RenameUnidcode - ISE

$targetDirectory = "%APPDATA%" # Set your target directory here

# Function to remove non-ASCII characters
function Remove-NonAsciiCharacters {
    param ([string]$InputString)
    $OutputString = $InputString -replace "[^\x00-\x7F]", ""
    return $OutputString
}

# Get all files in the target directory recursively
$files = Get-ChildItem -Path $targetDirectory -Recurse -File

foreach ($file in $files) {
    $newName = Remove-NonAsciiCharacters -InputString $file.Name
    # Check if the new name is different and not empty
    if ($newName -ne $file.Name -and $newName -ne "") {
        $newFullPath = Join-Path -Path $file.DirectoryName -ChildPath $newName
        # Check if a file with the new name already exists
        if (-Not (Test-Path -Path $newFullPath)) {
            Rename-Item -Path $file.FullName -NewName $newName
            Write-Output "Renamed `"$($file.Name)`" to `"$newName`""
        } else {
            Write-Output "Cannot rename `"$($file.Name)`" to `"$newName`" because a file with the new name already exists."
        }
    }
}