I have run some Mac cleaners, and they list GBs of system junk files. What is system junk, and can I delete it from my Mac? Is it safe to do so?
I discovered that “System junk” is kind of a marketing term, honestly.
Usually it means things like:
cache files
temporary files
app leftovers
language files
old update packages
Yes, a lot of it can be deleted safely. macOS is generally pretty good at rebuilding caches automatically. But not all junk files can be deleted, as some are related to the app or the system performance.
If you are going to tidy up your Mac, you’d better use a professional Mac cleaning tool like iBoysoft Cleaner.
This tool supports AI-driven scanning and analysis for the system junk on a Mac. It will tell you what to delete and what to keep.
The system junk files on a Mac are the system and app caches. You can find them in the Library folder in your user folder.
However, not all of them are safe to be deleted. Think twice before removing them.