// seal

Lock it before it leaves the browser.

Encryption happens here, on your machine. The plaintext and the key never touch the network. No token needed to seal.

Drop a file here, or click to choose

any type · encrypted with a fresh AES‑256 key

idle

Now store it in the bucket

Your sealed file is ready in this tab. Put it into the bucket under the exact name below. The sealed link works the instant the file appears.

Download the sealed file with the button below.
Open your bucket and drag the file onto the page, keeping the exact name uuid.enc. Or use the terminal command below.
Done — the sealed link decrypts it.