Media
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Description
Prevents accidental sharing of sensitive data in AI chats. Detects emails, phones, IBANs, cards, and more. Runs locally. PromptFence is a personal safety layer for AI chats. It helps prevent accidental sharing of sensitive information when using tools like ChatGPT, Claude, Gemini, and others. When you paste text into an AI chat, PromptFence checks locally for patterns that appear to contain sensitive data, such as email addresses, phone numbers, bank identifiers, card numbers, or credentials and pauses to let you review before sending. You stay in control at every step. How it works • Detects possible sensitive data as you paste into AI chat inputs • Shows a clear, calm warning when something looks risky • Lets you anonymize the text with one click or continue intentionally • Runs entirely in your browser — no servers, no tracking What PromptFence can detect • Email addresses • Phone numbers • IBAN / bank account identifiers • Credit card–like numbers • Addresses (basic patterns) • Passwords, API keys, and secrets Presets for different situations • Personal Safety – balanced, everyday protection • Finance – stricter handling of financial data • Health – extra care around identifying information • Workplace – helps avoid sharing client or colleague data • Developer – focused on credentials and secrets Privacy by design • 100% local processing • No data collection • No analytics • No network requests PromptFence doesn’t block your work — it helps you pause, understand, and decide.
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