "lolin_d32":
+        build_flags.append("ESP32")
+    elif board == "lolin_s2_mini":
+        build_flags.append("ESP32")
+        build_flags.append("ESP32-S2")
+    elif board == "lolin_c3_mini":
+        build_flags.append("ESP32")
+        build_flags.append("ESP32-C3")
+    elif board == "esp32-s3-devkitc-1":
+        build_flags.append("ESP32")
+        build_flags.append("ESP32-S3")
 
 def get_git_sha():
     try:
@@ -50,38 +79,46 @@ def readVersionFull(path):
     return version
 
 def htmlParts(file, header, nav, footer, versionPath, lang):
-    p = "";
     f = open(file, "r")
     lines = f.readlines()
     f.close();
 
     f = open(header, "r")
-    h = f.read().strip()
+    h = f.readlines()
     f.close()
 
     f = open(nav, "r")
-    n = f.read().strip()
+    n = f.readlines()
     f.close()
 
     f = open(footer, "r")
-    fo = f.read().strip()
+    fo = f.readlines()
     f.close()
 
+    linesExt = []
     for line in lines:
-        line = line.replace("{#HTML_HEADER}", h)
-        line = line.replace("{#HTML_NAV}", n)
-        line = line.replace("{#HTML_FOOTER}", fo)
-        p += line
+        if line.find("{#HTML_HEADER}") != -1:
+            linesExt.extend(h)
+        elif line.find("{#HTML_NAV}") != -1:
+            linesExt.extend(n)
+        elif line.find("{#HTML_FOOTER}") != -1:
+            linesExt.extend(fo)
+        else:
+            linesExt.append(line)
+
+    linesMod = prepro.conv(linesExt, build_flags)
 
     #placeholders
     version = readVersion(versionPath);
     link = '<a target="_blank" href="https://github.com/lumapu/ahoy/commits/' + get_git_sha() + '">GIT SHA: ' + get_git_sha() + ' :: ' + version + '</a>'
+    p = ""
+    for line in linesMod:
+        p += line
+
     p = p.replace("{#VERSION}", version)
     p = p.replace("{#VERSION_FULL}", readVersionFull(versionPath))
     p = p.replace("{#VERSION_GIT}", link)
 
-    # remove if - endif ESP32
-    p = checkIf(p)
     p = translate(file, p, lang)
     p = translate("general", p, lang) # menu / header / footer
 
@@ -90,30 +127,6 @@ def htmlParts(file, header, nav, footer, versionPath, lang):
     f.close();
     return p
 
-def checkIf(data):
-    if (env['PIOENV'][0:5] == "esp32") or env['PIOENV'][0:4] == "open":
-        data = data.replace("<!--IF_ESP32-->", "")
-        data = data.replace("<!--ENDIF_ESP32-->", "")
-        data = data.replace("/*IF_ESP32*/", "")
-        data = data.replace("/*ENDIF_ESP32*/", "")
-    else:
-        while 1:
-            start = data.find("<!--IF_ESP32-->")
-            end = data.find("<!--ENDIF_ESP32-->")+18
-            if -1 == start:
-                break
-            else:
-                data = data[0:start] + data[end:]
-        while 1:
-            start = data.find("/*IF_ESP32*/")
-            end = data.find("/*ENDIF_ESP32*/")+15
-            if -1 == start:
-                break
-            else:
-                data = data[0:start] + data[end:]
-
-    return data
-
 def findLang(file):
     with open('../lang.json') as j:
         lang = json.load(j)
@@ -189,33 +202,41 @@ def convert2Header(inFile, versionPath, lang):
     f.write("#endif /*__{}_{}_H__*/\n".format(define, define2))
     f.close()
 
-# delete all files in the 'h' dir
-wd = 'web/html/h'
 
-if os.path.exists(wd):
-    for f in os.listdir(wd):
-        os.remove(os.path.join(wd, f))
-wd += "/tmp"
-if os.path.exists(wd):
-    for f in os.listdir(wd):
-        os.remove(os.path.join(wd, f))
+def main():
+    get_build_flags()
 
