Add Watermark to PDF — Free Online
Stamp any text across your PDF pages to mark ownership or status.
PDF Watermark
Use this tool directly in your browser — no signup required.
Use PDF Watermark100% private — files are processed locally and never uploaded.
How to Add Watermark to PDF
- 1
Upload your PDF
Drop in the document you want to watermark.
- 2
Set your watermark text
Type your watermark — company name, 'CONFIDENTIAL', 'SAMPLE', or anything you need. Adjust opacity and position.
- 3
Apply to all pages
The watermark stamps across every page. Download the watermarked PDF.
Why Watermark Your Documents
Watermarks serve two purposes: deterring unauthorized use and communicating document status. A company name watermark makes it obvious where the document originated. A 'DRAFT' watermark prevents someone from treating a preliminary version as final.
Opacity matters. Too strong and the watermark obscures content. Too faint and it's pointless. The default 30% opacity is the sweet spot for most documents — clearly visible without making text hard to read. You can adjust from 10% (barely there) to 90% (dominant).
The watermark is rendered as a translucent text layer over the existing content. It can't be removed by simply selecting and deleting text — it's embedded into the page rendering. For true security, combine watermarking with PDF permission restrictions.
Frequently Asked Questions
Can someone remove the watermark?
Not easily. The watermark is rendered into the page content, not as a separate removable layer. Determined users with professional tools could potentially redact it, but casual removal isn't possible.
Can I use an image as a watermark instead of text?
Currently the tool supports text watermarks only. For logo watermarks, you'd need a desktop PDF editor like Adobe Acrobat.
Will the watermark appear when printing?
Yes. The watermark is part of the page content, so it prints exactly as it appears on screen.