Lock a file with a passphrase using AES-256 — right in your browser. We never see your file or your passphrase. Drop a .nearseal file back in to decrypt it.
→ 0 files sent to a server · encryption runs on your device
Emailing a sensitive document or storing it in the cloud exposes it to whoever runs the server. NearSeal encrypts files locally with AES-256-GCM and a key derived from your passphrase (PBKDF2), so only someone with the passphrase can open them. Nothing is sent to a server and no account is required.