Save one Google Slide as pdf with Google Apps Script while preserving the format

Question

The solution provided in this answer is correct but in my experience, a slide in 4:3 format will be saved as a pdf in the 16:9 format, which scrambles the contents.

How can I save a Google Slide to pdf and make the output pdf preserve the original slide format?

Answer 1

Simple Solution:

function SaveAsPDF() {
  var googleSlidesId = "#############################" //replace with presentation id
  var slidesBlob = UrlFetchApp.fetch("https://docs.google.com/presentation/d/"+googleSlidesId+"/export?format=pdf").getBlob();
  var pdf = DriveApp.createFile(slidesBlob);
  Logger.log(pdf.getUrl());
}

UrlFetchApp