End-to-end encrypted cloud storage
Terebyte encrypts everything on your device before it’s uploaded, with a key only you hold. What reaches our servers is ciphertext — to us, to our providers, and to anyone who asks.
01/How it works
Most services encrypt your files once they arrive — with keys they keep. Terebyte does it in your browser, so the key never has to leave it.
Creating a vault makes your browser generate a 256-bit master key. We only ever receive it sealed under your passphrase — a lock we can’t open.
Files are split into chunks and encrypted with AES-256-GCM, each version under its own key. File and folder names are encrypted too.
Our servers keep the ciphertext and what’s needed to deliver it: sizes and timestamps. Anything we could hand over would be unreadable.
02/Features
Sharing, versions and recovery — rebuilt so that none of them need us to see your files.
The key rides in the part of the link browsers never send to servers. Add a password, set an expiry, revoke whenever you like.
Lease agreement.pdf
812 KB · pinned to version 3
Upload a new version without losing the old one. Download or restore any earlier version in one click.
We can’t reset your passphrase — so you get a recovery key instead. Store it offline; it’s the only other way in.
Shown once · kept offline · yours
Folders, drag-and-drop uploads, grid or list. Everything you expect, encrypted before it leaves the page.
Invoice 0412.pdf
Floor plan.png
Notes.md
03/Security
A privacy policy describes what a company chooses not to look at. This is what our system is unable to read, however hard anyone asks.
Not a policy — a property of how the system is built.
Most cloud storage asks you to trust a policy. Terebyte asks you to trust mathematics.
04/Pricing
Every plan includes every feature. The only difference is how much you can store.
1 TB
For photo libraries and working files.
$9.99/ month
or $99.99 billed yearly
2 TB
For large libraries and long-term backups.
$19.99/ month
or $199.99 billed yearly
Included in every plan
05/FAQ
Use your recovery key to set a new one. If you lose both, your files can’t be recovered — not by you, and not by us. That’s the cost of real encryption, and why we ask you to keep the recovery key offline.
Signing in proves who you are. Your passphrase unlocks your encryption keys, and it never leaves your device — so neither Google, your email provider nor Terebyte can open your files.
The key sits in the part of the link after the #, which browsers never send to servers. Add a password and the recipient needs both. Links can expire, and you can revoke them at any time.
No. File contents and names are encrypted in your browser with AES-256-GCM before upload. We see sizes and timestamps, which we need to store your data and apply your plan’s limit.
You choose: save it as a new version or keep both. Earlier versions stay in the file’s history until you delete them, and share links stay pinned to the version you shared.
You can download everything you store, up to 3 times over each month, and at least your plan’s minimum from day one (3 GB on Free, 300 GB on Starter, 600 GB on Pro and 1 TB on Power). Most people use a small fraction of that, and we’ll warn you well before you hit it.
Any time. Nothing is moved or re-encrypted — only your storage limit changes.
Start with 5 GB, free. Upgrade when you need more space — never to get more privacy.