Add Watermark to PDF

Stamp custom text like DRAFT or CONFIDENTIAL diagonally across every page of your PDF. Free and private — processed in your browser.

Your files never leave your device. Free, no sign-up, no watermark.

Add a watermark to PDF online — free

Stamp custom text like DRAFT, CONFIDENTIAL, or your brand name diagonally across every page of your PDF with our free online watermark tool. Protect and label your documents in seconds.

The watermark is applied on your device and your file is never uploaded, so your content stays private. It's a simple way to mark ownership, status, or confidentiality on any PDF.

Popular uses

• Mark documents as DRAFT or CONFIDENTIAL
• Add a company or copyright watermark
• Label samples and proofs
• Deter unauthorized copying or sharing

Also known as: PDF watermark online free, stamp PDF, confidential PDF, text watermark PDF, add draft to PDF.