Traceable sharing

Make every shared copy traceable

Turn on a team policy, or mark a single document in a data room, and every image, PDF and video someone downloads through a link gets the downloader’s name, email and date printed diagonally into the file. On view-only links, a watermark is tiled over the preview.

  • 25 GB free forever
  • No ads on download pages
  • No account needed to share
  • Free Windows and Android apps
Why upload.am

Two ways to make copies traceable

Stamp inside the file

The stamp is part of the downloaded file, so it cannot be removed by closing a browser overlay.

Watermark on view-only

The recipient’s email, or their IP address and the time, is tiled over the preview.

Per document or per team

A team policy stamps everything, or you mark single documents in a data room.

A deterrent, not magic

It discourages leaks and shows the source. It cannot stop someone photographing a screen.

upload.am vs. a typical file hosting service

Most free file hosts give you one thing: a link. upload.am is cloud storage and backup with built-in secure file sharing built in. Here is the difference for this feature:

On the free plan upload.am Typical file host
Name, email and date printed into downloaded files Included Not available
Stamp images, PDFs and video Included Not available
Watermark on view-only previews Included Limited
Team-wide policy Included Not available
More than a file sharing link

Cloud storage, backup and secure sharing in one free account

upload.am is cloud storage and backup with secure file sharing built in: a cloud cabinet that keeps your files, a backup service that protects your folders and photos, a sync service that keeps your computer and your cabinet identical, and sharing controls (password, expiry, download limits) on top. One login, one storage pool, one set of links.

Cloud storage

25 GB free, folders, search, previews, versions and trash in your online file manager.

Backup service

The Windows app backs up the folders you choose. The Android app backs up photos, video, audio and contacts.

Sync service

Live sync in the Windows app keeps a folder identical on your PC and in your cabinet, including files added from the web.

Secure file sharing

Password, download limit, expiry, group links, Inbox and Drop Rooms.

Get the free Windows app See every feature

What gets stamped

  • Images, PDFs and video downloaded through a link.
  • Other file types download unchanged.
  • PDF stamping needs the qpdf tool on the server, video needs ffmpeg.
  • On view-only links, the preview watermark is shown on the page, not stamped into the file.

Which plans include it

The preview watermark is part of view-only links. The in-file stamp is a team policy and a data room option. See plans and pricing.

How to switch it on

  1. 1

    Open team policies

    Enable the stamp, or mark a document in a data room.

  2. 2

    Share a link

    Send the link as usual.

  3. 3

    Recipient downloads

    The copy carries their name, email and date.

  4. 4

    Trace a leak

    If a copy appears somewhere, you know whose it was.

Frequently asked questions

Can the stamp be removed?

It is printed into the file, not an overlay.

Which files?

Images, PDFs and video.

Does it stop screenshots?

No. It makes leaks traceable.

Do I need a team?

The stamp is a team policy or data room option.

Related features

Data room

A virtual data room for deals and audits: NDA gate, per-document rights, Q&A and a report of who opened what.

Learn more →

Password-protected links

Lock any download link behind a password. Set it while uploading, no account required.

Learn more →

E-signature

Send a PDF to up to ten people to sign in order, with a certificate of completion. Signers need no account.

Learn more →

All features · Plans and pricing · FAQ

Know whose copy it is

Book a demo to see stamps and data rooms.

Create a free account Plans and pricing

25 GB free. No credit card required.