Can I customize the watermark appearance?

Yes. You can set the watermark text, font size, opacity, and rotation angle. The watermark is applied to every page of the PDF.

Can the watermark be removed later?

The watermark is embedded directly into the PDF pages. It cannot be easily removed, making it suitable for marking confidential or draft documents.

Are my files uploaded to a server?

No. The watermark is applied entirely in your browser using pdf-lib. Your PDF never leaves your device.

Does adding a watermark increase the file size?

Only slightly. The watermark adds a small text overlay to each page. The increase is typically a few kilobytes regardless of the number of pages.

Can I add a watermark to a specific page only?

Currently the watermark is applied to every page in the PDF. To watermark specific pages, split the PDF first, watermark the pages you want, then merge them back together.

Add Watermark to PDF Online: Free, No Upload Required

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How it works

Upload your PDF

Drop your file and a preview appears showing the first page.

Customize your watermark

Set the text, opacity level, and font size. A live preview shows how it will look.

Download watermarked PDF

Click Add Watermark and download your PDF with the watermark on every page.

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Watermark PDF