Add a text or picture watermark such as CONFIDENTIAL or DRAFT to the pages of a PDF. Free and private.
Choose a PDF to watermark
Drag and drop a file here, or click the button. PDF files up to 80 MB.
Your file stays on your device. The watermark is added in your browser and nothing is uploaded.
NinjaFunction's PDF Watermark adds a text or picture watermark to your PDF in the browser. Type text such as CONFIDENTIAL or DRAFT, or add a PNG or JPG logo, then choose the position (centre, repeated, top or bottom), size, colour, strength, turn and the pages to mark. Rotated pages are handled. Your file is never uploaded.
| Position | Look | Good for |
|---|---|---|
| Centre | One large mark across the middle | DRAFT, CONFIDENTIAL, SAMPLE |
| Repeated | A pattern of small marks over the page | Copies you share, so nothing can be cropped out |
| Top | A small line at the top edge | A company name or document label |
| Bottom | A small line at the bottom edge | A copyright note or a web address |
No. The watermark is added inside your browser, so your file stays on your device and nothing is sent or stored.
Yes. Add a PNG or JPG. A PNG with a transparent background looks best. You can use a picture, text, or both together.
The watermark is drawn on the page itself, so it cannot be switched off like a layer. Someone with PDF editing software may still be able to cover or remove it, so it is a deterrent and a label, not a lock.
Yes. Type the pages, such as 1-3, 5, 8-end. Leave the box empty to mark every page.
Yes. The strength slider goes from 5 to 100 percent. About 20 to 30 percent keeps the page easy to read.
The watermark uses a standard PDF font that covers Western European letters. Other alphabets cannot be drawn and are replaced, and the tool tells you which ones.
Yes. The watermark follows the way the page is shown, so it stays upright and in the right place.
The PDF can be up to 80 MB. A password protected PDF must be unlocked first.
