LuxSign

Add a watermark to a PDF

Mark a document as draft, confidential, or copy — on every page.

Files never leave your device Runs in your browser 3 free operations with a free account

A watermark states how a document is meant to be treated. Marking a draft as DRAFT stops it being mistaken for the final version, and marking a copy as CONFIDENTIAL makes its handling explicit before it is shared. The text is applied across every page. Everything runs in your browser — the file is never uploaded to a server, so it never leaves your computer.

How to add a watermark to a pdf

  1. 1

    Open your PDF

    Select the document you want to mark.

  2. 2

    Enter the watermark text

    Type the wording — CONFIDENTIAL, DRAFT, or anything else you need.

  3. 3

    Apply

    The watermark is drawn onto every page in your browser.

  4. 4

    Download

    Save the watermarked copy.

When you would use this

Questions

Can the watermark be removed by the recipient?

It is drawn into the page content, so it cannot be toggled off in a PDF reader. It is a clear visual marking, not a security control — treat it as a label rather than protection.

Does it go on every page?

Yes, the watermark is applied across the whole document so no page can be circulated without it.

Can I still read the document underneath?

Yes. The watermark is drawn so the underlying text stays legible.

Need to sign the document too?

LuxSign signs PDFs with electronic signatures that are legally valid across the EU under eIDAS — from a simple drawn signature through to a qualified electronic signature (QES) made with your eID smartcard, which carries the same legal weight as signing by hand.

See how signing works

Other PDF tools