Drop a file, set a passphrase, done. Everything happens inside your browser, so your files and password never touch a server. No account, no catch, free for life.
Recommended: tap the dice to generate a strong passphrase.
The generator draws six random words from the 2048-word BIP39 wordlist, the same list behind crypto wallet seed phrases. That is about 66 bits of entropy: strong enough to shrug off any brute-force attack, yet simple to write down or remember.
Enter the exact passphrase this file was encrypted with. It is the only key, never stored anywhere, so a wrong passphrase just fails and there is no recovery.
Standard protection, plenty for most files. Flip on to make each brute-force guess far costlier. Not recommended for low-RAM devices.
Pick your own, or generate a strong one. It is the only key, and it never leaves your device.
Your passphrase is stretched into a 256-bit key with Argon2id, the algorithm built to defeat password cracking.
XChaCha20-Poly1305 encrypts the file in chunks and signs each one, so any tampering is detected instantly.
The result is indistinguishable from random noise. Without the passphrase it cannot be recovered, by anyone.
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