PDF Watermark

Add a text or image watermark to every PDF page online — free PDF watermark tool.

PDF file

About

About the PDF Watermark

Stamps a diagonal text watermark, or a centred image watermark, across every page of a PDF.

Businesses use it to mark a draft contract or proposal as CONFIDENTIAL before circulating it, while photographers and designers use it to stamp a logo watermark across proof documents shared with clients. It's one of many free PDF tools on Toolapt, and like every tool here, it's free to use with no sign-up and no limit on how many times you run it.

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Guide

Using the PDF Watermark

  1. 1

    Step 1

    Choose or drop in one PDF file.

  2. 2

    Step 2

    Pick Text or Image as the watermark type.

  3. 3

    Step 3

    For text, enter the wording, size and opacity; for an image, upload it and set its width and opacity.

  4. 4

    Step 4

    Click "Add watermark and download" to save the stamped PDF.

  • Text watermarks are stamped diagonally across the centre of every page, like a classic "CONFIDENTIAL" stamp
  • Image watermarks are centred and scaled to a percentage of the page width you choose
  • Adjustable opacity for both types, so the watermark can be subtle or bold
  • Works entirely in your browser — no installs and no sign-up
  • Free to use, with no limit on how many times you run it
  • Fully responsive, so it works just as well on a phone as on a desktop

Businesses

Businesses use PDF Watermark for marking a draft contract or proposal as CONFIDENTIAL before it's circulated.

Photographers and designers

Photographers and designers use PDF Watermark for stamping a logo watermark across proof documents shared with clients.

Publishers

Publishers use PDF Watermark for adding a review-copy or sample-chapter watermark to a document before it's widely shared.

Anyone sharing a draft

Anyone sharing a draft uses PDF Watermark for making clear a document isn't the final version.

Examples

PDF Watermark examples

3 worked examples

01

A confidential draft

Choosing Text, typing "CONFIDENTIAL" at 48pt and 25% opacity stamps that word diagonally across every page of a draft contract before it's circulated.

02

A logo watermark on proofs

Choosing Image and uploading a logo at 30% page width and 40% opacity centres a semi-transparent brand mark on every page of a client proof.

03

A review-copy stamp

Typing "SAMPLE — NOT FOR DISTRIBUTION" at 36 pt and 25% opacity — a little smaller than the default 48 pt, so the longer phrase fits — marks every page of a review copy before it's shared with reviewers.

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FAQ

Frequently asked questions

Quick answers to common questions about the PDF Watermark.

What does PDF Watermark do?

It stamps a text or image watermark across every page of a PDF, at a size and opacity you control.

Is PDF Watermark free to use?

Yes. It's free, with no sign-up, no watermark on the tool itself, and no limit on how many files you stamp.

Is my file safe when I use this tool?

Yes. Your PDF is stamped entirely in your browser using a small PDF library loaded from this site — it's never uploaded to a server.

What's the difference between a text and image watermark?

A text watermark stamps your chosen wording diagonally across the page at the size and opacity you set. An image watermark places an uploaded image, centred, scaled to a percentage of the page width.

Can I remove a watermark I've already added?

Not with this tool — it only adds watermarks. If a page still has an editable original without the watermark, start from that file instead.

Does the watermark cover every page the same way?

Yes. The same watermark, at the same size, position and opacity, is applied to every page in the document.

Can I use PDF Watermark on my phone?

Yes. The page is fully responsive and works on mobile, tablet and desktop browsers alike.

Does PDF Watermark have any limitations?

It works on standard PDF files; a password-protected PDF needs to be unlocked first with the Unlock PDF tool before a watermark can be added.

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