Add a watermark to a PDF

How to Add a watermark to a PDF

1

Add your PDF

Click “Select file” or drag and drop a PDF. The page count appears once the file loads.

2

Design your watermark

Type your watermark text (or upload an image). Choose the font, size, color, opacity, and rotation. Position it where you want it on the page.

3

Apply and download

Click “Apply Watermark”. The watermark is added to every page (or your selected range) and the file saves to your Downloads.

Every step runs in your browser. No server uploads, no waiting.

Why use this tool

DukPdf’s Add Watermark tool stamps a text or image watermark on every page of a PDF — in your browser. Adjust opacity, size, position, and rotation. Apply to all pages or a specific range. All watermarking runs locally — your file never leaves your device. To add a custom header or footer with a page count, use Add Page Numbers. For a step-by-step guide, see our watermark guide.

When you'd use this

Mark a draft as confidential

Stamp “CONFIDENTIAL” or “DRAFT” across every page of a document before sharing it internally or externally.

Add a company logo

Place your company logo as a faint watermark on proposals, reports, and contracts to brand every page.

Watermark an ebook

Add a copyright notice or author name as a watermark on every page of a published ebook or PDF document.

Mark documents as approved

Stamp “APPROVED”, “PAID”, or “RECEIVED” across every page of an invoice, receipt, or form for clear status at a glance.

Why this matters for your privacy

☁️ CLOUD PDF TOOLS
📄 your-file.pdf
↓ uploaded over the internet
☁️ their server

A copy of your document sits on someone else’s infrastructure — deleted on their schedule, not yours.

✗ OUT OF YOUR HANDS
DukPdf
📄 your-file.pdf
⟳ stays right where it is
💻 your device

Processed by your own browser, start to finish — on your machine, under your control.

✓ STAYS ON YOUR DEVICE

We send the software to your file — not your file to our servers.

Add Watermark — questions

Can I use an image as a watermark?

Yes. Upload any PNG, JPG, or SVG image as the watermark. The image is tiled or placed at your chosen position on every page.

Can I adjust the watermark opacity?

Yes. The opacity slider goes from 10% (barely visible) to 100% (fully opaque). A faint watermark (20-30%) is typical for branding or confidentiality marks.

Is the file uploaded during watermarking?

No. Watermarking runs entirely in your browser. Open DevTools → Network tab — zero upload requests.

Can I watermark only some pages?

Yes. Enter specific page numbers or ranges in the page selector to watermark only those pages. Other pages are left untouched.

Can I remove a watermark later?

No. Once the watermark is added and the file is saved, it is part of the page content. Keep a copy of the original if you might want to remove it later.

Will the watermark be visible when printing?

Yes. The watermark is flattened into the PDF as a visual element. It appears on screen, in print, and in copies of the document.

Tools that pair with add watermark

🔒 DukPdf — YOUR FILES NEVER LEAVE YOUR DEVICE

Ready to add a watermark to a pdf? Your files stay yours.

No server uploads. No watermark. Just open a tool, drop your files, and download the result. Your original files are never modified.

↑ Back to upload