PDF Watermark
Free • No signup • Runs in your browser
Stamp custom text watermarks across all PDF pages with color and opacity.
100% Private
Files are processed locally in your browser and never uploaded to a server.
Instant Results
No queues, no waiting — get your output the moment you click.
No Signup
Free to use with no account, no email, and no watermarks.
Works Everywhere
Runs on any modern device — desktop, tablet, or mobile.
What is PDF Watermark?
PDF Watermark is a free, browser-based pdf tool that stamp custom text watermarks across all pdf pages with color and opacity. It supports PDF file formats. Everything runs in your browser, so your files are processed on your device, not on our servers.
How it works
Upload your PDF document by dragging and dropping or browsing your files.
Adjust the available settings to your preference and preview changes in real time.
Click the process button to run the tool.
Download or copy your result instantly — no waiting, no email required.
Perfect for
- Stamp custom text watermarks across all PDF pages with color and opacity
- Merging or splitting PDF documents for sharing
- Reducing PDF file sizes for email attachments
- Adding watermarks or page numbers to documents
Why use it
- 100% browser-based — your files are processed on your device
- Free, with no signup or account required
- Instant results with no processing queues
- Works on any device — desktop, tablet, or mobile
- Supports PDF formats
- No watermarks on your output
Frequently asked questions
Is PDF Watermark free?
Yes, PDF Watermark is free to use, with no hidden fees.
Is PDF Watermark safe to use?
Yes. PDF Watermark runs in your browser, so your PDFs are processed on your device, not on our servers.
Do I need to install anything to use PDF Watermark?
No. PDF Watermark is a web-based tool that works in any modern browser — Chrome, Firefox, Safari, or Edge. Just open the page and start using it.
What file formats does PDF Watermark support?
PDF Watermark supports PDF format.
How does PDF Watermark work?
PDF Watermark is a pdf tool that stamp custom text watermarks across all pdf pages with color and opacity. Add your PDF, adjust the available settings, and get your result right away, all processed in your browser.
Does PDF Watermark work on mobile?
Yes. PDF Watermark is fully responsive and works on desktops, tablets, and mobile phones. The interface adapts to your screen size automatically.
Are there any limits when using PDF Watermark?
PDF Watermark has no daily usage caps and adds no watermarks. Because it runs on your device, very large files depend on your device's memory.
Ready to use PDF Watermark?
Free, instant, and runs entirely in your browser. No download, no signup, no limits.
Takes less than 10 seconds