How to add a watermark to a PDF

Overlay a short text on every page to mark a draft, an internal document or a confidentiality notice.

Updated Aug 21, 2026

A text watermark makes the document’s status obvious: draft, confidential, internal copy or who issued it. In ToolZen it is a short, opaque text repeated on every page.

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Legitimate uses

  • Draft: so nobody treats a working version as final.
  • Confidential or internal use: a visible notice on every page of a document that should not circulate outside.
  • Identification: a name, a case number or “copy for review” when several people handle the same PDF.
  • Internal team documents: mark the origin without encrypting the file.

Add the mark step by step

  1. Choose the text and positionPrepare a short notice (up to the tool’s character limit): Draft, Confidential, Internal copy, your name, and so on.
  2. Upload the PDFOpen the watermark tool, type the text and choose centre, top or bottom.
  3. Download the marked PDFThe same mark is overlaid on every page. The text is opaque: there is no transparency control in this version.

Avoid unusual characters in the text: the tool accepts letters, numbers, spaces and simple punctuation. It does not promise a legal seal or a digital signature; it is a visible everyday mark.

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Quick answers

Frequently asked questions

Can I put a logo?

No. Text only. There is no graphic watermark or image upload in this tool.

Is the mark semi-transparent?

No. The text is drawn opaque. There is no opacity control.

Does it apply to every page?

Yes, the same stamp on each page. On PDFs with different page sizes it may not line up the same on all of them.