Passwords, URLs, account numbers, private messages — whatever you last copied with Cmd+C is sitting on your Mac's clipboard right now. macOS doesn't clear it automatically. CleanMachine does. One click.
The macOS clipboard is a single persistent slot. It holds whatever you last copied with Cmd+C — until you copy something else, or until you restart your Mac. There is no automatic expiry.
That means if you:
...it's still there, in full, on your clipboard right now. Anyone who sits down at your Mac can paste it anywhere — Notes, Messages, a browser address bar — and read it instantly.
The built-in macOS way: open Terminal and run pbcopy < /dev/null. That replaces clipboard content with nothing. Effective, but it requires opening Terminal every time.
CleanMachine's Clipboard Wiper shows you what's on the clipboard right now (type, size, preview) and clears it with one click — no Terminal needed. Cave Mode goes further: it clears the clipboard automatically when you exit, along with browser history, DNS cache, QuickLook thumbnails, and recent file lists — one tap for a complete wipe.
pbcopy < /dev/nullShows what's on your clipboard and clears it with one click. No Terminal. Works on text, images, URLs, files — anything you copied.
Enter Cave Mode, do your thing, exit — clipboard wiped automatically. Plus browser history, DNS cache, QuickLook thumbnails, app session state, recent files. All at once.
Safari, Chrome, Firefox, Brave, Edge — all cleared simultaneously. Caches, downloads list, search suggestions, history.
Your Mac logs every domain it resolved — completely separate from browser history, invisible to incognito. Flushed automatically in Cave Mode.
Download CleanMachine free and try the Clipboard Wiper. Full access to Cave Mode, Privacy Cleaner, and everything else is $19.99 — once, no subscription.
macOS 13+ · No subscription · 30-day refund · 100% local
The quickest manual way: open Terminal and run pbcopy < /dev/null. That replaces the clipboard with empty content. CleanMachine's Clipboard Wiper does the same thing with one click — no Terminal needed. Cave Mode wipes it automatically when you exit.
No. macOS holds the last copied content until you copy something else — or until you restart. If you copied a password, URL, or sensitive text, it stays on the clipboard indefinitely. You need to actively clear it.
Whatever you last copied with Cmd+C — text, a URL, an image, a password, a file path. macOS keeps it until overwritten. CleanMachine's Clipboard Wiper shows you what's there and wipes it with one click.
For clipboard specifically, yes. But there are other traces — browser history, DNS cache, QuickLook thumbnails, recent file lists. CleanMachine's Cave Mode clears all of these at once, including the clipboard, in a single tap.
There's no built-in macOS keyboard shortcut. You can copy an empty string manually (select nothing and copy) which sometimes works, or use Terminal: pbcopy < /dev/null. CleanMachine makes this one click — no Terminal, no workarounds.