title: Creating a zip file inside Google Drive with Apps Script
body: <p>I have a folder in Google Drive folder containing few files. I want to make a Google Apps Script that will zip all files in that folder and create the zip file inside same folder. </p>
  
  <p>I found a video that has <code>Utilities.zip()</code> function, but there is no API reference for that. How do I use it? Thanks in advance.</p>