Semrush AI Tools

Add Watermark – Free Online Tool

PDF TOOLS

Watermark PDF

Stamp your mark on every page: CONFIDENTIAL, DRAFT, your brand name — diagonal or tiled, as bold or as faint as you want.

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Drop your PDF here
or choose a file from your device — it never leaves your browser
Your PDF is ready

The watermark is drawn on top of every page and becomes part of the file. Everything ran locally in your browser.

HOW IT WORKS

How to Watermark a PDF

Follow these 3 simple steps to get your finished file in seconds.

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Add your PDF

Drop in the document to protect.

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Design the mark

Your text, one centre mark or a tiled pattern, angle, colour, size and transparency.

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Download

The watermark is drawn on every page and becomes part of the file.

WHY CHOOSE US

Why Use Our Watermark PDF Tool?

Fast, reliable, and completely private in-browser document processing.

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Tiled or Single

A subtle all-over pattern for protection, or one clear diagonal stamp for status.

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Transparency Control

Slide from barely-there to unmistakable.

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Really On the Page

The mark is drawn into every page, so it prints and travels with the file.

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Private by Design

Your document is stamped locally; never uploaded.

FREQUENTLY ASKED QUESTIONS

Common Questions About Watermark PDF

It is drawn onto each page’s content, which makes casual removal hard — but no watermark is proof against a determined editor. Keep your unwatermarked original safe.
Centre shows one large mark in the middle of each page; tiled repeats the text across the whole page — better for discouraging screenshots and leaks.
For status stamps (DRAFT, CONFIDENTIAL), 25–40% visibility reads clearly without hiding content. For protection tiling, lower is subtler.
Any short text in Latin characters — a word like CONFIDENTIAL or your company name works best.
No — everything happens in your browser.
EXPLORE MORE

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Ready to try it?

No sign-up, no installation — just open the tool and get started in seconds.

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