Support: Add Watermark to PDF

Tell us what happened. Include which page you were on and what you expected to see. Most answers go out within a business day.

Common questions

Is my PDF uploaded?

No. The watermark is added by your browser on your own device. The PDF, and any logo you use, are never sent to our server or anyone else's.

How do I add a CONFIDENTIAL watermark to a PDF?

Keep Text selected, type CONFIDENTIAL, leave the angle on Diagonal and the position in the centre, and choose Add watermark. Lower the opacity if you still want the page easy to read.

Can I use my logo as a watermark?

Yes. Choose Image and pick a PNG or JPG. A PNG with a transparent background looks best, because only the logo shows, not a white box around it.

What does behind the page content mean?

The watermark is placed under the text and pictures instead of on top, so the text stays crisp and fully readable. Scanned pages and pages with a solid coloured background cover everything underneath, so on those the watermark will be hidden. Leave the option off for scans.

Can someone remove the watermark?

A watermark added this way is part of each page's content, so it survives printing, emailing and copying. Anyone with PDF editing software can still try to edit it out, which is true of every PDF watermark. For documents that must not be changed, send them as a flattened image or a protected PDF as well.

Does it work with Hindi or other languages?

Yes. English and most European text is added as sharp vector text. Text in other scripts, such as Hindi, Arabic or Chinese, is drawn with your device's fonts and placed as a high-resolution image, so it still shows correctly.

Can I watermark a password-protected PDF?

Not until the password protection is removed. The tool will tell you if the file is protected.

Is it free?

Yes, completely free, with no sign-up, no watermark of our own and no limit on pages.

Nothing happens when I pick a file

The tool runs entirely in your browser, so a very old browser can fail silently. Try the current Chrome, Edge, Firefox or Safari. Your files are never uploaded anywhere.