Default compression - What it is, how to change it

When you install WinZip a default compression method is set. WinZip will use the default compression method each time you create a Zip file (.zip or .zipx) unless you manually change it in the New WinZip File dialog (or the Add dialog). This default compression method will apply whether you are creating Zip files using the WinZip ribbon interface or the Legacy menus/toolbar interface. The default compression method will also be used when you create Zip files from the context menu.

Changing the default setting while installing causes WinZip to set the compression method to .Zipx: Best method. Best method compression provides significant compression improvements over legacy Zip compression. This means that Zip files you create will:

• Be the smallest size possible with WinZip
• Use advanced compression methods where applicable
• Use the .zipx extension to clearly distinguish advanced compression Zip files from Legacy Zip files (.zip)

Note: Configuring a different compression method for .Zipx in the Settings Tab of the WinZip ribbon interface (WinZip 14.5 or later) will change the behavior and results described above.

If the Zip files that you create will be shared with others who may not have a compatible WinZip version installed, you are welcome to have them download and install the latest evaluation version of WinZip.

If installing a new build of WinZip is not acceptable for your recipient, you will likely want to configure your default compression setting to use .Zip: Legacy compression.

Follow the instructions below to change the default compression setting in WinZip.

WinZip ribbon interface

1. Open WinZip
2. Click the Settings tab and click Options
3. In the Miscellaneous tab of the Configuration dialog either uncheck or check the box next to Create new Zip files using the (.zipx) file type
4. Click OK

Legacy menus/toolbar

1. Open WinZip
2. Click Options, choose Configuration, and click the Miscellaneous tab
3. In the bottom right of this tab either uncheck or check the box next to
   Create new Zip files using best compression (.zipx)
4. Click OK

If you have any questions about this information please email Technical Support.

Related Articles:
What is the difference between "Legacy" and "Best method" compression?
How to activate (or re-activate) WinZip's shell extension
A quick example of how to zip files with WinZip
Is WinZip compatible with older versions of WinZip and other Zip file utilities?