OrganizeByExtension.bat

@echo off
SETLOCAL
title OrganizeByExtension.bat
echo ---------------------------------------------------------------------------
echo Script : OrganizeByExtension.bat
echo Description : Organize files into different folders based on their extension
echo Note : Does not affect files in subdirectories
echo ---------------------------------------------------------------------------

for /f "tokens=* delims=" %%f in ('dir /b /a-d') do (
    IF not %%f==OrganizeByExtension.bat call :PlaceIntoAppropriateFolder "%%f"
)
GOTO ProcessComplete


:PlaceIntoAppropriateFolder
SET "fileName=%~1"
for /f "tokens=2 delims=." %%a in ("%fileName%") do set fileExtension=%%a
if not exist "%~dp0%fileExtension%\" mkdir "%~dp0%fileExtension%"
MOVE "%fileName%"  "%~dp0%fileExtension%"
ECHO Moved %fileName% to the %fileExtension% folder
exit /b

:ProcessComplete
echo Complete...
ENDLOCAL
pause
exit