Drag-and-drop files from Windows Explorer on to this batch script to rename them

rename_file.bat

@echo off
:: Script to rename files: lowercase and replace spaces with underscores
setlocal enabledelayedexpansion

:: Check if any files were passed
if "%~1"=="" (
    echo Usage: Drag and drop files onto this script to rename them.
    echo The script will rename files to lowercase and replace spaces with underscores.
    pause
    exit /b
)

:: Initialize counter
set "count=0"

:: Loop through all the dropped files
for %%F in (%*) do (
    set "filename=%%~nF"
    set "extension=%%~xF"

    :: Convert to lowercase and replace spaces with underscores
    set "newname=!filename: =_!"
    set "newname=!newname!!extension!"

    :: Convert the name to lowercase using PowerShell
    for /f "delims=" %%L in ('powershell -Command "(\"!newname!\").ToLower()"') do set "lowername=%%L"

    echo !filename!!extension! to !lowername!

    :: Rename the file
    ren "%%~F" "!lowername!"

    :: Increment counter
    set /a count+=1
)

:: Display results
echo %count% file(s) have been renamed.
pause