diff --git a/.gitignore b/.gitignore
index 259148fa..f7c5f50f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,9 @@
 *.exe
 *.out
 *.app
+
+# PlatformIO in VScode
+.pio/
+.vscode/
+*.lnk
+*.bak
diff --git a/pio_ci_ex_ALL.bat b/pio_ci_ex_ALL.bat
new file mode 100644
index 00000000..125f92c3
--- /dev/null
+++ b/pio_ci_ex_ALL.bat
@@ -0,0 +1,38 @@
+@echo off
+rem Build all listed examples of this library on PIO CLI; may take some time
+rem Verifies that library and all examples still compile
+
+setlocal EnableDelayedExpansion enableextensions
+set CI_DIR=%~dp0..\async-esp-fs-webserver.pio-ci
+set EXAMPLES=simpleServerCaptive simpleServer withWebSocket customHTML customOptions gpio_list handleFormData highcharts remoteOTA esp32-cam
+::set EXAMPLES=simpleServerCaptive
+:: simpleServer withWebSocket customHTML
+set BOARDS= esp32dev esp12e
+set OPT_esp12e=-O "lib_deps=ArduinoJson@6.21.4"
+set OPT_esp32dev=-O "lib_deps=ArduinoJson@6.21.4"
+set NOT_esp12e=esp32-cam
+set NOT_esp32dev=esp8266-app
+set EXCLIB= --exclude=lib\*\.git* --exclude=lib\*\.pio --exclude=lib\*\.vscode --exclude=lib\*\built-in-webpages --exclude=lib\*\examples
+
+FOR  %%B IN (%BOARDS%) DO (
+  FOR %%E IN (%EXAMPLES%) DO (
+    if %%E==!NOT_%%B! (
+      echo ### not compiling %%E for %%B
+    ) else (
+      set CIEXDIR=%CI_DIR%\ci_ex_%%B_%%E
+      IF EXIST "!CIEXDIR!" RMDIR /s/q "!CIEXDIR!"
+      MKDIR "!CIEXDIR!"
+      set OPT=!OPT_%%B!
+      set OUT="!CIEXDIR!\build.out.txt"
+      set ERR="!CIEXDIR!\build.err.txt"
+      echo ### Compiling %%E for %%B
+      echo +pio ci  -b %%B !OPT! --keep-build-dir --build-dir="!CIEXDIR!\" --lib=. %EXCLIB%  .\examples\%%E\*.*   1^>!OUT!  2^>!ERR!
+      pio ci -b %%B !OPT! --keep-build-dir --build-dir="!CIEXDIR!" --lib=. %EXCLIB%  .\examples\%%E\*.*   >!OUT!  2>!ERR!
+      FOR /f %%i IN (!ERR!) DO IF EXIST %%i IF %%~zi GTR 0 ECHO ###ERROR in %%i && TYPE %%i
+    )
+    echo ### DONE
+  )
+)
+
+:: note activation pio verbose option '-v' generates a lot of output (~25k/compile, ~2MB/pio-ci)
+
diff --git a/platformio.ini b/platformio.ini
new file mode 100644
index 00000000..51f532f2
--- /dev/null
+++ b/platformio.ini
@@ -0,0 +1,33 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp32dev]
+framework = arduino
+platform = espressif32
+board = esp32dev
+lib_deps = bblanchon/ArduinoJson@^6.21.4
+  DNSServer@^2.0.0
+  ESPmDNS@^2.0.0
+  WiFi@^2.0.0
+  FS@^2.0.0
+  LittleFS@^2.0.0
+  Update@^2.0.0
+
+
+[env:esp12e]
+framework = arduino
+platform = espressif8266
+board = esp12e
+board_build.mcu = esp8266
+lib_deps = bblanchon/ArduinoJson@^6.21.4
+  DNSServer@^1.1.0
+  ESP8266mDNS@^1.2
+  ESP8266WiFi@^1.0
+  LittleFS