Compactar todos os PDFs de uma pasta usando Ghostscript e Powershell

compactar_pdfs.ps1

$sourceFolder = "c:\origem"
$destinationFolder = "c:\destino"

$ghostscriptPath = "C:\Program Files\gs\gs10.02.0\bin\gswin64c.exe"
$pdfSettings = "/ebook"

Get-ChildItem -Path $sourceFolder -Filter "*.pdf" | ForEach-Object {
    $outputFile = Join-Path -Path $destinationFolder -ChildPath $_.Name
    $arguments = "-sDEVICE=pdfwrite", "-dCompatibilityLevel=1.4", "-dPDFSETTINGS=$pdfSettings", "-dNOPAUSE", "-dQUIET", "-dBATCH", "-sOutputFile=`"$outputFile`"", "`"$_`""
    & $ghostscriptPath @arguments
    Write-Host "Converting file: $($_.Name)"
}