100% Client-side

Add Watermark to PDF

Stamp any text on every page of your PDF. Customize font, color, opacity, and angle. Runs in your browser.

or drop PDF here

Any size works

0 KB uploaded. Your file never leaves this browser tab.

Open your browser's Network tab while you use this tool, you will see zero data sent to any server.

IYONM

Cloud tools

Your files

Stay on your device

Uploaded to a server

File size limit

None

Capped on free plans

Works offline

Yes

Signup

Never

Pushed for limits

How to use

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1. Upload PDF

Select the PDF to watermark.

✏️

2. Customize

Enter your text and adjust size, color, and angle.

💾

3. Download

Save your watermarked PDF.

What text can I use as a watermark?

Any text, CONFIDENTIAL, DRAFT, your name, or any custom string.

Can I control the watermark appearance?

Yes. Adjust font size, color, opacity (transparency), and rotation angle.

Are files uploaded?

No. Watermarking runs in your browser with pdf-lib.

Can I remove a watermark later?

Watermarks added this way are embedded in the page content. They cannot be easily removed.