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Add Watermark to PDF

Stamp your PDF with custom text watermarks. Adjust font size, color, opacity, and angle. Runs entirely in your browser — no upload needed.

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Drop your PDF here
or click below · 100% local processing · No watermark on watermarks 😄
💧 Watermark Settings
Live Preview
CONFIDENTIAL
#ff0000
FAQ

Common Questions

Is my PDF uploaded to a server? +
No. All watermarking is done using pdf-lib, running entirely in your browser. Your file never leaves your device.
Can I remove the watermark after adding it? +
The watermark is embedded directly into the PDF. While it can technically be removed with advanced tools, it provides a strong visual deterrent. For best protection, use a low opacity that's still clearly visible.
Can I add an image watermark? +
Currently, this tool supports text watermarks. You can customize the text, font size, color, opacity, and angle to create a unique stamp.
Will the watermark affect the original PDF content? +
The watermark is layered on top of existing content without modifying the original text or images. The original PDF quality is fully preserved.

How to Add a Watermark to a PDF Online

Adding a watermark to your PDF with PDFSnip takes seconds. Upload your PDF, type your watermark text, customize the font size, color, opacity, and angle, then download your watermarked PDF. The watermark is applied to every page.

Why Add a Watermark to a PDF?

Businesses add Confidential or Internal Use Only stamps to sensitive documents. Photographers watermark previews to protect their work before payment. Law firms stamp Draft on documents under review. Watermarks signal that a document is not final or not authorized for redistribution.

Frequently Asked Questions

Can I control the opacity?

Yes. Adjust opacity from very faint (10%) to fully visible (100%) depending on how prominent you want the watermark.

Is it free?

Yes, completely free. No account needed, no limits.