Watermark PDF

Add a text watermark to every page – once diagonally or tiled across the page – with the opacity you choose. Free and private.

  • Free
  • Any text
  • No sign-up
  • No upload

or drop a PDF file here

One PDF file

Private: your PDF is processed in your browser and never uploaded.

How to watermark a PDF

  1. 1

    Add your PDF

    Choose or drop the file.

  2. 2

    Write the watermark

    Type the text and pick layout and opacity.

  3. 3

    Download

    Click “Add watermark”.

Why use this watermark tool?

  • Every page at once

    The watermark is placed on all pages, sized to each page.

  • 100% private

    Your PDF is processed in your browser and never uploaded – safe for contracts, invoices and ID documents.

  • Free, no limits

    No account, no watermark, no daily limit and no file size cap.

  • Works on any device

    Windows, Mac, Linux, iPhone or Android – nothing to install.

Popular uses

  • Marking drafts
  • Confidential documents
  • Copies of ID documents
  • Portfolio samples
  • Quotes and offers
  • Exam papers

Frequently asked questions

How do I add a watermark to a PDF?

Add the PDF, type the watermark text, choose diagonal or tiled and click “Add watermark”.

Should I watermark copies of my ID?

Yes – a watermark like “Copy for XYZ rental only” makes a stolen ID copy much less useful.

Are my files uploaded?

No. Everything runs in your browser; your PDF never leaves your device.

Is it free?

Yes. No sign-up, no watermark and no limit on the number or size of files.