Watermark PDF
Add a text or image watermark to your PDF file. Customize transparency, position, and typography. 100% Secure Processing entirely in your browser.
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Watermark Settings
How to Add a Watermark to PDF?
Protect your intellectual property by stamping text or image watermarks onto your documents. Follow these simple steps to batch watermark PDF files securely in your browser.
1. Upload your PDF
Drag and drop your document into the secure drop zone. We use local browser processing, meaning your confidential files are never uploaded to our servers.
2. Choose Type
Select either "Place text" to type words like CONFIDENTIAL or DRAFT, or select "Place image" to upload your company logo or custom stamp.
3. Customize Settings
Adjust the transparency, rotate the watermark, select specific pages, and choose the perfect position (e.g., Top-Right) or use the Mosaic effect.
4. Add Watermark
Click the final button. Our engine will instantly stamp your document and generate a new, secure PDF ready for download.
The Most Advanced Online PDF Watermarker
Adding a watermark to a PDF is the best way to prevent unauthorized distribution and establish document ownership. We offer tools used by professionals worldwide.
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Text or Image Watermarks
Type text directly or upload a high-resolution logo (PNG, JPG). Our engine scales and applies it cleanly to every page you select.
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Layer Ordering (Z-Index)
Choose whether your watermark sits Over the PDF content like a strong stamp, or Below the PDF content as a subtle background.
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Mosaic Effect
Need maximum protection? Enable the Mosaic feature to repeat your text or logo continuously across the entire document page.
100% Privacy - Zero Server Uploads
Most online PDF tools upload your sensitive documents to a remote server. We don't. 🛡️
Our modern Watermark PDF tool utilizes cutting-edge WebAssembly technology (`pdf-lib`) to process everything inside your own browser's memory. Whether you are stamping legal contracts or confidential business proposals, your data never leaves your device. This makes our tool the fastest and most secure PDF watermarker available today.