100% Zero-Upload WebAssembly Engine
Add Confidential Watermark to NDA Documents
Prevent unauthorized sharing of your sensitive Non-Disclosure Agreements. Stamp a bold 'CONFIDENTIAL' watermark across every page before distribution.
Drop PDF for Watermark
Securely stamp documents with confidence inside your browser.
Processed Locally - 100% PrivatePrivate Stamping
Your unreleased intellectual property is never uploaded while applying the watermark.
Customizable Opacity
Adjust the transparency so the watermark is clearly visible without obscuring the contract text.
Batch Ready
Apply the watermark to every single page of a 50-page contract in milliseconds.
Frequently Asked Questions
Related Questions
Can the watermark be easily removed?
Our tool embeds the watermark deeply into the PDF structure, making it difficult for average users to remove compared to simple overlay tools.