PDF PremWatermark PDF – Add Text Watermark Online Free
Stamp a diagonal text watermark — CONFIDENTIAL, DRAFT, your name or your brand — across every page of your PDF. Choose the text, colour and transparency, and download the watermarked file in seconds. Free, private and processed entirely in your browser.
Drag & drop your PDF here or browse files
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The watermark appears diagonally in the centre of every page, behind nothing and over the content — like a stamp. Your PDF never leaves your device.
How to add a watermark to a PDF
- Upload your PDF — drag and drop it or click the upload area.
- Type your watermark text and adjust the transparency and colour.
- Click Add Watermark and download the stamped PDF.
Frequently asked questions
How do I add a watermark to a PDF for free?
Upload your PDF, type your text (for example CONFIDENTIAL), set the transparency, click Add Watermark and download. It is free, needs no sign-up and the tool adds no watermark of its own.
Where does the watermark appear?
Diagonally across the centre of every page — the classic stamp style used for drafts, confidential files and sample documents.
Can I control how dark the watermark is?
Yes. The transparency slider runs from 10% (very light) to 60% (strong). Around 25-30% is readable without hiding the text underneath.
Is my PDF uploaded to a server?
No. The watermark is stamped inside your browser — your file never leaves your device.
Can a watermark be removed later?
The watermark is drawn into each page, so it cannot be removed in a normal PDF viewer. Keep a copy of your original file if you may need a clean version.
What text should I use?
Common choices: CONFIDENTIAL, DRAFT, SAMPLE, DO NOT COPY, your company name, or your website — up to 40 characters.