When you meet the following situation:
1. Your Mac is running slow, or the pages are freezing and become unresponsive.
2. You are prompted with the error message “Your startup disk almost full” on your Mac.
…
Then it is time to clear up your Mac. This article will cover the solution on find out the files that are useless for you to release the space on your Mac. Let’s check it out.

How to clear Up Full Space on Mac with CleanMyMac 3
Step 1. Download and Install CleanMyMac 3
Step 2. Start to Scan Mac
Step 3. Clean Up Mac

learn more:Mac Cleaner: Clear Up Full Space on Mac