convert files into PDFs of a driveApp folder

[Meherr]

function createPdf(){

  const id = "your_folder_id";

  const folder = DriveApp.getFolderById(id);

  const files = folder.getFiles();

  const folderDes = DriveApp.createFolder("NEW PDF FOLDER")

  while(files.hasNext()){

    const file = files.next();

    const blobFile = file.getAs("application/pdf");

    blobFile.setName('PDF' + file.getName()+ ".pdf");

    const newFile = folderDes.createFile(blobFile);

    Logger.log(newFile.getUrl())

  }

}