Copy Canary — Sensitive Data Warning
Catch secrets before they leave the page.
Copy Canary warns before likely API keys, credentials, payment identifiers, or personal data are copied from web pages. Detection and paid rules run locally in Chrome, and copied values are never retained or uploaded.
Local-first, lifetime license
Recognizable API-key and token warnings
Private-key block warnings
Credential-assignment warnings
Conservative contextual entropy heuristics
Local redacted copy that replaces detected values
Accessible cancel and explicit copy override
Local-only operation with no clipboard history
Payment card, IBAN, and conservative PII warnings
Custom literal and safe regular-expression rules
Detector allowlists
Per-site protection policies
Content-free local audit counters
Lifetime entitlement with three activations
Product preview
See Copy Canary — Sensitive Data Warning in action
Current release artwork showing the main workflow, key features, and lifetime-license experience.
