Client-side encrypted file sharing with expiring access controls
About SEAL
SEAL is a web service for sending confidential files. Files are encrypted in the browser before upload, and recipients can access them through time-limited or single-use links protected with a password or email OTP. Senders can revoke access. The basic flow works without creating an account.
PlatformsWeb
✓ VerifiedSep 23, 2026
Key features
- Browser-side encryption before upload
- Expiring and single-use access links
- Password and email OTP protection
- Sender-controlled revocation
- No account required for the basic flow
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