Sign in with Google — sending needs a Drive folder of your own to park the sealed bytes in. Everything is decrypted right here in your browser; the cloud only ever holds ciphertext. Receiving never needs an account at all.
Not ready to connect? Start from the front page — write it or drop a file there, and it comes with you.
Enter your sync passphrase to decrypt.
Paste the recovery key you saved — the whole file is fine, it will find the key in it. A key saved from the browser extension works here too.
Don't have one? Then the passphrase is the only way in, and nobody — including us — can decrypt this without it.
Hand out your invite once, then only ever a password — which also picks the message. Reuse one to replace it; use a fresh one to add another.
Your link will carry this password, so it opens on one tap.
This is all they need. Anyone you send it to can open the message.
It can’t be recovered later — save it if you want to be able to tell someone by voice.
Point their phone at this. Two seconds, no typing, nothing to mis-hear.
This is the address, not a message. Whoever holds it can write to you and can open whichever message they have the password for.
Read this to whoever you're sending the address to, over a call or in person. If the words they read back don't match, don't trust this address.
Computing…
A password-protected shelf of files. Hand someone the address and password once; then keep changing what's on it — they always see the latest.
The password is the only thing keeping it shut — a warehouse sits around for weeks, so press New for a strong one rather than something short.
What one other person sees. It updates for them each time you save. They can only read — nothing comes back.
Runs one real send end to end — encrypt in chunks, upload resumably to your Drive, fetch it back the way a recipient's browser would, decrypt it and compare every byte, then register and resolve a short code. About 9 MB, and it deletes everything it makes.
Send your share links through a viewer hosted on your own domain — your brand, your own Google quota. Leave blank to use the default. This changes only the host in your links; the encryption and the short code are unchanged.
Permanently delete everything KTRD stores in your Google Drive — every saved tab group, note, share link, sent file, and your mailbox. Your Google account stays connected; only your data is erased. This can’t be undone.