Add Confidential Watermark to PDF
Overview
One-click 'CONFIDENTIAL' overlay across every page — useful for legal review packages and pre-publication drafts.
How to Use This Tool
Upload PDF(s), configure the watermark or signature, preview, download.
Ready to get started? It's free, no registration required, and your files never leave your device.
Add Watermark →Frequently Asked Questions
Is the watermark permanent?
Yes. The watermark is rendered into the PDF as an image overlay — recipients can't easily strip it.
Can the watermark be transparent?
Yes. Opacity is configurable from 10% to 100%. 30% is a common semi-transparent default.
Does it work on all pages or selected pages?
Both. Apply to every page, the first/last only, or a specific page range.