Watermark PDF
Add a text or logo watermark to a PDF in your browser. Set the size, angle and transparency with a live preview. Free, no uploads.
Runs in your browser. Files never leave your device
About Watermark PDF
Mark a document as "Confidential", "Draft" or "Copy", or stamp your logo on every page. Choose the size, angle and transparency, show the watermark once or repeat it across the page, and check the result in the live preview.
The watermark is added in your browser, so the document stays on your device. Text in any language works, including Arabic, Chinese and Hindi.
How to use Watermark PDF
- 1Add a PDF file.
- 2Type the watermark text, or choose an image such as your logo.
- 3Adjust the size, angle and transparency, then click Add watermark and download the PDF.
Frequently asked questions
Is my PDF uploaded?
No. The watermark is added on your device, in your browser. Neither the PDF nor your logo leaves your computer or phone.
Can I use my logo?
Yes. Choose Image and pick a PNG, JPG, WebP or GIF. PNG logos with a transparent background look best.
Can the watermark be removed?
A watermark makes copying obvious, but anyone with a PDF editor can remove it. Repeating it across the page makes that much harder. To control who can open the file, also protect it with a password.
Does it work with text in other languages?
Yes. Latin text is added as sharp vector text. Other scripts, like Arabic, Chinese or Hindi, are drawn as a high-resolution image so they always display correctly.
Will the watermark cover my content?
It's drawn on top of each page, so use a low opacity (20–40%) to keep the text underneath readable.