-# grab all files with following extensions
-os.chdir('./web/html')
-types = ('*.html', '*.css', '*.js', '*.ico', '*.json') # the tuple of file types
-files_grabbed = []
-for files in types:
-    files_grabbed.extend(glob.glob(files))
+    # delete all files in the 'h' dir
+    wd = 'web/html/h'
 
-Path("h").mkdir(exist_ok=True)
-Path("tmp").mkdir(exist_ok=True) # created to check if webpages are valid with all replacements
-shutil.copyfile("style.css", "tmp/style.css")
+    if os.path.exists(wd):
+        for f in os.listdir(wd):
+            os.remove(os.path.join(wd, f))
+    wd += "/tmp"
+    if os.path.exists(wd):
+        for f in os.listdir(wd):
+            os.remove(os.path.join(wd, f))
 
-# get language from environment
-lang = "en"
-if env['PIOENV'][-3:] == "-de":
-    lang = "de"
+    # grab all files with following extensions
+    os.chdir('./web/html')
+    types = ('*.html', '*.css', '*.js', '*.ico', '*.json') # the tuple of file types
+    files_grabbed = []
+    for files in types:
+        files_grabbed.extend(glob.glob(files))
 
-# go throw the array
-for val in files_grabbed:
-    convert2Header(val, "../../defines.h", lang)
+    Path("h").mkdir(exist_ok=True)
+    Path("tmp").mkdir(exist_ok=True) # created to check if webpages are valid with all replacements
+    shutil.copyfile("style.css", "tmp/style.css")
+
+    # get language from environment
+    lang = "en"
+    if env['PIOENV'][-3:] == "-de":
+        lang = "de"
+
+
+    # go throw the array
+    for val in files_grabbed:
+        convert2Header(val, "../../defines.h", lang)
+
+
+main()
diff --git a/scripts/htmlPreprocessorDefines.py b/scripts/htmlPreprocessorDefines.py
new file mode 100644
index 00000000..8fa54fa4
--- /dev/null
+++ b/scripts/htmlPreprocessorDefines.py
@@ -0,0 +1,39 @@
+import re
+import os
+import queue
+
+def error(msg):
+    print("ERROR: " + msg)
+    exit()
+
+def check(inp, lst, pattern):
+    q = queue.LifoQueue()
+    out = []
+    keep = True
+    for line in inp:
+        x = re.findall(pattern, line)
+        if len(x) > 0:
+            if line.find("ENDIF_") != -1:
+                if q.empty():
+                    error("missing open statement!")
+                if q.get() != x[0]:
+                    error("wrong close statement!")
+                keep = True
+            elif line.find("IF_") != -1:
+                q.put(x[0])
+                if keep is True:
+                    keep = x[0] in lst
+            elif line.find("E") != -1:
+                if q.empty():
+                    error("missing open statement!")
+                keep = not keep
+        else:
+            if keep is True:
+                out.append(line)
+
+    return out
+
+def conv(inp, lst):
+    print(lst)
+    out = check(inp, lst, r'\/\*(?:IF_|ELS|ENDIF_)([A-Z0-9\-_]+)?\*\/')
+    return check(out, lst, r'\<\!\-\-(?:IF_|ELS|ENDIF_)([A-Z0-9\-_]+)?\-\-\>')
diff --git a/src/CHANGES.md b/src/CHANGES.md
index f5aa9cd9..71a8fa16 100644
--- a/src/CHANGES.md
+++ b/src/CHANGES.md
@@ -1,5 +1,9 @@
 # Development Changes
 
+## 0.8.90 - 2024-03-05
+* added preprocessor defines to HTML (from platform.ini) to reduce the HTML in size if modules aren't enabled
+* auto build minimal English versions of ESP8266 and ESP32
+
 ## 0.8.89 - 2024-03-02
 * merge PR: Collection of small fixes #1465
 * fix: show esp type on `/history` #1463
diff --git a/src/defines.h b/src/defines.h
index b7ee4406..5f156cbb 100644
--- a/src/defines.h
+++ b/src/defines.h
@@ -13,7 +13,7 @@
 //-------------------------------------
 #define VERSION_MAJOR       0
 #define VERSION_MINOR       8
-#define VERSION_PATCH       89
+#define VERSION_PATCH       90
 
