Welcome back — open the web app
End-to-end encrypted — in your own Google Drive

Sharing data is one knock away.

Encrypted end to end, in a folder you own — and they need no account to open it.

Open something sent to you

Paste it, or type the two words — a space becomes the dash.

A wrong knock and an empty doorway look identical — so nobody can walk the corridor trying handles.

Send something Signs in to your own Google Drive when you send — not before — and only ever to files it creates for you.

Add a password to send

Letters and numbers, 2–20, lowercase. Leave it blank to keep the address you have, or to be given one.

Short passwords like fun are fine for something you wouldn’t mind a stranger reading. Anything else, press New — a short address is easy to guess and nothing rate-limits password guessing, so the password is what is keeping the message shut.

Your password doesn’t just unlock a message — it picks which one. Send a link that opens on one tap, or keep the password back and give it to them yourself. Either way they open it in any browser: no account, no app, nothing to install.

Free · nothing for them to install · works on any phone.

End-to-end encrypted · No account for them · Zero tracking · Your storage, your rules
How it works

Your code once. A password each time.

Hand someone your short code a single time. From then on, everything you send is just a password away.

01

Drop it in

Paste a note or attach a file — up to 512 MB. Set a password, and it's sealed on your device before it ever leaves.

02

Share your code

Send one link and they are in — the password travels inside it, in the part of a URL that never reaches any server. Or keep the two apart: tick send the password separately and they'll need it from you as well.

03

They open it

Any browser, no account, nothing installed. It's fetched from your Drive and decrypted right in front of them — an image even previews inline.

What you get

A mailbox only you can fill

One permanent address, many messages — each behind its own password.

Notes and files

A batch of links, a document, an image. Images preview right on the page; everything else is one tap to download.

Encrypted end-to-end

Sealed on your device before it touches Drive. Google only ever sees ciphertext, and we hold no key that could decrypt it.

One code, many messages

The password both picks the message and unlocks it. Reuse one as a standing drop for a regular contact, or a fresh one for a one-off.

Privacy

We can't read what
you send. That's the point.

There is no KTRD account, and no server of ours ever receives what you send. What you send is encrypted on your device and parked in your Google Drive; the password that opens it is never stored, and never reaches us. We couldn't hand your messages over if we tried — we don't have them.

How the encryption works
FAQ

Good questions

What does the person receiving need?

Nothing. They open a plain web page in any browser — no account, no sign-in, no install — type the password you gave them, and the message decrypts right there. Perfect for a shared or work computer you'd rather not log your accounts into.

What does the password do?

Two things: it picks which message the reader gets, and it decrypts it. A wrong password and an empty mailbox look identical, on purpose — so no one holding your code can probe for what's inside. Send the password by a different route than your code, and keep it hard to guess.

How is it encrypted?

Every message is sealed on your device with a key derived from your password, before it's parked in your Google Drive. Google — and we — only ever see ciphertext. Files ride in their own encrypted object; only a tiny pointer sits in the mailbox.

Can I expire it or take it back?

Yes. Give any message an hour, a day, a week, a month, or no expiry at all — and remove it whenever you like. Once it's gone or expired, the password opens nothing.

What does it cost?

Nothing. It rides on the Google Drive storage you already have, so there's no bill to pass on to you.

Do you also do browser tabs?

Yes, but a separate product does it. A browser extension saves, encrypts and syncs your open tabs across Chrome, Edge and Brave — same encryption, different job. See the tab-sync extension →

Send something now.

Drop in a note or a file, set a password, and hand over your code. They open it in seconds.

Free. No account to create, no tracking, ever.