1. Download the Installer
Click http://www.ccleaner.com/go/get_ccmac and the installer will automatically start downloading.
2. Run the Installer
Open the Downloads folder in the bottom right of the screen, and then click on "CCMacSetup.dmg". The installer will automatically run.
3. Drag CCleaner into Applications
A box will appear allowing you to drag the CCleaner icon into a representation of your Applications folder. You can then open this folder and click CCleaner to get started!
I've purchased CCleaner Professional for Mac and need to download it again. How can I do this?
You can either download the free version as detailed above, then register it by clicking Options > About > Upgrade to Pro and entering your license details. Or, you can request a new download link using our handy license lookup tool.
macOS 10.15 'Catalina' provides an error when attempting to open the CCleaner installer.
You can find out more about this 'Gatekeeper' prompt and how to correct it in our article on the subject.