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How to Add a Text Watermark to a PDF

By Rashad (Razzath) · Updated November 7, 2026

A watermark tells readers at a glance what a document is: a draft, a copy, confidential material, or something that belongs to your business. It also discourages careless reuse of your work.

The Watermark PDF tool adds your text to every page in your browser. You choose the wording, colour, rotation and how transparent it should be.

Open the Watermark PDF tool

How it works

A watermark is text or a graphic drawn on each page. A light, diagonal watermark stays readable without hiding the content below it. Remember that a watermark is a visible label, not security: someone with the right software can still remove it, so combine it with password protection if confidentiality matters.

When this is useful

Marking a document as DRAFT before it is approved.
Labelling financial or legal papers as CONFIDENTIAL.
Adding your company name to proposals and price lists.
Marking a sample or a preview copy.
Discouraging copying of coursework or designs.

Step-by-step instructions

Open the Watermark PDF tool and choose your PDF.
Type the watermark text and set colour, opacity and rotation.
Preview the result if available, and adjust the transparency.
Apply it, download the file, and scroll through every page.

Tips for the best results

Use opacity between 15 and 30 percent so the text is visible but not distracting.
A 45-degree rotation is the classic choice.
Use short, clear words in capital letters.
Add a password with Protect PDF for sensitive files.

Common problems and how to fix them

The watermark hides the text

Lower the opacity or reduce the font size.

The watermark is cut off

Shorten the text or reduce the size so it fits inside the page width after rotation.

What happens to your file?

This tool runs entirely in your browser, so your document is never uploaded to our server.

Frequently asked questions

Can the watermark be removed?

A determined person with editing software may be able to. It is a visible label, not a lock.

Does it affect the original?

No, a new file is created.

Is it private?

Yes. It runs in your browser.

About the author: Written by Rashad (Razzath), the independent developer behind PDF DocOffice in Dubai, UAE. Last updated November 7, 2026. Spotted a mistake or have a suggestion? Tell us and we will correct it.