 //-------------------------------------
 typedef struct {
diff --git a/src/platformio.ini b/src/platformio.ini
index f949aa37..e9e63465 100644
--- a/src/platformio.ini
+++ b/src/platformio.ini
@@ -191,7 +191,7 @@ monitor_filters =
 
 [env:esp32-wroom32-ethernet]
 platform = espressif32
-board = esp32dev
+board = lolin_d32
 lib_deps =
     khoih-prog/AsyncWebServer_ESP32_W5500
     khoih-prog/AsyncUDP_ESP32_W5500
@@ -214,7 +214,7 @@ monitor_filters =
 
 [env:esp32-wroom32-ethernet-de]
 platform = espressif32
-board = esp32dev
+board = lolin_d32
 lib_deps =
     khoih-prog/AsyncWebServer_ESP32_W5500
     khoih-prog/AsyncUDP_ESP32_W5500
diff --git a/src/web/html/includes/nav.html b/src/web/html/includes/nav.html
index bab64829..c0d6c470 100644
--- a/src/web/html/includes/nav.html
+++ b/src/web/html/includes/nav.html
@@ -7,7 +7,9 @@
     </a>
     <div id="topnav" class="mobile">
         <a id="nav3" class="hide" href="/live?v={#VERSION}">{#NAV_LIVE}</a>
+        <!--IF_ENABLE_HISTORY-->
         <a id="nav11" class="acitve" href="/history?v={#VERSION}">{#NAV_HISTORY}</a>
+        <!--ENDIF_ENABLE_HISTORY-->
         <a id="nav4" class="hide" href="/serial?v={#VERSION}">{#NAV_WEBSERIAL}</a>
         <a id="nav5" class="hide" href="/setup?v={#VERSION}">{#NAV_SETTINGS}</a>
         <span class="separator"></span>
diff --git a/src/web/html/setup.html b/src/web/html/setup.html
index 57dc6a8c..3536fee3 100644
--- a/src/web/html/setup.html
+++ b/src/web/html/setup.html
@@ -272,7 +272,7 @@
                             <!--ENDIF_ESP32-->
                         </fieldset>
                     </div>
-
+                    <!--IF_PLUGIN_DISPLAY-->
                     <button type="button" class="s_collapsible">{#DISPLAY_CONFIG}</button>
                     <div class="s_content">
                         <fieldset class="mb-4">
@@ -301,6 +301,7 @@
                             </div>
                         </fieldset>
                     </div>
+                    <!--ENDIF_PLUGIN_DISPLAY-->
 
                     <div class="row mb-4 mt-4">
                         <div class="col-8 col-sm-3">{#BTN_REBOOT_SUCCESSFUL_SAVE}</div>
@@ -341,6 +342,7 @@
             var maxInv = 0;
             var ts = 0;
 
+            /*IF_ESP8266*/
             var esp8266pins = [
                 [255, "{#PIN_OFF}"],
                 [0, "D3 (GPIO0)"],
@@ -361,6 +363,7 @@
                 [15, "D8 (GPIO15)"],
                 [16, "D0 (GPIO16 - {#PIN_NO_IRQ})"]
             ];
+            /*ENDIF_ESP8266*/
 
