Add Custom Watermarks to PDF
Stamp a custom text watermark across every page of your PDF document. Protect your intellectual property or label drafts as 'CONFIDENTIAL'.
Secure Corporate Documentation
When sending a draft of a manuscript to a publisher, or a confidential financial report to an investor, it is crucial to protect the asset. This tool allows you to stamp large, semi-transparent text diagonally across every single page of your PDF. This prevents unauthorized sharing and clearly marks the document's status (e.g., 'DRAFT', 'DO NOT COPY').
Why Use Our PDF Watermark Adder?
- Mass Application: Stamps every page of a 100-page document instantly.
- Adjustable Opacity: Ensures the watermark doesn't make the underlying text unreadable.
- Diagonal Placement: Classic corner-to-corner stamping for maximum security.
- Total Privacy: Watermark highly sensitive corporate paperwork entirely offline.
How to Use the PDF Watermark Adder
Upload your PDF document.
Type your desired Watermark Text (e.g., 'CONFIDENTIAL').
Adjust the font size, color (usually grey or red), and opacity.
Click 'Apply Watermark' and download the protected file.
Frequently Asked Questions
If they have a premium PDF editor, they might be able to select and delete the text layer. For maximum, irreversible security, you should 'Flatten' the PDF after adding the watermark.
Currently, this tool generates scalable vector text watermarks to ensure perfect resolution and zero file bloat across massive documents.
All file processing is performed locally in your web browser. We do not upload, store, or view your data.