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Watermark PDF

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Add a text or image watermark across your PDF pages to protect or brand your documents.

Drop a PDF here to watermark
or click to browse
PDF files only - processed entirely in your browser
🔒 Privacy first

Your files are processed entirely in your browser. Nothing is uploaded to any server, and your documents never leave your device.

What is Watermark PDF?

A Watermark PDF tool overlays text or an image across the pages of your document. You can add a word like "CONFIDENTIAL" or a company logo, then adjust its opacity, size, and angle so it sits behind or over your content. The watermark is drawn with pdf-lib in your browser, so branding or protecting a file never requires uploading it.

Why use Nuo Tools's Watermark PDF?

✓
Text or image
Stamp a word, phrase, or your own logo across pages.
✓
Adjustable look
Control opacity, size, rotation, and position of the mark.
✓
Every page
The watermark is applied consistently across the whole document.
✓
Private and free
Runs on your device with no upload, signup, or watermark fees.

How to use Watermark PDF

1

Upload your PDF by dragging it in or clicking the upload area.

2

Enter watermark text or upload a logo image.

3

Adjust the opacity, size, angle, and position until it looks right.

4

Click Add Watermark and download the branded PDF.

Frequently asked questions

Can I use my own logo as a watermark?+

Yes. Upload a PNG or JPG logo and place it across the pages, adjusting its size and opacity so it does not overpower your content.

Can I control how transparent the watermark is?+

Yes. Set the opacity so the mark is a faint background stamp or a bold overlay, whichever suits your document.

Is my PDF uploaded to add a watermark?+

No. The watermark is drawn onto the pages in your browser with pdf-lib. Your file never leaves your device, so it is safe for confidential documents.

Does the watermark appear on every page?+

Yes. The same watermark is applied across all pages so the whole document is marked consistently.

Can the watermark be removed later?+

Once applied, the watermark becomes part of the page and is not designed to be easily removed - that is what makes it useful for protection. Keep your original file if you need an unmarked version.

When to use this tool

  • →Marking a document as CONFIDENTIAL, DRAFT, or COPY
  • →Adding a company logo to branded reports or proposals
  • →Protecting a shared PDF with an ownership or copyright mark
  • →Labeling sample or preview documents before distribution
  • →Applying a consistent watermark across a batch of pages
About this tool
CategoryPDF Tools
PlatformBrowser (client-side)
CostFree forever
Account requiredNo
Data storedNone
Works offlineYes
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