Add Watermark to PDF — Free & Private
Stamp an image or text over your PDF in seconds. Choose typography, transparency, and position. 100% offline — your files never leave your device.
Drag & Drop Your PDF Here
or click to browse your files
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How to Add a Watermark in 3 Simple Steps
Upload PDF
Drag and drop your PDF file into the upload area, or click to browse and select a file from your device.
Configure Settings
\nConfigure your text or image watermark. Adjust the opacity, rotation, and position on the grid.
Apply & Download
\nClick the Add Watermark button. Your stamped document is saved as a new PDF and downloaded instantly to your device.
Why Use MyPDF to Add Watermarks?
Unlike other online PDF watermark tools that upload your sensitive documents to remote servers, MyPDF's split tool processes everything locally in your web browser. Your contracts, invoices, reports, and personal documents never leave your device. This makes it the safest option for stamping confidential or private documents.
Whether you need to stamp "CONFIDENTIAL" across a report, add your company logo to invoices, or protect your intellectual property, MyPDF handles it instantly with no file size limits and no watermarks. It works on any device — Windows, Mac, Linux, Chromebook, tablet, or phone.
Need more PDF tools? Try our PDF merge tool, PDF signing tool, or PDF compressor.
Frequently Asked Questions About PDF Watermarks
Is it safe to watermark PDFs online?
Yes, with MyPDF it is completely safe. Unlike other online tools, your files are processed entirely in your browser using JavaScript. Nothing is uploaded to any server. Your documents stay on your device at all times.
Can I use an image as a watermark?
Yes. You can toggle between Text and Image modes. In Image mode, you can upload a JPG or PNG file (like a company logo) to stamp onto your document.
Will the watermark reduce PDF quality?
No. MyPDF stamps the vector text or image directly onto the existing document layer without re-rendering or compressing the original pages, preserving 100% quality.
Does this work on mobile devices?
Yes. The split tool works on any device with a modern browser — iPhones, Android phones, iPads, tablets, and desktop computers. No app installation required.
Is there a file size or page limit?
No artificial limits. Since processing happens in your browser, the only limitation is your device's available memory. PDFs with hundreds of pages work without issues on most devices.
