IslandPDF IslandPDF

Watermark PDF

Add a text watermark to every page of your PDF. A watermark is a simple way to mark a document's status or origin before it's shared further — it can show ownership or help avoid confusion when several versions of a file are circulating. Free to use, no sign-up required.
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Click or drop your file here
.pdf

How it works

1

Upload

Drop your PDF file
2

Customize

Text, size, color, opacity, rotation
3

Download

Get your watermarked PDF

Features

All pages

the watermark is automatically applied to the whole document.

Fully customizable

choose the text, color, size, opacity, rotation and position.

Secure

processed securely, with automatic deletion after processing.

Common use cases

Marking a document as "Draft" or "Confidential" before sharing
Adding your company name across a proposal or quote
Protecting preview copies shared with clients from unauthorized reuse
Labeling internal-use, sample, or copyright-protected copies

Your files are handled securely

Uploaded documents are removed automatically after the watermark is created.

Frequently asked questions

Does the watermark apply to all pages?

Yes, the same watermark is automatically applied to every page of the document.

Can I use an image as a watermark?

This tool adds a text watermark. For an image or logo, use the "Edit a PDF" tool.

Is the watermark permanent?

It is embedded into the page content; to remove it you would need to start over from the original PDF.

Do I need to install anything?

No, it works directly in your browser.

Is it free?

Yes, with no account required.

Can I add a watermark on mobile?

Yes, the tool works on mobile browsers.

Can I change the watermark transparency?

Yes, an opacity slider lets you adjust how visible the watermark is.

Can I place the watermark diagonally?

Yes, rotation is adjustable from 0° to 360° — a diagonal angle is even the default.

Does a watermark reduce PDF quality?

No, the watermark is added as an overlay — the original page content isn't re-encoded or compressed.