Watermark PDF Online – Free, Private, No Upload
This free PDF watermark tool lets you add text or image watermarks to any PDF — control color, opacity, size, rotation, font, and position. Everything runs in your browser, so your files never leave your device and no account is required.
What Is a PDF Watermark Tool?
A PDF watermark tool adds a visible stamp — either text such as "CONFIDENTIAL" or a logo image — onto the pages of a PDF. It is commonly used to mark documents as drafts, protect copyrighted material, brand reports, or simply to prevent unauthorized reuse of a file before it is shared.
How to Use This PDF Watermark Tool?
Drop your PDF into the upload area, then switch between the Text and Image tabs to choose your watermark type. Adjust color, opacity, size, rotation, font, and position using the sliders, and watch the live preview update. When it looks right, click Download Watermarked PDF.
Why Use Our PDF Watermark Tool?
Our tool is completely free, requires no signup, and processes everything locally in your browser — your PDF never leaves your device. Unlike cloud-based watermark tools, it gives you real-time preview, full control over position and rotation, and both text and image watermarks without any file-size limit or watermark on your watermark.
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Frequently Asked Questions
Is this PDF watermark tool free?
Yes, it is completely free to use with no hidden charges, no page limits, and no watermark added to your output by us.
Does it work offline?
Once the page and its libraries have loaded, the tool works entirely in your browser without sending your files anywhere. An internet connection is needed for the initial page load.
Is my data safe?
Absolutely. All PDF processing happens locally on your device. Your file is never uploaded to any server and is discarded when you refresh or leave the page.
Do I need to create an account?
No account or signup is required. Just open the page, upload your PDF, set your watermark, and download.