PasteGuard for Mac

What it does

PasteGuard masks emails, phone numbers, API keys, card numbers and other private data on the clipboard the moment you copy, before you paste them into an AI chat, a team chat or an email. Free for Mac. Everything runs on your Mac.

Copy as usual. PasteGuard masks emails, API keys and card numbers on the clipboard right after you copy, so the secrets you'd paste by accident turn into masks. Auto-mask needs no Accessibility permission. See what it doesn't catch . The real app on macOS, with test data: copy as usual, and only masks reach the AI. Nothing to remember and no shortcut to learn: PasteGuard works on the clipboard itself, so it covers what you paste wherever it goes. Copy text anywhere, as usual: a log, a config, a customer's message. 26 types in 6 groups: keys, passwords, emails, phones, cards and more, plus your own rules. Nothing leaves the Mac. Each value becomes a token such as [EMAIL_1] . The originals go…from pasteguard.byquan.app

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