diff --git a/optional/install-irfanview.cmd b/optional/install-irfanview.cmd
index ba596ab..8576c78 100644
--- a/optional/install-irfanview.cmd
+++ b/optional/install-irfanview.cmd
@@ -5,7 +5,7 @@ if %ERRORLEVEL% neq 0 exit /b
 set EXE=..\software\iview-setup.exe
 set ZIP=..\software\iview-plugins.zip
 set STARTMENU="%PROGRAMDATA%\Microsoft\Windows\Start Menu\Programs"
-set TARGET=%PROGRAMFILES%\IrfanView
+set TARGET="%PROGRAMFILES%\IrfanView"
 
 if NOT EXIST %EXE% (
   echo ERROR: %EXE% not found!
@@ -16,7 +16,7 @@ if NOT EXIST %EXE% (
 echo ####### %0 #######
 
 echo installing IrfanView ...
-start /wait %EXE% /silent /desktop=1 /thumbs=1 /folder="%TARGET%" /group=1 /allusers=1
+start /wait %EXE% /silent /desktop=1 /thumbs=1 /folder=%TARGET% /group=1 /allusers=1
 
 echo removing IrfanView startmenu folder ...
 rd /S /Q %STARTMENU%\"IrfanView" 2>nul
@@ -28,103 +28,9 @@ move /Y "%PUBLIC%\Desktop\IrfanView*.lnk" %STARTMENU%\IrfanView
 rem refresh desktop (W10 style)
 ie4uinit.exe -show
 
-for %%A in (
-
-  acr
-  ani
-  b3d
-  bmp
-  dib
-  clp
-  crw
-  cr2
-  cr3
-  cur
-  dcm
-  ima
-  dcx
-  dds
-  djvu
-  iw44
-  dxf
-  ecw
-  emf
-  eps
-  ps
-  exr
-  g3
-  gif
-  hdp
-  jxr
-  wdp
-  heic
-  ico
-  iff
-  lbm
-  jls
-  jp2
-  jpc
-  j2k
-  jpg
-  jpeg
-  jpe
-  jpm
-  mng
-  jng
-  pbm
-  pcd
-  pcx
-  pgm
-  png
-  ppm
-  psd
-  psp
-  ras
-  sun
-  raw
-  rle
-  sff
-  sgi
-  rgb
-  sid
-  tga
-  tif
-  tiff
-  wbmp
-  webp
-  wmf
-  xbm
-  xpm
-  swf
-  flv
-  ttf
-  asf
-  avi
-  mpg
-  mpe
-  mpeg
-  mov
-  wmv
-  aif
-  mid
-  rmi
-  mp3
-  ogg
-  au
-  snd
-  wav
-  wma
-
-) do (
-
-  echo registering file type [ .%%A ] ...
-  sfta --reg "%TARGET%\i_view64.exe" ".%%A
-
-)
-
 if EXIST %ZIP% (
   echo extracting and installing PDF plugin ...
-  7z -o"%TARGET%"\Plugins x %ZIP% PDF.dll 
+  7z -o%TARGET%\Plugins -aoa x %ZIP% PDF.dll 
 )
 
 echo ####### %0 #######
diff --git a/optional/install-pdf24.cmd b/optional/install-pdf24.cmd
index fe6cb34..1b93a47 100644
--- a/optional/install-pdf24.cmd
+++ b/optional/install-pdf24.cmd
@@ -28,9 +28,6 @@ echo removing Desktop icons ...
 del /F "%PUBLIC%\Desktop\PDF24.lnk" 2>nul
 del /F "%USERPROFILE%\Desktop\Online PDF Tools.url" 2>nul
 
-echo registering file type [ .pdf ] ...
-sfta --reg "%PROGRAMFILES%\PDF24\pdf24-Reader.exe" ".pdf
-
 echo refreshing desktop (W10 style) ...
 ie4uinit.exe -show
 
diff --git a/scripts/set-filetypes.cmd b/scripts/set-filetypes.cmd
new file mode 100644
index 0000000..074533e
--- /dev/null
+++ b/scripts/set-filetypes.cmd
@@ -0,0 +1,69 @@
+@echo off
+
+echo ####### %0 #######
+
+set AKA=irfanview
+set BINARY="%PROGRAMFILES%\IrfanView\i_view64.exe"
+set SUFFIX=acr ani b3d bmp dib clp crw cr2 cr3 cur dcm ima dcx dds djvu iw44 dxf ^
+           ecw emf eps ps exr g3 gif hdp jxr wdp heic ico iff lbm jls jp2 jpc j2k ^
+           jpg jpeg jpe jpm mng jng pbm pcd pcx pgm png ppm psd psp ras sun raw rle ^
+           sff sgi rgb sid tga tif tiff wbmp webp wmf xbm xpm swf flv ttf asf avi ^
+           mpg mpe mpeg mov wmv aif mid rmi mp3 ogg au snd wav wma
+call :SFTA
+
+set AKA=PDF24
+set BINARY="%PROGRAMFILES%\PDF24\pdf24-Reader.exe"
+set SUFFIX=pdf
+call :SFTA
+
+set AKA=Presentations
+set BINARY="%PROGRAMFILES%\Softmaker Office 2021\Presentations.exe"
+set SUFFIX=ppt pptx
+call :SFTA
+
+set AKA=PlanMaker
+set BINARY="%PROGRAMFILES%\Softmaker Office 2021\Planmaker.exe"
+set SUFFIX=xls xlsx
+call :SFTA
+
+set AKA=TextMaker
+set BINARY="%PROGRAMFILES%\Softmaker Office 2021\Textmaker.exe"
+set SUFFIX=doc docx
+call :SFTA
+
+rem refresh desktop (W10 style)
+ie4uinit.exe -show
+
+goto :END
+
+rem ####################################################
+rem set filetypes with tool "sfta" ...
+
+:SFTA
+set FILETYPE_DONE="%LOCALAPPDATA%\.filetype_done.%AKA%"
+
+if NOT EXIST %BINARY% (
+  echo INFO: [ %BINARY% ] is not installed.
+  goto :eof
+) else (
+  echo working on [ %AKA% ] ...
+)
+
+if NOT EXIST %FILETYPE_DONE% (
+  for %%A in (
+    %SUFFIX%
+  ) do (
+    echo registering file type [ .%%A ] for [ %AKA% ]...
+    sfta --reg %BINARY% .%%A
+  )
+  rem create a statusfile ...
+  echo 1 >%FILETYPE_DONE%
+)
+
+goto :eof
+
+rem ####################################################
+
+:END
+echo ####### %0 #######
+
diff --git a/tools/logon.cmd b/tools/logon.cmd
index a143083..a01c499 100644
--- a/tools/logon.cmd
+++ b/tools/logon.cmd
@@ -73,6 +73,10 @@ echo.
 powershell -command %TOOLS%\scripts\set-recyclebin.ps1
 echo.
 
+rem set filetype associations ...
+call %TOOLS%\scripts\set-filetypes.cmd
+echo.
+
 echo Remapping Desktop folder to standard location ...
 reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" ^
   /v Desktop /t REG_EXPAND_SZ /d "%USERPROFILE%\Desktop" /f 1>nul