Privacy you can verify, not just trust

Drop a file securely

Encrypted in your browser, then uploaded. Share a link they open anytime.

No account. No tracking. Just drop and go.

Mars, the red planet

Don't trust us. Verify us.

Your file is sealed in your browser before it ever leaves. Here's exactly what reaches Marsdrop — and what never does.

marsdrop --inspect
file encrypted locallyAES-256-GCM
key kept in URL fragment#a17f…(never sent)
server receivesciphertext only
metadata storedsize · expiry · count

Encrypted before launch

Sealed with AES-256 in your browser. Plaintext never leaves the ground.

We can't read it

The key rides in the link's # fragment — it never reaches our servers.

Gone on your terms

Set an expiry, a download limit, a password. Revoke any drop instantly.

Built for every kind of send

New here? See how it works or browse the FAQ.

Marsdrop — Encrypted file sharing that vanishes