             /*IF_ESP32*/
             var esp32pins = [
@@ -392,6 +395,7 @@
                 [36, "VP (GPIO36, {#PIN_INPUT_ONLY})"],
                 [39, "VN (GPIO39, {#PIN_INPUT_ONLY})"]
             ];
+            /*IF_ESP32-S2*/
             var esp32sXpins = [
                 [255, "off / default"],
                 [0,  "GPIO0 ({#PIN_DONT_USE} - BOOT)"],
@@ -440,6 +444,58 @@
                 [47, "GPIO47"],
                 [48, "GPIO48"],
             ];
+            /*ENDIF_ESP32-S2*/
+            /*IF_ESP32-S3*/
+            var esp32sXpins = [
+                [255, "off / default"],
+                [0,  "GPIO0 ({#PIN_DONT_USE} - BOOT)"],
+                [1,  "GPIO1"],
+                [2,  "GPIO2"],
+                [3,  "GPIO3"],
+                [4,  "GPIO4"],
+                [5,  "GPIO5"],
+                [6,  "GPIO6"],
+                [7,  "GPIO7"],
+                [8,  "GPIO8"],
+                [9,  "GPIO9"],
+                [10, "GPIO10"],
+                [11, "GPIO11"],
+                [12, "GPIO12"],
+                [13, "GPIO13"],
+                [14, "GPIO14"],
+                [15, "GPIO15"],
+                [16, "GPIO16"],
+                [17, "GPIO17"],
+                [18, "GPIO18"],
+                [19, "GPIO19 ({#PIN_DONT_USE} - USB-)"],
+                [20, "GPIO20 ({#PIN_DONT_USE} - USB+)"],
+                [21, "GPIO21"],
+                [26, "GPIO26 (PSRAM - {#PIN_NOT_AVAIL})"],
+                [27, "GPIO27 (FLASH - {#PIN_NOT_AVAIL})"],
+                [28, "GPIO28 (FLASH - {#PIN_NOT_AVAIL})"],
+                [29, "GPIO29 (FLASH - {#PIN_NOT_AVAIL})"],
+                [30, "GPIO30 (FLASH - {#PIN_NOT_AVAIL})"],
+                [31, "GPIO31 (FLASH - {#PIN_NOT_AVAIL})"],
+                [32, "GPIO32 (FLASH - {#PIN_NOT_AVAIL})"],
+                [33, "GPIO33 (not exposed on S3-WROOM modules)"],
+                [34, "GPIO34 (not exposed on S3-WROOM modules)"],
+                [35, "GPIO35"],
+                [36, "GPIO36"],
+                [37, "GPIO37"],
+                [38, "GPIO38"],
+                [39, "GPIO39"],
+                [40, "GPIO40"],
+                [41, "GPIO41"],
+                [42, "GPIO42"],
+                [43, "GPIO43"],
+                [44, "GPIO44"],
+                [45, "GPIO45 ({#PIN_DONT_USE} - STRAPPING PIN)"],
+                [46, "GPIO46 ({#PIN_DONT_USE} - STRAPPING PIN)"],
+                [47, "GPIO47"],
+                [48, "GPIO48"],
+            ];
+            /*ENDIF_ESP32-S3*/
+            /*IF_ESP32-C3*/
             var esp32c3pins = [
                 [255, "off / default"],
                 [0,  "GPIO0"],
@@ -465,6 +521,7 @@
                 [20, "GPIO20 (RX)"],
                 [21, "GPIO21 (TX)"],
             ];
+            /*ENDIF_ESP32-C3*/
             /*ENDIF_ESP32*/
             var nrfPa = [
                 [0, "MIN ({#PIN_RECOMMENDED})"],
@@ -890,11 +947,19 @@
 
             function parsePinout(obj, type, system) {
                 var e = document.getElementById("pinout");
-                var pinList = esp8266pins;
                 /*IF_ESP32*/
                 var pinList = esp32pins;
-                if ("ESP32-S3" == system.chip_model || "ESP32-S2" == system.chip_model) pinList = esp32sXpins;
-                else if("ESP32-C3" == system["chip_model"]) pinList = esp32c3pins;
+                /*IF_ESP32-S2*/
+                pinList = esp32sXpins;
+                /*ENDIF_ESP32-S2*/
+                /*IF_ESP32-S3*/
+                pinList = esp32sXpins;
+                /*ENDIF_ESP32-S3*/
+                /*IF_ESP32-C3*/
+                pinList = esp32c3pins;
+                /*ENDIF_ESP32-C3*/
+                /*ELSE*/
+                var pinList = esp8266pins;
                 /*ENDIF_ESP32*/
                 pins = [['led0', 'pinLed0', '{#LED_AT_LEAST_ONE_PRODUCING}'], ['led1', 'pinLed1', '{#LED_MQTT_CONNECTED}'], ['led2', 'pinLed2', '{#LED_NIGHT_TIME}']];
                 for(p of pins) {
@@ -926,11 +991,19 @@
                 var en = inp("nrfEnable", null, null, ["cb"], "nrfEnable", "checkbox");
                 en.checked = obj["en"];
 
