Add Watermark to PDF Online
Stamp "CONFIDENTIAL", "DRAFT", or any text across every page. Choose angle, opacity, size, and color — all without your file ever leaving your browser.
100% Private
Files are processed entirely in your browser. Nothing is uploaded to any server.
Lightning Fast
No upload or download wait times. Processing happens instantly on your device.
Works Everywhere
Use on any device with a modern browser. No software installation needed.
How to Watermark a PDF
Upload
Drop or select the PDF you want to protect or label.
Style it
Type your text, then pick diagonal or horizontal placement, opacity, size, and gray or red.
Download
Click "Add Watermark" — the text is stamped on every page of your PDF.
Frequently Asked Questions
Does the watermark appear on every page?▼
Yes. The watermark is stamped in the center of every page of the document with the same text, angle, opacity, and color, so a "DRAFT" or "CONFIDENTIAL" label can't be missed on any page.
Will the watermark cover up my document's text?▼
Not if you use a sensible opacity. The default 30% opacity makes the watermark clearly visible while the content underneath stays readable. Use the live preview to fine-tune opacity and font size before downloading.
Can the watermark be removed later?▼
The watermark becomes part of the page content of the downloaded copy, so casual viewers can't toggle it off. Like any PDF watermark, though, it isn't cryptographic protection — someone with editing software and effort could remove it. Keep your un-watermarked original as the master copy.
Can I watermark many PDFs at once?▼
Yes — Pro users can drop multiple PDFs at once and apply the same watermark to all of them in a single batch, downloaded together as a ZIP. Free users can watermark files one at a time.