Watermark PDF
Why use Watermark PDF?
Overlay a text watermark (e.g. CONFIDENTIAL or DRAFT) across every page, with adjustable size, angle, and opacity.
What you get
- Works on Mac, Windows, Linux, and mobile
- Your files stay private — processed on your device
- Free with no watermarks or sign-up
Watermark PDF — Quick & Easy
Zero training
So simple you won't need to read or learn anything — just open a file and go.
Private by design
Your file is processed on your device and never uploaded to a server.
Switch tools freely
Jump between merge, split, edit, convert, and more from one place.
Always free
No limits, no watermarks, and no account required — ever.
Works everywhere
Runs in any modern browser on Mac, Windows, Linux, and mobile.
Open formats
Standard PDF in, standard PDF (or JPG/ZIP) out — nothing proprietary.
How to Watermark PDF
- 1Drop your file into the box above, or click to choose it.
- 2Adjust the options for your task.
- 3Run the tool — it processes instantly in your browser.
- 4Download your new file. That's it!
FAQs
Is Watermark PDF free?
Yes — every tool here is completely free, with no limits, watermarks, or account required.
Are my files uploaded to a server?
No. This tool runs entirely in your browser, so your files never leave your device.
Do I need to install anything?
No installation and no sign-up. It works in any modern browser on desktop or mobile.