-                var pinList = esp8266pins;
                 /*IF_ESP32*/
                 var pinList = esp32pins;
-                if ("ESP32-S3" == system.chip_model || "ESP32-S2" == system.chip_model) pinList = esp32sXpins;
-                else if("ESP32-C3" == system["chip_model"]) pinList = esp32c3pins;
+                /*IF_ESP32-S2*/
+                pinList = esp32sXpins;
+                /*ENDIF_ESP32-S2*/
+                /*IF_ESP32-S3*/
+                pinList = esp32sXpins;
+                /*ENDIF_ESP32-S3*/
+                /*IF_ESP32-C3*/
+                pinList = esp32c3pins;
+                /*ENDIF_ESP32-C3*/
+                /*ELSE*/
+                var pinList = esp8266pins;
                 /*ENDIF_ESP32*/
 
                 e.replaceChildren (
@@ -962,8 +1035,15 @@
                 var e = document.getElementById("cmt");
                 var en = inp("cmtEnable", null, null, ["cb"], "cmtEnable", "checkbox");
                 var pinList = esp32pins;
-                if ("ESP32-S3" == system.chip_model || "ESP32-S2" == system.chip_model) pinList = esp32sXpins;
-                else if("ESP32-C3" == system["chip_model"]) pinList = esp32c3pins;
+                /*IF_ESP32-S2*/
+                pinList = esp32sXpins;
+                /*ENDIF_ESP32-S2*/
+                /*IF_ESP32-S3*/
+                pinList = esp32sXpins;
+                /*ENDIF_ESP32-S3*/
+                /*IF_ESP32-C3*/
+                pinList = esp32c3pins;
+                /*ENDIF_ESP32-C3*/
 
                 en.checked = obj["en"];
 
@@ -1008,12 +1088,20 @@
                 }
             }
 
+            /*IF_PLUGIN_DISPLAY*/
             function parseDisplay(obj, type, system) {
                 var pinList = esp8266pins;
                 /*IF_ESP32*/
                 var pinList = esp32pins;
-                if ("ESP32-S3" == system.chip_model || "ESP32-S2" == system.chip_model) pinList = esp32sXpins;
-                else if("ESP32-C3" == system["chip_model"]) pinList = esp32c3pins;
+                /*IF_ESP32-S2*/
+                pinList = esp32sXpins;
+                /*ENDIF_ESP32-S2*/
+                /*IF_ESP32-S3*/
+                pinList = esp32sXpins;
+                /*ENDIF_ESP32-S3*/
+                /*IF_ESP32-C3*/
+                pinList = esp32c3pins;
+                /*ENDIF_ESP32-C3*/
                 /*ENDIF_ESP32*/
 
                 for(var i of ["disp_pwr"])
@@ -1149,6 +1237,7 @@
                 setHide("screenSaver",     !optionsMap.get(dispType)[2]);
                 setHide("pirPin",          !(optionsMap.get(dispType)[2] && (screenSaver==2))); // show pir pin only for motion screensaver
             }
+            /*ENDIF_PLUGIN_DISPLAY*/
 
             function tick() {
                 document.getElementById("date").innerHTML = toIsoDateStr((new Date((++ts) * 1000)));
@@ -1168,7 +1257,9 @@
                     parseCmtRadio(root["radioCmt"], root["system"]["esp_type"], root["system"]);
                     /*ENDIF_ESP32*/
                     parseSerial(root["serial"]);
+                    /*IF_PLUGIN_DISPLAY*/
                     parseDisplay(root["display"], root["system"]["esp_type"], root["system"]);
+                    /*ENDIF_PLUGIN_DISPLAY*/
                     getAjax("/api/inverter/list", parseIv);
                 }
             }