Diamond Digit

Seal, open, or send a file. Nothing leaves your browser unless it's locked first.

Zero Zip. Zero compression. Exactly what was sent. No more shrinking photos, splitting files into parts, or fighting attachment limits. Sealing locks a file so only the right key can open it — the diamond cracks if that's ever not the case, whether the key was wrong or the file was changed along the way. A sealed download needs a password you set yourself, shared however you like. A share link needs no password at all — it expires on its own, opens only a limited number of times, and you can switch it off early, any time.

Drop a file here, or click to choose one

Password (only needed if downloading — not for sending a link) Confirm password

Link expires after

Maximum times it can be opened

These settings only apply to a share link — a sealed download has no expiry, since it isn't tracked by any server.

download again

Your download started automatically. The extension is just a label — it isn't required to open the file, and needs no app installed. Share it however you'd normally send something; share the password separately.

Share this link — no password needed, it's built into the link Recipient's email (optional — only opens your own mail app, never sent anywhere) Add a message (optional)

Save this now — it's shown only this once. This code lets you revoke the link early. It's also saved to a "My sent links" list in this browser, so you can find it again later without needing to copy it now.

No password to share — the link itself is the key. Diamond Digit's server only ever holds locked, unreadable data — never the key, never the content, never the recipient's email.

Drop a sealed file here, or click to choose one

Password (not needed if you arrived via a share link)

This preview only exists in your browser's memory for this tab. Nothing is written to disk unless you choose to save it. This can't prevent someone from screenshotting or recording their screen — no viewer can.