PasteGuard for Mac

What makes it different

PasteGuard is a free Mac menu-bar app that masks secrets on the clipboard the moment you copy them — API keys, passwords, emails, card numbers and more — so what you paste into ChatGPT, Claude, Slack or a terminal is already safe.

An optional on-device Apple Intelligence check catches what the built-in rules miss. For things only you know, custom rules, CSV word-list imports and an Ignore list cover the rest, and Restore puts the real values back when you need them.

Everything runs on your Mac: no account, no special permissions, nothing leaves the device. Free includes auto-mask and all detection rules; Pro, coming soon at $1.99/mo, adds custom rules and CSV lists.