Watermark PDF in your browser
Mark documents as DRAFT, CONFIDENTIAL, COPY, or with your own label before you send them out. Change the text, size, transparency, angle, color, position, and pages, and see the result right away. It all runs in your browser.
- Set your own text, size, color, transparency, and angle.
- Place it in the center or a corner, on every page or just some.
- Long text is scaled down automatically to fit each page.
- Drafts stay on your device. Nothing is uploaded.
How to use Watermark PDF
- Choose your PDF and type your watermark text, like DRAFT or CONFIDENTIAL.
- Adjust opacity, size, angle, color, position, and pages.
- Click Add watermark and download the marked PDF.
Technical notes & limits
- Watermark text uses the standard Helvetica font, so only Latin characters are supported.
- A visible watermark doesn’t encrypt the file or stop a determined person from editing it.
Fits every page, stays readable
Real-world PDFs often have odd page boundaries or rotated pages. The watermark is positioned based on what you actually see on each page, and it’s semi-transparent, so the text underneath stays easy to read.
A watermark is not a lock
A watermark tells readers a document is a draft or not for sharing, but it doesn’t stop anyone opening or editing the file. If you also want a password, run the watermarked copy through Protect PDF.
Frequently asked questions
Can I apply a watermark to only certain pages of my PDF?
Yes. Type the pages or ranges (like 1, 3-5) in the Pages box, or leave it empty to mark every page.
How do I make sure the watermark does not block the text underneath?
Keep opacity between 15% and 30%. The mark stays clearly visible and the text underneath is still easy to read.
Why are only Latin characters supported in watermark text?
The tool uses Helvetica, a font every PDF reader already has. That keeps files small, since no extra font files need to be embedded.