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Mask API keys, passwords, and personal data in AI chats before they leave your browser. Runs 100% on-device. Stop leaking secrets into AI chat. OmniShield masks API keys, passwords, tokens, and personal data in your browser before your prompt is sent to AI chats. Unlike visual blur tools, OmniShield works at send time — so the AI provider never receives the raw secret. WHY PEOPLE INSTALL OMNISHIELD • Developers paste .env files, logs, and configs into AI tools every day • One accidental paste can expose production credentials • Free core masking works immediately — no account required • Pro unlocks smarter, context-aware replacements that keep answers useful HOW IT WORKS 1. Install OmniShield from Chrome 2. Chat as usual on supported AI sites 3. Matching secrets and PII are masked on your device before send FREE • Wire-level send-time masking • Pattern-based detection for keys, tokens, emails, cards, and more • Works on popular AI chat sites in Chrome • On-device processing — no account needed PRO (one-time unlock) • Context-aware, format-preserving masking • Screenshot / image OCR scanning • Healthcare-aware patterns • Custom local rules • Still on-device — OmniShield only verifies your license key PRIVACY Free and Pro process prompts locally in your browser. If you buy Pro, OmniShield only contacts our servers to activate and validate your license key — never to upload chat content. Learn more: https://omnishield.app Privacy: https://omnishield.app/privacy