UnlimitedConvert
Watermark PDF
Stamp text such as CONFIDENTIAL, DRAFT or your company name across every page.
Files stay on your device
No limits
No sign-up
No watermark
Your files are processed in this browser tab and never uploaded.
How to use Watermark PDF
Add your file
Add your PDF.
Pick the options
Type the watermark, pick colour, opacity and angle.
Download
Press Add watermark and download.
About Watermark PDF
The watermark is drawn on top of every page with transparency, so the content underneath stays readable. Standard PDF fonts are used, so only basic Latin characters are supported.
Frequently asked questions
Are my files uploaded?
No. Everything happens in your browser on your own device. Your files are never sent to a server, so they stay private.
Can the watermark be removed?
A determined person with PDF editing software could remove it. For stronger protection, combine it with Compress PDF, which turns pages into images.