KS-Merge emblem KS-Merge Merge and share — be in control.
For individuals & solo professionals · no signup to try

Send documents that stay under your control.

Most ways to send a file hand it over and forget it. KS-Merge lets you expire the link, lock it with a passcode, watermark it to the recipient, see when it's opened, and revoke it any time — even after you've hit send.

Send one free · no signup → See pricing
No account · passcode-protected · auto-deletes in 24 h
Control after you hit send

Six things a plain email can't do

Links that expire

Set an expiry date and the link stops working — no more files living forever in someone's inbox.

Passcode lock

Protect the download with a passcode you send separately. Three wrong tries and the link locks itself.

Revoke any time

Changed your mind, sent to the wrong person, deal fell through? Kill the link instantly — even after it's out.

Know when it's opened

See when your document was viewed and downloaded, with a full access trail. No more wondering if it arrived.

Watermarked to them

Each recipient gets a copy stamped with their name, so if it ever leaks you know exactly whose it was.

Auto-erase

Files delete themselves on a schedule you choose. Nothing sensitive lingers on a server after it's done its job.

Made for

Anyone sending something they'd hate to leak

Freelancers & consultants
Contracts, invoices and deliverables — sent with proof of receipt.
Landlords & tenants
Leases and IDs, shared without leaving copies floating around.
Job seekers
Passports, payslips and references — expire the link once they've looked.
Health & finance
Medical, tax and bank documents, passcode-locked and auto-erased.
Notaries & bookkeepers
Client paperwork with a clean, timestamped access trail.
Just cautious people
Anything you'd rather not trust to a plain email attachment.
Why not just email it?

Send it and forget it — or send it and stay in control

You want to… Plain email KS-Merge
Expire the link No — Lives in their inbox forever ✓
Passcode-protect it No — Anyone the email reaches can open it ✓
Revoke after sending No — Hit send and it's gone for good ✓
See when it's opened No — You never find out ✓
Watermark per recipient No — One forward and it's untraceable ✓
Auto-delete on a schedule No — Sits on servers indefinitely ✓
Recipient needs no account ✓ ✓
Why KS-Merge

Because “sent” shouldn't mean “out of your hands”

✓
You stay in control
Expire, lock, or kill any link — even after you've hit send.
✓
You're never left guessing
See the moment your document is opened and downloaded.
✓
Leaks point back
Every copy is quietly stamped with who received it.
✓
Nothing lingers
Files delete themselves on the schedule you choose.
✓
Effortless for the other side
They click, enter the passcode, and they're done — no account, no app.
✓
Quietly professional
Clean, watermarked documents with a tidy record of every step.
Pricing

Start free. Upgrade when you send more.

Every plan includes the full toolkit — expiring links, passcodes, receipts, watermarking and auto-erase. Cancel any time.

Free
$0
no signup
  • 1 secure send at a time
  • Passcode + 24 h expiry
  • Watermarked output
  • Nothing to install
Send one free →
MOST POPULAR
Personal
$8 /mo
per month
  • Unlimited secure links
  • Custom expiry & download caps
  • Open / download receipts
  • 50 GB storage
Start Personal
Pro
$12 /mo
per month
  • Everything in Personal
  • Certified, tamper-evident copies
  • Per-recipient watermarking
  • Priority support
Start Pro
Need it for a team or a law firm? See KS-Merge for firms →
Questions

Straight answers

Does the person I send to need an account?
No. They get a link, enter the passcode you shared separately, and download. No signup, no app — it works on any phone or laptop.
Can I really revoke access after I've sent it?
Yes. Kill the link any time from your dashboard and it stops working immediately, even if you already sent it. Expiry dates and download caps do the same automatically.
How long is my file kept?
You choose. By default shares auto-erase on a schedule, so nothing sensitive lingers. Delete it yourself the moment it's done, too.
Is it actually secure?
Your file is locked away and only opens for someone with the passcode you shared — a passcode we never see. Every open is recorded so you know who looked, and on the free trial everything is wiped after 24 hours.
What can I send?
PDFs and images (PNG/JPG). You can also merge several files into one tidy, watermarked PDF before you send it.

Send your first secure document now.

No account, no card. Passcode-protected, auto-deletes in 24 hours. See how it feels to stay in control.

Try it free →