diff --git a/README.md b/README.md
index fa8689b..4496170 100644
--- a/README.md
+++ b/README.md
@@ -35,11 +35,23 @@ You may need to open the Properties of the installer first, tab “General”
 section “Security” (if available) and select “Unblock”, 
 to enable the “Run anyway” button.
 
+#### WSLtty Portable installer
+
+For a portable installation, e.g. on a USB stick, choose the 
+“-install-portable.exe” file for download. Installation will prompt 
+for a portable installation folder interactively. 
+For example, choosing `U:\opt` will create and use folder 
+`U:\opt\wsltty` both as installation directory and configuration directory.
+Portable installation does not install any start menu or desktop shortcuts 
+and no context menu entries. It creates a shortcut in the selected 
+portable installation folder to start the default WSL distribution.
+
 #### Installation from archive ####
 
 In case a local anti-virus guard barfs about the wsltty installer, the 
 release also contains a `.cab` file. Download it, open it, extract its files 
-to some temporary deployment directory, and invoke `install.bat` from there.
+to some temporary deployment directory, and invoke `install.bat` from there, 
+or `install-portable.bat` for a portable installation.
 
 #### Installation from source repository ####
 
diff --git a/install-portable.bat b/install-portable.bat
new file mode 100755
index 0000000..d13a91d
--- /dev/null
+++ b/install-portable.bat
@@ -0,0 +1,27 @@
+@echo off
+
+set sel="Select folder to place installation of portable wsltty"
+
+for /f "usebackq delims=" %%f in (`powershell "(new-object -COM Shell.Application).BrowseForFolder(0, '%sel%', 0, 0).self.path"`) do set f=%%f
+set instdir=%f%\wsltty
+
+if "%f%"=="" (
+	echo no installation
+	exit
+) else if not exist "%f%" (
+	echo invalid installation folder %instdir%
+	exit
+)
+
+call install "%instdir%" "%instdir%" /P
+
+rem create shortcut
+cd /D "%instdir%"
+set instpath=%instdir:~2%
+set target=%%COMSPEC%%
+set minttyargs=/C bin\mintty.exe --WSL= --icon=/wsl.ico --configdir=. -~
+set bridgeargs= -
+set wdir=%instpath%
+set icon=%instpath%\wsl.ico
+cscript /nologo mkshortcut.vbs "/name:WSL Terminal Portable"
+
diff --git a/install.bat b/install.bat
index 7120bb5..d8e8c69 100755
--- a/install.bat
+++ b/install.bat
@@ -137,11 +137,16 @@ mkdir "%configdir%\themes" 2> nul:
 mkdir "%configdir%\sounds" 2> nul:
 
 rem create config file if it does not yet exist
-if not exist "%configdir%\config" echo # To use common configuration in %%APPDATA%%\mintty, simply remove this file>"%configdir%\config"
+if exist "%configdir%\config" goto appconfig
+echo # To use common configuration in %%APPDATA%%\mintty, simply remove this file>"%configdir%\config"
+if "%3" == "/P" echo # Do not remove this file for WSLtty Portable>>"%configdir%\config"
 
 
 :appconfig
 
+rem skip configuration for WSLtty Portable
+if "%3" == "/P" goto end
+
 rem distro-specific stuff: shortcuts and launch scripts
 cd /D "%installdir%"
 echo Configuring for WSL distributions
diff --git a/makefile b/makefile
index 637afbb..9b495af 100644
--- a/makefile
+++ b/makefile
@@ -279,7 +279,7 @@ cop:	copcab
 	mkdir -p rel
 	cp -fl $(CAB)/* rel/
 
-installer:	cop cab normal-installer silent-installer
+installer:	cop cab normal-installer silent-installer portable-installer
 
 cab:
 	# build cab archive
@@ -299,6 +299,16 @@ silent-installer:
 	# build installer
 	cd rel; iexpress /n wsltty-quiet.SED
 
+InstallPrompt=Install Mintty terminal for WSL Portable?
+FinishMessage=Mintty for WSL Portable installation finished
+
+portable-installer:
+	# prepare build of installer
+	rm -f rel/$(CAB)-install-portable.exe
+	cd rel; sed -e "/InstallPrompt/ s/=.*/=$(InstallPrompt)/" -e "/FinishMessage/ s/=.*/=$(FinishMessage)/" -e "/AppLaunched/ s/install/install-portable/" -e "/TargetName/ s/install.exe/install-portable.exe/" wsltty.SED > wsltty-portable.SED
+	# build installer
+	cd rel; iexpress /n wsltty-portable.SED
+
 install:	cop installbat
 
 installbat:
diff --git a/makewinx.cfg b/makewinx.cfg
index 6454e88..f62cd1c 100644
--- a/makewinx.cfg
+++ b/makewinx.cfg
@@ -60,6 +60,7 @@ FILE24="mintty.ico"
 FILE25="mkshortcut.vbs"
 FILE26="dequote.bat"
 FILE27="cmd2.bat"
+FILE28="install-portable.bat"
 
 [SourceFiles]
 SourceFiles0=.
@@ -93,4 +94,5 @@ SourceFiles0=.
 %FILE25%=
 %FILE26%=
 %FILE27%=
+%FILE28%=