Add a Watermark to a PDF
Stamp a diagonal text watermark across every page, like CONFIDENTIAL or DRAFT. Pick the text, size, color, opacity, and angle. Nothing is uploaded, it all happens on your device.
Click to choose a PDF file, or drag and drop it here
Stays on your device, nothing is uploaded.
A rough approximation on a standard page, the real result depends on your PDF's actual page size.
How it works
The watermark is drawn as real text directly onto each page, centered, rotated, and made semi-transparent, entirely in your browser. It becomes part of the page itself, so keep a copy of the original if you might need an unwatermarked version later.
Are my PDF files uploaded anywhere?
No. The watermark is added entirely inside your browser using JavaScript. Your files never leave your device or touch a server.
Can I change the watermark's angle and transparency?
Yes. Set the rotation angle in degrees and the opacity as a percentage, 0% is invisible, 100% is fully solid.
Does the watermark go on every page?
Yes, the same watermark is stamped on every page of the document.
Can I remove a watermark this tool added?
Not with this tool, the watermark becomes part of the page content. Keep a copy of your original file if you might need it without the watermark later.
Can I watermark a password-protected PDF?
Not currently. Password-protected or encrypted PDFs can't be read by the tool and will show an error, remove the password first with a PDF reader.