Marking a document as "DRAFT," "CONFIDENTIAL," or "SAMPLE" before sharing it is a one-step job with Watermark PDF: type the text, choose how it looks, and it's stamped diagonally across every page.
How to watermark pdf
- 1
Upload your PDF file
Drag it onto the upload area, or click to choose it from your device.
- 2
Select Watermark
Choose the tool, then type the text you want stamped.
- 3
Adjust size, angle, and opacity
Tune how the watermark looks before applying it.
- 4
Download your watermarked PDF
Every page now carries the stamp.
Why use RealPDFTool for watermark pdf
Custom text, not a fixed template
Stamp exactly the wording you need — draft labels, confidentiality notices, or anything else.
Your files never leave your browser
Watermarking runs locally, so your document is never uploaded.
Frequently asked questions about watermark pdf
Can I control the watermark's opacity?
Yes, adjust opacity, size, and angle so it's visible but doesn't obscure the underlying content.
Can I remove a watermark I added later?
Keep your original, unwatermarked file — a watermark baked into a downloaded PDF can't be cleanly removed afterward.
Is there a page limit?
It runs entirely in your browser, so it's bounded by your device's memory rather than a server-side limit.
Are my files uploaded anywhere?
No — watermarking happens locally, so your document is never uploaded.