Add a watermark to a PDF
Stamp “Draft”, “Confidential”, your company name or your logo across PDF pages. Adjust size, angle and transparency with a live preview, then download.
or drop a file here
One PDF, up to 250 MB.
Processed on your device. Nothing is uploaded.
How to add a watermark to a PDF
Open your PDF
The first page appears as a live preview.
Create the watermark
Type your text or choose an image such as a logo, then set font, size and colour.
Position it
Centre it, tile it across the page, or tuck it into a corner. Set the angle and opacity.
Apply and save
Choose which pages to stamp and download the watermarked PDF.
Key features
Text or logo
Use any short text, or a PNG with a transparent background for a clean logo watermark.
Live preview
See the watermark on your actual page as you change settings, before anything is written to the file.
Tiled pattern
Repeat the watermark across the whole page, which makes it much harder to crop out of a screenshot.
Works on rotated pages
Pages that are stored sideways still get an upright, correctly placed watermark.
How effective is a watermark?
A watermark is a deterrent and a label, not a lock. It tells readers a document is a draft or confidential and discourages casual copying. Someone determined, with PDF editing software, can remove an added watermark. To make removal harder, you can flatten the PDF afterwards, or protect it with a password using Protect PDF.
The standard PDF fonts cover Western European languages. If your text uses other characters, such as Polish, Greek or Japanese letters, it is added as a high-resolution image so it still displays correctly.
Security and privacy
Add Watermark runs entirely in your browser. Your file is processed in this tab’s memory and never uploaded to PDF365 or anyone else. When you close the tab or press “Start over”, the data is discarded.
Read more in our privacy policy.
Questions about Add Watermark
Can I put the watermark behind the text?
Yes. Tick “Place behind page content”. It works well on text documents. Scanned pages are a single image, so a watermark behind them would be hidden; leave the option unticked for scans.
Can I use my logo?
Yes. Choose Image and select a PNG, JPG or WebP file. PNG logos with transparent backgrounds give the cleanest result.
Can I watermark only some pages?
Yes. Type the pages in the “Apply to pages” box, for example 2- to skip the cover page.
Does it change the original file?
No. You download a new, watermarked copy. Your original stays exactly as it was.