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Updated 2026 · By ToolFern

Add a Watermark to a PDF

Stamp a text watermark onto every page of a PDF, words likeCONFIDENTIAL, DRAFT or your company name, so the document is clearly marked before you share it. It is free, instant and 100% in your browser, so your file is never uploaded.

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Drop your PDF here

or click to browse, we will stamp a watermark on every page

PDF only · nothing is uploaded

How to add a watermark to a PDF

  1. Add your PDF. Drag it onto the box or click to browse. The tool reads it on your device and shows the total page count.
  2. Type your watermark text. Use anything you like, such as CONFIDENTIAL, DRAFT, SAMPLE or your company name.
  3. Choose the look. Set the font size, the opacity and the layout. Pick Diagonal for a single slanted label, Centered for a flat label, or Tiled to repeat the text across the whole page.
  4. Add and download. Press Add watermark & download. The watermark is drawn on every page and a new PDF downloads instantly.

Why watermark a PDF?

A watermark tells anyone who opens the file how it should be treated, without changing a single word of the real content. Marking a contract as DRAFT stops a work in progress from being mistaken for the final version. Stamping a quote or report as CONFIDENTIAL reminds the reader not to forward it. Adding your business name across a portfolio or proposal makes ownership obvious and discourages people from passing the document off as their own. Because the mark sits on top of the page in light gray at a low opacity, the underlying text stays easy to read while the label is always visible.

The three layouts cover the common needs. A diagonal label is the classic look: one large line of text slanted across the middle of the page. A centered label sits flat and is good for short status words. The tiled option repeats the text in a grid so there is no clean corner to crop out, which is handy when you want stronger protection on samples and previews. Everything happens locally, so even sensitive files never travel across the internet.

Frequently asked questions

Does it upload my PDF?

No, the watermark is stamped in your browser; nothing leaves your device.

Can I change the text and style?

Yes, type any text and adjust the size, opacity and layout (diagonal, centered or tiled).

Does the watermark go on every page?

Yes, the same watermark is drawn on every page so the whole document is marked.

Will it hide the text underneath?

No, it is drawn in light gray at a low opacity by default, so the page stays readable. You can raise or lower the opacity.

Related: delete PDF pages · merge PDFs into one file.