Secret Keeper

Secret Keeper is a local end-to-end encryption extension. • Encrypt and decrypt secret messages on any website: pick a recipient, paste an envelope — decryption happens locally. • Offline chats: message history is stored encrypted inside the extension. • Encrypt and decrypt files (.skf containers). • The profile is protected by a PIN and biometrics (WebAuthn), with an optional duress PIN. • Websites connect only with your explicit permission (pairing with a visual code); linked sites are managed in settings. • No servers: keys are generated and stored only in your browser, the extension sends nothing anywhere. Compatible with the Secret Keeper apps for Android, iOS, macOS and Windows: the same address and seed phrase work everywhere.