Add a Watermark to a PDF
Repeated text placed diagonally on every page, with the size, angle, and opacity of your choice.
Add a Watermark to a PDF is a free tool that runs entirely in your browser, with no data ever sent to a server. Place a repeated text on every page, with the size, angle, and opacity of your choice.
What it's for
Mark a draft, a confidential document, or a review copy before sharing it. The text is drawn on every page of the document, diagonally by default.
What this tool does not do
This tool does not support password-protected PDFs and only applies a text watermark, no image or logo.
Frequently asked questions
Can the watermark be easily removed?
No: it's part of each page's content, like any text in the document. It's not an overlaid image you can detach with one click.
Can I choose the text color?
Yes, with a standard color picker. The adjustable opacity keeps the original content readable underneath.
Are my files sent to a server?
No: processing happens entirely in your browser, on your device. No file is ever transmitted to a server, at any point.