PasteGuard intercepts sensitive data before it reaches ChatGPT, Claude or Gemini. Emails, credit cards, IBANs — masked automatically with one click. Free forever.
No manual steps. No copy-paste dance. PasteGuard works silently in the background every time you paste.
Copy anything — an email from your inbox, a document with client data, a config file with API keys. PasteGuard doesn't intercept your clipboard.
The moment you paste into a supported AI chat, PasteGuard detects sensitive patterns and replaces them with [EMAIL_1] placeholders — before the AI sees it.
The AI answers using the placeholders. PasteGuard then restores the real values in the response, highlighted so you can read them normally.
Every feature is designed to be invisible when things go right, and unmistakable when it matters.
All regex matching runs in your browser's content script. Zero network requests. Your data never leaves your machine.
Email, phone, credit card, SSN, API keys, IP addresses, IBANs, and Italian fiscal codes — each with its own color-coded indicator.
When the AI echoes a placeholder back in its response, PasteGuard automatically highlights the real value in context — so you always see the full picture.
Enable or disable any category from the popup in one click. Turn off phone detection when you're sharing contact info intentionally.
A compact notification appears only when PasteGuard acts. Built in Shadow DOM — it never conflicts with the page's own CSS or scripts.
Not just paste events — PasteGuard also intercepts Enter-to-send so that text you've typed directly is scanned before it's submitted.
Free users get the three most common categories. Pro users get full coverage — with more on the way.
No credit card required. Free tier stays free forever.
storage (to remember your category preferences) and activeTab (to run on the AI chat tabs you have open). We deliberately chose not to request broad host permissions — we only run on ChatGPT, Claude, Gemini and Copilot.[EMAIL_1] naturally — they understand it refers to an email address and respond accordingly. And when the AI echoes the placeholder back, PasteGuard restores the real value in the response, highlighted in the correct color.chrome://extensions → Details → Inspect views or by unpacking the .crx file. The extension requests only the minimum permissions needed and makes no undisclosed network requests.Start protecting your sensitive data in under 30 seconds. No account required.
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