Watermark PDF
Add a text or image watermark to your PDF file. Customize transparency, position, and typography. 100% Secure Processing entirely in your browser.
Back to ToolsDrag & Drop PDF here
or click to browse your files
Analyzing PDF Pages...
Document Preview
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.
-
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.
-
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.
-
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.
Why Professionals Choose AdreTools
Text & Image Stamps
Add a text watermark (like 'CONFIDENTIAL') or upload a logo image to brand your documents.
Full Customization
Adjust opacity, rotation angle, font size, and exact positioning to get the perfect watermark look.
Batch Application
Apply your custom watermark across hundreds of pages in an instant using local browser power.
Who is this tool for?
Our suite is designed to streamline workflows for professionals across all industries. Here is how this tool is used in the real world.
Creative Agencies
Stamp a semi-transparent logo across design portfolios to prevent unauthorized copying.
Legal Departments
Stamp 'DRAFT' or 'CONFIDENTIAL' diagonally across all pages of a sensitive pre-merger contract.
Photographers
Apply a copyright watermark image to the corner of PDF lookbooks sent to potential clients.
Frequently Asked Questions
Smart Workspace
Files are stored securely in your browser's local memory. No uploads.
Drag & Drop Files here
or click to select multiple files