Watermark a PDF
This tool stamps a text of your choice diagonally across every page of the PDF, for example CONFIDENTIAL or DRAFT. It only accepts text: you cannot upload an image or a logo, and the style (angle, colour and opacity) is fixed. If the document already carries a watermark, this tool adds the new one on top and does not remove the existing one.
Does it remove an existing watermark?
No. This tool only adds a new watermark; it does not detect or erase any watermark already on the PDF. If what you need is to take out a watermark that is already there, this is not the right tool: you would need to work with the file at its source or use another tool built specifically for removal.
Add a watermark in four steps.
From the original file to the watermarked PDF, without leaving the browser.
Choose the PDF
Upload the document you want to mark. It stays on your computer.
Write the text
For example, CONFIDENTIAL, DRAFT, or your company name.
Apply
The text is stamped diagonally across every page at once.
Download
Get the watermarked PDF, ready to share.
Can I use a long sentence as the watermark text?
You can, but the result gets worse. The font shrinks as the text grows, down to a minimum of 24 points; past that point it stops shrinking and the watermark can spill past the page width. Short text, one or a few words, always gives the best result.
What happens if I leave the text field empty?
The tool automatically uses the word "CONFIDENTIAL" as the watermark text; you cannot apply a watermark with no text at all. If you want a different word or phrase, type it in the field before applying, because there is no way to change it after the file downloads.
Questions about watermarking a PDF.
Can I use a logo or an image instead of text?
No. This tool only accepts text. A watermark with a logo would need a different tool.
Can I change the colour, angle or opacity of the text?
No, those are fixed: light grey, about 28% opacity, always diagonal. Only the text itself is yours to choose.
Does the watermark appear on every page?
Yes, on every page of the document, with no exceptions and no way to choose only some.
Is it free?
No. This tool is part of the Premium subscription, EUR 1.99 a month, which removes the limits on every tool and adds OCR. Sign PDF opens on the free plan, with one signature a day.
A PDF to mark?
Mark it now.
Open the tool and try it. Nothing to install, nothing sent outside your computer.
Open Watermark