Add Watermark to PDF

Stamp an image or text over your PDF in seconds.100% Secure: Processed locally.

Upload a PDF to watermark

Click here or drag and drop a file

How to Add a Watermark to a PDF

Protecting your intellectual property or classifying a document's status (such as "DRAFT" or "CONFIDENTIAL") is incredibly important. Our Watermark PDF tool allows you to stamp text across every page of your document instantly, without the need to install expensive desktop software.

Customization Features

  • Text & Color: Type any phrase you want and use the color picker to make your watermark stand out (or blend in).
  • Dynamic Opacity: Use the transparency slider to ensure your watermark doesn't completely block the readability of the underlying text.
  • Perfect Diagonal Placement: Our internal math engine calculates the center of every single page and stamps the text at a perfect 45-degree angle.

100% Private File Stamping

When dealing with sensitive or confidential documents, the last thing you want to do is upload them to a random server on the internet. CrispyTools processes the PDF document inside your web browser. Your file is read locally, stamped locally, and downloaded locally.