Add Watermark to PDF
Stamp your PDFs with a custom text watermark. Set the watermark text, opacity, angle and font size - all processed right in your browser.
Upload the PDF you want to watermark
Drag and drop a PDF file here, or click to select a file
How to add a text watermark
Why process locally?
- Watermarking runs locally in your browser - your PDF file is never uploaded to a server
- Customize the watermark text, opacity, rotation angle, font size and color
- Works directly on desktop and mobile browsers - no PDF software to install
PDF watermark FAQ
Does adding a watermark modify my original PDF?
No. Your local original is never modified. A brand-new watermarked PDF is generated for download while the original stays safely on your device.
Can I create a semi-transparent watermark effect?
Yes. Set a custom opacity to create a subtle anti-leak text watermark that blends naturally into the page.