Watermark PDF

Stamps a text or logo watermark across every page, with control over size, opacity and tiling.

No upload — runs on your device
Free, no sign-up
No watermark

What Watermark PDF does

Stamps a text or logo watermark across every page, with control over size, opacity and tiling. A watermark stamped across every page helps mark a document as a draft, confidential, or property of a specific owner. Both text and uploaded logo image watermarks are supported, with control over size and opacity, plus an optional tiled repeat pattern that's harder to remove than a single centered stamp.

Works well with: Protect PDF · Compress PDF · Page Numbers

Runs 100% in your browser

PDFHook processes this file using JavaScript on your own device. It's never uploaded, stored, or seen by anyone else — and it works even if your connection drops mid-way.

HOW TO USE IT

Watermark PDF in 3 steps

Upload your PDF

Any PDF you want to brand or protect works.

Add text or a logo

Type a watermark message, or upload your own logo image.

Download the watermarked PDF

Applied to every page, with the size and opacity you chose.

Key features

Use text or upload your own logo image
Control size and opacity
Optional tiled repeat across the page
Supports both plain text and uploaded logo image watermarks
Optional tiled repeat pattern across the page

Practical use cases

A business wants to mark a document as "Draft" or "Confidential" before sharing it internally.
A photographer or designer wants to add a logo watermark to a PDF portfolio before sending a preview.
Someone sharing sensitive material wants a watermark that's difficult to simply crop out.

Related terminology

Watermark opacity: How transparent or solid a watermark appears over the underlying page content — lower opacity blends more subtly with the document.

Frequently asked questions

Can I use my own logo as the watermark?

Yes — switch to “Logo image” and upload a PNG or JPG. A PNG with a transparent background usually looks best.

What does the tile option do?

It repeats the watermark text diagonally across the entire page, making it harder to crop out than a single stamp.

Can I control where the watermark is placed?

Yes — position, size, and opacity are all adjustable, whether using a single placement or the tiled repeat option.

Does the watermark apply to every page automatically?

Yes — the same watermark settings are applied consistently across every page of the document.

Can I add a text watermark and a logo watermark to the same PDF?

You can add either a text watermark or a logo image watermark per pass — run the tool twice on the same file if you want both applied together.

Is this PDF watermark tool free to use?

Yes — this PDF watermark tool is free with no limit; add text watermark to PDF or stamp PDF online with an add logo watermark PDF option, and the result is watermark PDF free with no cost or sign-up.