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FileNest

Add a watermark to a PDF

Add a diagonal text watermark to a PDF in your browser. Pro can reuse a saved logo from a private watermark library.

Free up to 20 MB · files automatically deleted · see Pro for 200 MB

How to watermark pdf

  1. 1Drop a PDF.
  2. 2Write the stamp you want on the pages.
  3. 3Download the watermarked copy.
Free plan
Processed in your browser – nothing uploaded.

Files are processed temporarily and automatically deleted. Limits are shown before processing. Corrupted or unsupported files stop with a clear error.

Add a watermark when a draft should look like a draft. FileNest draws one line of text diagonally across each page, in your browser, using the size and strength you pick.

Short labels work best: DRAFT, SAMPLE, or the client name. Pro can also stamp a saved logo from the watermark library without re-uploading it each time.

Guides: Merge PDF online free · How to compress a PDF · All articles

Questions about watermark pdf

Can I use an image logo?

Pro members can upload a PNG or JPG once to a private watermark library and reuse it. Free and Guest use text stamps in the browser.

Is the watermark permanent?

It is drawn into the PDF content, so it stays when the file is shared.

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