Zipping and Unzipping Files on Your Mac

File Management


This tutorial consists of several parts, each part consists of tutorial which you can jump to as per your need. They have been put in a order to describe the general purpose and the steps need not be in the specific order described below.

This guide will help you to:

Enable/Disable Automatic Archiving of Files

When you download a file from the internet your Safari browser automatically unzips the file. This can cause problems when you try to download a backup file from Moodle 1.9 because it is archived using the zip compression tool. There are several reasons why you may want to disable the auto-unzipping of zip-compressed files. Remember that you can always enable or disable it in a few simple steps.

To disable the automatic unzipping of files

  1. Locate Safari dropdown menu in the menu bar.
  2. Select Safari > Preferences option.

  1. Under your General tab at the bottom should be a checkbox that says Open “safe” files after downloading, Uncheck the box. This will prevent Safari from automatically opening the zip file. Opening a zip file unzips the file.

Note: You have just changed your browser default setting for downloaded media files, PDFs documents, and archives (zipped/compressed files). To restore it to the original setting follow the steps above and select the option to enable it.

Manually compress (Zip) files

  1. Select the files you want to zip.
  2. Right Click on the selected files
  3. Select Compress * Items, where * is replaced by the number of files you have selected.

Manually Decompress (unzip) Files

  1. Select the zip file.
  2. Right Click on the file.
  3. Select Open With > Archive Utility.

This work was done by Instructional Technology Resource Center at Idaho State University and is licensed under the Creative Commons Unported License. To view a copy of this license, visit Attribution Noncommercial 3.0 United States or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.