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PDF Tools
Overlay custom text or image watermarks onto PDF pages. Customize position, opacity, font size, and rotation.
Follow these simple steps to get instant, accurate results directly in your browser:
Select the PDF file that requires watermarking.
Type your watermark text, adjust transparency, font size, color, and tilt angle.
Click 'Apply Watermark' and download your protected PDF document.
The Add PDF Watermark tool allows you to overlay custom text stamps (such as 'CONFIDENTIAL', 'DRAFT', 'COPY', or custom company names) onto every page of your PDF document.
Using pdf-lib canvas operations, the tool injects vector text layers across page content streams. You can configure opacity, rotation angle (e.g. 45° diagonal), font size, color, and layer placement (over or under existing text).
Because document processing is performed on your computer, proprietary contracts, intellectual property, and internal drafts are protected without cloud server exposure.
Set transparency from subtle 10% to bold 100%, and rotate freely from -90° to +90°.
Watermarks remain sharp and clear at any zoom level without pixelation.
Applies consistently across all pages in a single automated pass.
Processes confidential documents securely in local browser memory.
Stamp 'DRAFT' or 'INTERNAL ONLY' across preliminary proposal iterations.
Watermark proprietary eBooks, research reports, and creative portfolios with your brand.
Overlay 'CONFIDENTIAL' or 'ATTORNEY-CLIENT PRIVILEGED' onto legal discoveries.
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