Add a watermark to a PDF on Mac
Stamp DRAFT, CONFIDENTIAL or your own text across every page.
Three steps. That's it.
- 1
Drop your files
Drag files onto Watermark PDF, choose them with Choose Files, or right-click them in Finder.
- 2
Choose the options
Set what you need in the options panel, such as text. Your choices are remembered for next time.
- 3
Get the result
The result lands in a new dated folder in Downloads › OneMacTools. Your originals are never changed.
What Watermark PDF does
Add a large, semi-transparent watermark across every page, diagonally or straight, at the size and opacity you choose.
Options
Great for
- Mark a draft as DRAFT
- Stamp CONFIDENTIAL on a report
- Brand a sample document
Questions about Watermark PDF
Does Watermark PDF upload my files?
No. Watermark PDF runs entirely on your Mac, so your files never leave it and it works offline.
Will Watermark PDF change my original files?
No. Results are saved as new files in a dated folder in Downloads › OneMacTools, and your originals are left exactly as they were unless you turn on an option that says otherwise.
What does Watermark PDF need?
Just a Mac with macOS 26 or later. There's nothing else to install.
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Watermark PDF, plus 88 more.
One app. One price.
All 89 tools for $29, once. 14-day money-back guarantee.