Open ZI File

Information, tips and instructions

Open ZI File

The ZI and ZI_ are an alias file extensions representing the popular ZIP file compression format. These aliases are used to avoid mail and messaging server filters which can prevent ZIP attachments transfer via email.

To open a ZI file (ZI_), you need to change its extension to ZIP, which allows you to unzip the file using any application compatible with the ZIP standard. To rename ZI or ZI_ file in file explorer select the ZI file first and then click on its name again. Change file extension to ZIP and press enter. Alternatively you can click right mouse button on a file and select “Rename” option from the popup menu.

Programs that can open ZI file extension

The following list contains programs grouped by 3 operating systems that support ZI files. Files with the ZI extension, like any other file format, can be found on any operating system.


  • 7-Zip
  • StuffIt Expander
  • WinRAR
  • Winzip

Mac OS

  • StuffIt Deluxe
  • Linux
  • Unzip

How to open ZI file?

Step 1. Download and install WinZip

Select WinZip or any of the recommended programs (for example, 7-Zip, WinRAR, StuffIt Expander) and download it from the appropriate source and install it on your system. The safest method to download WinZip is to go to the developer's website and download the software using the links provided.

Step 2. Verify that you have the latest version of WinZip

The latest version of WinZip is compatible with previous versions and can handle various compression file formats.

Step 3. Associate ZI files with WinZip.

Right click on the ZI file and choose “Open with…" from the file menu. Click on "Choose another application" and then select the "More applications" option. To finish the process, select Search for another application on this PC and, using the file browser, select the installation folder for your ZIP software. Confirm by checking "Always use this application" to open ZI files and clicking on the OK button.

Open ZI file on Windows

  • Download WinZIP application from and launch it by double-clicking on it.
  • Launch WinZIP from the Start menu or Desktop. Click on File->Open archive in the WinZIP main menu.
  • In the file open dialog select ZI file you want to open and click "Open".
  • You will see contents of the ZI file and every file and folder stored in it.
  • Select files and folders you want to extract and click on the "Extract to" icon.

Get more information about how to open ZI file.

Also check how to:

If you are not able to open file with certain file extension make sure to check if extension for the file is correct. It is possible that information in the file doesn't match file extension.

File Extension Info

ZI Quick Info
  ZIP Archive Alias
  Synonym to ZI_ and ZIP
  not available
Opens with