Add Watermark to PDF
Stamp text watermarks like CONFIDENTIAL or your brand name on PDF pages with custom size, color and opacity.
Private by design: your files are processed inside your browser and are never uploaded to our server.
About Add Watermark to PDF
Stamp CONFIDENTIAL, DRAFT, SAMPLE or your company name across PDF pages. Choose diagonal, horizontal or tiled layout, size, colour and transparency.
How to use Add Watermark to PDF
- Step 1Select your file(s) or drag and drop them into the box.
- Step 2Choose the Add Watermark to PDF settings you want.
- Step 3Click the button and download your result.
Questions & answers
Can I add a Hindi watermark?
Yes. Hindi and other scripts are supported and drawn with your device fonts.
Is Add Watermark to PDF free?
Yes. Every tool on this site is free to use, with no signup, no watermark and no daily limit.
Are my files uploaded to a server?
No. Your files are processed inside your own browser on your device. They are never uploaded, so nobody else can see them.
Is there a file size limit?
There is no fixed limit. Because processing happens on your device, very large files depend on your phone or computer memory. Most files up to a few hundred MB work fine.
Does it work with password-protected PDFs?
Yes. If a PDF needs a password to open, the tool asks for it and then works normally. The password never leaves your browser.
Does it work on mobile?
Yes. It works in Chrome, Safari, Edge and Firefox on Android, iPhone, Windows and Mac.