Stamp an “Exclusive use of [recipient]” mark on any PDF to discourage forwarding and to trace the source of a leak. Everything happens inside your browser: the file is never uploaded to any server.
Got a Word or Excel file? Save it as PDF first (File → Export → PDF) and watermark it here. Why
The preview is indicative; the final PDF applies the stamp to every page in high resolution.
The process takes a minute and happens entirely in your browser. One: drag or choose the PDF you are going to share. Two: type the name of the person or company that will receive it. Three: adjust the watermark — repeated diagonal placement, a footer line or both, with the intensity and color you prefer. Four: generate and download the stamped copy. Your original file is not touched; the tool produces a new document whose name already includes the recipient, ready to send.
Printing the name of whoever receives a document across each of its pages does two things no “clean” file can. The first is deterrence: it is far harder to forward or leak a PDF that carries “exclusive use of [your name]” diagonally over all the text — the mark makes the recipient the visible party responsible for that copy. The second is traceability: if a version ends up where it should not, the document itself reveals who it was given to, because each copy went out with a different name. It is the standard practice for circulating contracts under negotiation, commercial proposals, financial statements, memos and reports — any sensitive material that leaves your control the moment you hit “send.”
Most online watermarking services ask you to upload the PDF to their servers — exactly what you do not want to do with a confidential document, because you lose control over where it is stored and who can see it. This tool flips the model: the library that edits the PDF travels inside the page itself, so the file is processed in your browser's memory and is never transmitted to any server. You can verify it by disconnecting from the internet: once the page has loaded, it keeps working. That is why it works just as well for internal use at a firm or company as it does for anyone who needs to protect a document before sending it.
The tool works on PDFs, and for a confidential document that is precisely the right way to share it. A Word or Excel file is editable: any watermark you add lives in the header, and whoever receives the file removes it in two clicks from the program itself — and Excel doesn't even have a real watermark that shows on screen. In a PDF the stamp is embedded on every page and is far harder to remove. That is why the professional step is to export your Word or Excel to PDF before watermarking it: in Word or Excel, File → Save as (or Export) and choose the PDF format; or File → Print → Save as PDF. With the PDF ready, you load it here and add the recipient's name. It is one extra minute that turns a free-floating document into one that truly deters and can be traced.
The watermark is the first layer; for high-value documents it is worth combining it with two more things. One, flatten the PDF after marking it with our tool to flatten PDFs: it turns each page into an image, so the stamp is embedded and cannot be removed by editing the text, and the content can no longer be copied either. Two, a read-only delivery, with downloading disabled and access via a specific email address. That is exactly how, at Strategium, we share our interpretations: technical analyses that reach each client marked to their name, as confidential input for their decisions. If you are interested in how to structure the circulation of sensitive documents — or any tax or wealth matter — also take a look at the other free tools and the blog.
Watermarking a PDF is free; what really moves your bottom line is what those contracts and financial statements represent: your tax regime, the structure of your wealth and your exposure to the SAT. That is what we do at Strategium — tax planning and strategy, wealth protection and defense. The first step is always the same: an honest diagnostic of where you stand.
Schedule a diagnostic on WhatsAppNo. The entire tool runs inside your browser using a PDF library embedded in the page itself. The file is not sent to any server and never leaves your device; you can even use it offline once the page has loaded.
It is free, with no sign-up and no usage limit. You can watermark as many PDFs as you want, of any size, as many times as you need.
It serves two purposes: it discourages the recipient from forwarding or sharing it, because their name is printed on every page; and it lets you trace the source of a leak, since each copy carries the name of whoever it was given to. It is the standard practice for sharing contracts, proposals, financial statements and confidential interpretations.
No. The tool generates a new copy with the watermark and downloads it with a name that includes the recipient; your original PDF stays untouched on your device.
The tool watermarks PDFs. For a Word or Excel file, export it to PDF first (File → Save as or Export → PDF) and then load it here; it is also the correct way to share a confidential document, because in an editable file the watermark can be removed in two clicks, whereas in a PDF it is embedded on every page. Excel, moreover, has no watermark that shows on screen.
Informational, courtesy tool. The watermark discourages sharing and helps trace the source of a copy, but it does not encrypt or technically lock the document, nor does it by itself prevent its reproduction. For confidentiality schemes with legal effect, the mark is combined with agreements and delivery controls suited to each case. Full detail is in the Terms of use.