Cleanup

CCleaner for Mac still exists, and it isn't malware. But macOS has no registry to clean, so the Windows habit doesn't transfer. Here's what it actually does on a Mac, the history worth knowing, and what to use instead.

Three different things get called cache on a MacBook Air, and most people asking this want the browser one. Here is how to clear each of them in Safari, Chrome and macOS, plus the part cleaner apps skip: clearing cache almost never makes a Mac faster.

You dragged it to the Trash and macOS refused, or it came back on its own. Here is every reason a Mac app won't delete, in the order it usually turns out to be, with the fix for each one and an honest answer for the case you can't fix yourself.

Apple Mail taking up space on your Mac? It keeps a local copy of every message and every attachment. Here's where it stores them and how to shrink it safely.

Slack, Discord, VS Code and Spotify can hoard multi-GB caches. How to clear app caches on Mac safely: quit the app, empty only its Cache folder, skip real data.

Dragging an app to the Trash removes only the .app bundle; its files stay in ~/Library. How to uninstall apps on Mac completely, by hand or with a free tool.

Is it safe to delete cache on Mac? Mostly yes for user caches in ~/Library/Caches; macOS and apps rebuild them next launch. Which to clear, which to leave.

Yes, old iOS backups on your Mac are safe to delete and can free tens of GB. Here's which ones to remove, the caveats, and the safe way to do it in Finder.

Wondering what you can delete on a Mac? An honest, tiered guide: what's safe (caches, Trash, backups), what to back up first, and what you should never touch.