How to add a watermark to a PDF
- Drop the PDF you want to watermark.
- Type the text and adjust opacity, colour, size and angle.
- Click “Add watermark” and download the stamped PDF.
Frequently asked questions
Can the watermark be removed?
It is drawn into the page content, so it cannot be switched off in a viewer. A determined person with editing software can still remove it; watermarks deter, they do not lock.
Which characters are supported?
Latin letters, digits and common accented characters. Non-Latin scripts are not supported by the built-in PDF font.
Is my document uploaded?
No. The watermark is added in your browser; the file stays on your device.