About CCleaner for Mac rules

Note: this article is relevant to version 1.18.30 of CCleaner for Mac and below.
You can also find helpful information about the latest version of our macOS app.

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When you start CCleaner for Mac, you'll see two tabs (OS X and Applications) in the main window, each with several checkboxes. These checkboxes control many aspects of your system that CCleaner will clean.

CCleaner Professional - Cleaner window displaying settings available within this section

To tell CCleaner for Mac to clean a particular area of your system, select the check box.

The remainder of this section explains what the check boxes do.

Note: Depending on what programs you have installed on your Mac, certain sections and check boxes on the Applications tab may not be available.

To change CCleaner's other settings, see this section

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