Add Watermark to PDF Free Online
Add text or image watermarks to your PDF documents. Customize the position, size, rotation, and opacity. Apply to all pages or specific ones. No upload — processed locally.
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100% Local • Max: 100MB • Instant
How to Watermark PDF Files Online
Step 1: Upload Files
Click the upload button or drag and drop your files into the tool.
Step 2: Adjust Settings
Configure your options or arrange files if needed.
Step 3: Click Watermark & Download
Click the process button and download your processed file instantly.
Frequently Asked Questions
Q. How to add a watermark to a PDF?
Upload your PDF, type your watermark text (e.g., 'CONFIDENTIAL', 'DRAFT') or upload an image, adjust position and opacity, then download the watermarked PDF.
Q. Can I use an image as a watermark?
Yes! Upload a logo, stamp, or any image as a watermark. You can adjust its size, opacity, and position on the page.
Q. Will the watermark appear on every page?
Yes, by default the watermark is applied to all pages. You can also choose to watermark only specific pages.
Q. Does it work on mobile phones?
Yes! OnlinePDFPro works perfectly on all devices - Android phones, iPhones, tablets, laptops and desktops. No app download needed.
Q. Is there a file size limit?
Since processing happens in your browser, there's no server-side file size limit. You can process files as large as your device can handle.