Watermark PDF

Add Watermark to PDF

Stamp custom text watermarks on your PDF pages. Adjust position, size, color, and opacity. Free and private.

Drop your PDF here

or click to browse (max 50MB)

Why Use PDFKit Watermark Tool?

Custom Text

Add any text as watermark — company name, 'CONFIDENTIAL', 'DRAFT', or custom.

Full Customization

Control font size, color, opacity, and rotation for the perfect watermark.

Multiple Positions

Place watermarks at center, diagonal, corners, or any position you need.

All Pages at Once

Watermark is applied to every page of your PDF automatically.

100% Private

Your files are processed entirely in your browser. Nothing is uploaded.

Instant Processing

No waiting, no queues. Watermarks are added instantly, even for large files.

Frequently Asked Questions

Is this watermark tool really free?

Yes, completely free with no limits on file size (up to 50MB) or number of pages. No signup required.

Can I customize the watermark appearance?

Absolutely! You can change the text, font size (12-120px), color, opacity (5-100%), rotation angle, and position (center, diagonal, corners).

Are my files uploaded to a server?

No. All processing happens locally in your browser using JavaScript. Your files never leave your device.

Can I remove a watermark after adding it?

The watermark is permanently embedded in the output PDF. Keep your original file if you might want the unwatermarked version.

Does it work with scanned PDFs?

Yes, the watermark is drawn on top of existing page content, so it works with any PDF regardless of how it was created.